N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On – 2020-2023 Buick Cadillac Chevrolet & GMC

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F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Copyright 2022 General Motors. All Rights Reserved. Page 1 of 6 Release Date: December 2022 Revision: 00 Attention: It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by this notification under a sale or lease until the defect or noncompliance is remedied. This is a phased launch. Software is currently available for the model year 2021 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500 New, Suburban, and Tahoe, and GMC Sierra 1500 New, Yukon, and Yukon XL. These vehicles were placed in “Open” status in IVH on December 8, 2022. Software is currently NOT available for the 2020 model year Cadillac CT4 and CT5 vehicles. These vehicles were placed in “Incomplete – Remedy Not Available” status in IVH on December 8, 2022 and are on stop delivery until software is available and the repairs in this bulletin are performed. We anticipate software availability for the 2020 model year Cadillac CT4 and CT5 vehicles in the near future and will revise this bulletin when software becomes available. All involved vehicles that are in dealer inventory must be held and not delivered to customers, dealer traded, or used for demonstration purposes until the repair contained in this bulletin has been performed on the vehicle. Involved vehicles will be repaired either through dealer repairs as described in this bulletin or through over the air (OTA) programming. Dealers can and should perform the procedure in this bulletin on any vehicle with an “Open” status on the Investigate Vehicle History (IVH) screen in GM Global Warranty Management system. Due to the fact that vehicles will be closed in IVH through successful OTA programming, dealers should always check the status in IVH before performing any vehicle repairs. Make Model Model Year RPO Description From To Cadillac CT4 2020 2023 Cadillac CT5 2020 2023 Buick Envision 2021 2023 Cadillac Escalade 2022 2023 Cadillac Escalade ESV 2022 2023 Chevrolet Silverado 1500 New 2022 2023 Chevrolet Suburban 2022 2023 Chevrolet Tahoe 2022 2023 GMC Sierra 1500 New 2022 2023 GMC Yukon 2022 2023 GMC Yukon XL 2022 2023 Certain involved vehicles are marked “Open” on the Investigate Vehicle History screen in GM Global Warranty Management system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections and/or repairs. 2020 model year Cadillac CT4 and CT5 vehicles were placed in “Incomplete – Remedy Not Available” status on the Investigate Vehicle History screen in GM Global Warranty Management system on December 8, 2022. Condition General Motors has decided that certain 2020 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500 New, Suburban, and Tahoe, and GMC Sierra 1500 New, Yukon, and Yukon XL vehicles, fail to conform, in part, to Federal/Canada Motor Vehicle Safety Standard (F/CMVSS) No. 108, “Lamps, reflective devices, and associated equipment.” The daytime running lamps (DRLs) may not deactivate when the headlamps are on. If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. Correction General Motors will update the software in the vehicles’ Body Control Module (BCM) to correct the condition. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 2 of 6 vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates. Parts No parts are required for this repair. Warranty Information Labor Operation Description Labor Time Trans. Type Net Item 9106364* Verified Module Software or Calibration Level: Module Is Programmed with Same Level Software or Calibration 0.2 ZFAT N/A 9106365* Body Control Module Reprogramming with SPS Sierra, Silverado CT4**, CT5**, Envision, Escalade, Suburban, Tahoe, Yukon 0.3 0.5 **Do NOT perform this procedure on 2020 model year Cadillac CT4 or CT5 vehicles until the software is available. Important: * To avoid warranty transaction rejections, carefully read and follow the instructions below: 6125814 • The Warranty Claim Code from the programming event must be accurately entered in the “Warranty Claim Code” field of the transaction. • When more than one Warranty Claim Code is generated for a programming event, it is required to document all Warranty Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the “Warranty Claim Code field of the transaction, otherwise the transaction will reject. It is best practice to enter the FINAL code provided by SPS2. Warranty Claim Code Information Retrieval F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 3 of 6 6125774 If the Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS2 system as follows: 1. Open TLC on the computer used to program the vehicle. 2. Select and start SPS2. 3. Select Settings (1). 4. Select the Warranty Claim Code tab (2). The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events. If the code is retrievable, dealers should resubmit the transaction making sure to include the code in the SPS Warranty Claim Code field. Service Procedure Do NOT perform this procedure on 2020 model year Cadillac CT4 or CT5 vehicles until the software is available. Note: Carefully read and follow the instructions below. • Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or control module damage may occur. • Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer to www.gmdesolutions.com for further information. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. • Follow the on-screen prompts regarding ignition power mode, but ensure that anything that drains excessive power (exterior lights, HVAC blower motor, etc) is off. • Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO. Important: The service technician always needs to verify that the VIN displayed in the TLC left side drop down menu and the top center window match the VIN plate of the vehicle to be programmed prior to using Service Programming System 2 (SPS2) for programming or reprogramming a module. • For the TLC application, service technicians need to always ensure that the power mode (ignition) is “ON” before reading the VIN from the vehicle’s VIN master module and that they do not select a VIN that is already in the TLC application memory from a previous vehicle. • If the VIN that shows up in the TLC top center window after correctly reading the VIN from the vehicle does not match the VIN plate of the vehicle, manually type in the VIN characters from the vehicle VIN plate into the TLC top center window and use these for programming or reprogramming the subject module with the correct vehicle VIN and software and/or calibrations. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 4 of 6 • The Engine Control Module (ECM) is the master module (for VIP vehicles) that TLC reads to determine the VIN of the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the ECM also needs to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate. • The Body Control Module (BCM) is the master module (for GEM vehicles) that TLC reads to determine the VIN of the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the BCM also needs to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate. Caution: Be sure the VIN selected in the drop down menu (1) is the same as the vehicle connected (2) before beginning programming. 5743643 Important: If the vehicle VIN DOES NOT match, the message below will be shown. 5877000 5644477 Important: Techline Connect screens shown above. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 5 of 6 Important: If the same calibration/software warning is noted on the TLC Summary screen, select OK and follow screen instructions. After a successful programming event, the WCC is located in the Service Programming System dialogue box of the SPS Summary screen. No further action is required. Refer to the Warranty section of the bulletin. Do NOT perform this procedure on 2020 model year Cadillac CT4 or CT5 vehicles until the software is available. 1. Reprogram the Body Control Module. Refer to K9 Body Control Module: Programming and Setup in SI. 5644478 Note: The screenshot above is an example of module programming and may not be indicative of the specific module that is being programmed. Module selection and VIN information have been blacked out. Important: To avoid warranty transaction rejections, you MUST record the warranty claim code provided on the Warranty Claim Code (WCC) screen shown above on the job card. Refer to callout 1 above for the location of the WCC on the screen. 2. Record SPS Warranty Claim Code on job card for warranty transaction submission. Dealer Responsibility – For USA & Export (USA States, Territories, and Possessions) It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by this notification under a sale or lease until the defect or noncompliance is remedied. The US National Traffic and Motor Vehicle Safety Act provides that each vehicle that is subject to a recall of this type must be adequately repaired within a reasonable time after the customer has tendered it for repair. A failure to repair within sixty days after tender of a vehicle is prima facie evidence of failure to repair within a reasonable time. If the condition is not adequately repaired within a reasonable time, the customer may be entitled to an identical or reasonably equivalent vehicle at no charge or to a refund of the purchase price less a reasonable allowance for depreciation. To avoid having to provide these burdensome remedies, every effort must be made to promptly schedule an appointment with each customer and to repair their vehicle as soon as possible. In the recall notification letters, customers are told how to contact the US National Highway Traffic Safety Administration if the recall is not completed within a reasonable time. Dealer Responsibility – All All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers’ possession and subject to this recall must be held and inspected/repaired per the service procedure of this bulletin before customers take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealer-traded, released to auction, used for demonstration, or any other purpose. All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System (CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified for sale within the CPOIS system, or once again be used in the CTP program. Dealers are to service all vehicles subject to this recall at no charge to customers, regardless of mileage, age of vehicle, or ownership, from this time forward. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 6 of 6 Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer information indicated on the dealer listing, are to be contacted by the dealer. Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. Recall follow-up cards should not be used for this purpose, since the customer may not as yet have received the notification letter. In summary, whenever a vehicle subject to this field action enters your vehicle inventory you must take the steps necessary to ensure the program correction has been made before selling the vehicle. In addition, for vehicles entering your facility for service, you are required to ensure the customer is aware of the open field action and make every reasonable effort to implement the program correction as set forth in this bulletin prior to releasing the vehicle. Dealer Reports – For USA & Export For dealers with involved vehicles, a listing has been prepared and will be available through GM GlobalConnect Maxis Field Action Reports or sent directly to export dealers. The Inventory tab of the dealer reports will contain VINs that apply to this recall. This information is intended to assist dealers with the PROMPT COMPLETION of these vehicles. The Customer In-Service tab will contain customer names and addresses from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this recall may be a violation of law in several states. Courtesy Transportation – For USA & Canada Courtesy transportation is available for customers whose vehicles are involved in a product program and still within the warranty coverage period. See General Motors Service Policies and Procedures Manual for courtesy transportation program details. Customer Notification USA & Canada – General Motors will notify customers of this recall on their vehicle. Export – Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor Vehicle Safety Act. GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the tools, equipment, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your dealer for information on whether your vehicle may benefit from the information. We Support Voluntary Technician Certification

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Reference Number: GCUS-17-475 Claim Reject Issue Involving Field Action N222386380 SPS Programming Events Updated Date: Dec 09, 2022 13:45 CT Attention GM Warranty Administrators It has come to our attention that select warranty claims for completing the SPS programming event for Field Action N222386380 are rejecting. We are currently investigating this issue and determining an appropriate solution. In the interim, if you encounter a reject and you have validated that the VIN and SPS Code are correct, please route the transaction to the Warranty Support Center with a screenshot of the SPS code. The screenshot can be taken from the point of reprogramming, or from the history log. The WSC will prioritize any incoming claims for immediate payment. Thank you for your patience in this matter.

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GLOBAL SAFETY FIELD INVESTIGATIONS DCS6356 URGENT – DISTRIBUTE IMMEDIATELY Date: December 8, 2022 Subject: N222386380 – Noncompliance Recall Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Models: 2020 – 2023 Cadillac CT4 2020 – 2023 Cadillac CT5 2021 – 2023 Buick Envision 2022 – 2023 Cadillac Escalade, Escalade ESV 2022 – 2023 Chevrolet Silverado 1500 New 2022 – 2023 Chevrolet Suburban 2022 – 2023 Chevrolet Tahoe 2022 – 2023 GMC Sierra 1500 New 2022 – 2023 GMC Yukon, Yukon XL To: All General Motors Dealers General Motors is releasing Noncompliance Recall N222386380 today. The total number of U.S. vehicles involved is approximately 729,187. Please see the attached bulletin for details. This is a phased launch. Software is now available for 2021 – 2023 Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500 New, Suburban, and Tahoe, and GMC Sierra 1500 New, Yukon, and Yukon XL vehicles. Once the service procedure contained in this bulletin has been performed on the vehicle, the vehicle is released from stop delivery and the vehicle can be delivered to the customer. Software is NOT currently available for 2020 model year Cadillac CT4 and CT5, but when software is available, this bulletin will be revised. Effective immediately, stop the delivery of certain 2020 Cadillac CT4 and CT5 vehicles in used vehicle inventory. These vehicles, fail to conform, in part, to Federal/Canada Motor Vehicle Safety Standard (F/CMVSS) No. 108, “Lamps, reflective devices, and associated equipment.” The daytime running lamps (DRLs) may not deactivate when the headlamps are on. If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. Until further instructions are received, involved vehicles that are in dealers’ possession (new or used vehicle inventory, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc.) must be held and not delivered to customers, dealer-traded, released to auction, used for demonstration purposes or any other dealer use. All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System (CPOIS) will be de-certified. Involved vehicles will be repaired either through dealer repairs as described in this bulletin or through over the air (OTA) programming. Dealers can and should perform the procedure in this bulletin on any vehicle with an “open” status on the Investigate Vehicle History (IVH) screen in GM Global Warranty Management system. Due to the fact that vehicles will be closed in IVH through successful OTA programming, dealers should always check the status in IVH before performing any vehicle repairs. Question and Answer Document (Q&A) Attached to this message you will find a document that addresses the ten most likely questions customers may have regarding this Noncompliance Recall. Please use this information as an aid to confidently answer customer concerns. Global Warranty Management (GWM) The Required Field Action section on the Investigate Vehicle History (IVH) screen will be updated December 8, 2022. A list of vehicles in dealer inventory is attached to this message. Please hold all warranty transactions until IVH has been updated. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS

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Reference Number: GCUS-17-475 RESOLVED: Reject Issue Involving Field Action N222386380 SPS Programming Events Updated Date: Dec 12, 2022 07:55 CT Attention GM Warranty Administrators The issue impacting a percentage of warranty claims for completing the SPS programming event for Field Action N222386380 has been resolved. The majority of transactions that were in reject status have automatically been reprocessed and paid. Please refer to today’s Transaction Summary Report to validate payment. If your transaction has not yet paid and there are no other errors that require GM Authorization (H-routing), please resubmit your transaction. If other errors are involved, or if your transaction rejects again, please H-route the transaction with a screen-print of the SPS code. We apologize for any inconvenience this has caused.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-903 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : General Motors, LLC Submission Date : DEC 08, 2022 NHTSA Recall No. : 22V-903 Manufacturer Recall No. : N222386380 Manufacturer Information : Manufacturer Name : General Motors, LLC Address : 29427 Louis Chevrolet Road MAIL CODE 480-210-2V WARREN MI 48093 Company phone : 586-596-1733 Population : Number of potentially involved : 740,108 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2023 Cadillac CT4 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. There are 24,697 Cadillac CT4 vehicles involved in this recall. Production Dates : SEP 11, 2019 – DEC 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2020-2023 Cadillac CT5 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. There are 43,510 Cadillac CT5 vehicles involved in this recall. Production Dates : MAY 29, 2019 – DEC 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2021-2023 Buick Envision Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 85,950 Buick Envision vehicles involved in this recall. Production Dates : JUL 20, 2020 – DEC 06, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2022-2023 Cadillac Escalade Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 26,783 Cadillac Escalade vehicles involved in this recall. Production Dates : JUN 22, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2022-2023 Cadillac Escalade ESV Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 17,269 Cadillac Escalade ESV vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 6 : 2022-2023 Chevrolet Silverado 1500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for lowbeams and daytime running lights and are not affected by this recall. There are 170,248 Chevrolet Silverado 1500 vehicles involved in this recall. Production Dates : OCT 18, 2021 – NOV 25, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 7 : 2022-2023 Chevrolet Suburban Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for low-beams and daytime running lights and are not affected by this recall. There are 57,503 Chevrolet Suburban vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2022-2023 Chevrolet Tahoe Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for low-beams and daytime running lights and are not affected by this recall. There are 104,806 Chevrolet Tahoe vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 9 : 2022-2023 GMC Sierra 1500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 115,885 GMC Sierra 1500 vehicles involved in this recall. Production Dates : NOV 09, 2021 – NOV 22, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 10 : 2022-2023 GMC Yukon Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 54,089 GMC Yukon vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 11 : 2022-2023 GMC Yukon XL Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 39,368 GMC Yukon XL vehicles involved in this recall. Production Dates : JUN 23, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : General Motors has decided that certain 2020 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehicles, fail to conform, in part, to S7.10.5 of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, “Lamps, reflective devices, and associated equipment.” The daytime running lamps (DRLs) may not deactivate when the headlamps are on, as required by S7.10.5, Table I-a. of FMVSS 108. FMVSS 1 : 108 – Lamps, reflective devices, and assoc. Equipment FMVSS 2 : NR Description of the Safety Risk : If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. Description of the Cause : The body control module (BCM) software in these vehicles, under a combination of certain pre-conditions, may fail to deactivate the DRLs when the headlamps are on. Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13534824 ,13534861, 13534887, 13535060, 13535063, 13536377, 13537291, 13538873, 13539315, 13540164 Component Name 2 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13540488, 13540793, 13541803, 13541809, 13542153, 13546036, 13546973, 13546976, 13547770, 13548773 Component Name 3 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13534822, 13534885, 13535062, 13536375, 13537290, 13540487, 13540792, 13541806, 13541807, 13542151 Part 573 Safety Recall Report 22V-903 Page 6 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 4 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13542224, 13546033, 13546034, 13546971, 13546972, 13546974, 13546975, 13547768, 13547769, 13548771 Component Name 5 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13548772 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : A vehicle controls engineer submitted a report to GM’s Speak Up For Safety (SUFS) program on October 6, 2022 to determine whether additional GM vehicles may be affected by a software issue that had been found in certain 2021 model year full-size sport-utility vehicles, resulting in GM recall No. 22V827. The body control module (BCM) software in those vehicles, under a combination of certain pre-conditions, could fail to deactivate the DRLs when the headlamps are on. GM opened an investigation on October 24, 2022. GM’s investigator identified additional models and model years with similar software to vehicles subject to Recall N22V27. Testing demonstrated the condition was present in the subject vehicles, while other vehicles were unaffected due to differences in software and/or hardware. On December 1, 2022, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a recall for potential noncompliance with this standard. Description of Remedy : Description of Remedy Program : General Motors will update the software in the vehicles’ Body Control Module (BCM) to correct the condition. Pursuant to 49 C.F.R. § 573.13(d)(1), all covered vehicles are under warranty, so reimbursement is not offered. Part 573 Safety Recall Report 22V-903 Page 7 The information contained in this report was submitted pursuant to 49 CFR §573 How Remedy Component Differs from Recalled Component : The updated BCM software will correct the condition. Identify How/When Recall Condition was Corrected in Production : Containment efforts were initiated on: 11/16/2022 at GM’s Arlington plant, 11/22/2022 at the Fort Wayne plant, 12/01/2022 at the Lansing plant, 11/25/2022 at the Oshawa plant, 11/08/2022 at the Silao plant, and 11/30/22 at the Dong Yue plant. Recall Schedule : Description of Recall Schedule : Dealers will be notified December 8, 2022. Owner notification is expected to begin on January 23, 2023. Planned Dealer Notification Date : DEC 08, 2022 – DEC 08, 2022 Planned Owner Notification Date : JAN 23, 2023 – JAN 23, 2023 * NR – Not Reported

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F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Copyright 2022 General Motors. All Rights Reserved. Page 1 of 6 Release Date: December 2022 Revision: 01 Revision Description: The warranty section in this bulletin has been revised to update the labor time. Please discard all previous copies of bulletin N222386380. Attention: It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by this notification under a sale or lease until the defect or noncompliance is remedied. This is a phased launch. Software is currently available for the model year 2021 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500 New, Suburban, and Tahoe, and GMC Sierra 1500 New, Yukon, and Yukon XL. These vehicles were placed in “Open” status in IVH on December 8, 2022. Software is currently NOT available for the 2020 model year Cadillac CT4 and CT5 vehicles. These vehicles were placed in “Incomplete – Remedy Not Available” status in IVH on December 8, 2022 and are on stop delivery until software is available and the repairs in this bulletin are performed. We anticipate software availability for the 2020 model year Cadillac CT4 and CT5 vehicles in the near future and will revise this bulletin when software becomes available. All involved vehicles that are in dealer inventory must be held and not delivered to customers, dealer traded, or used for demonstration purposes until the repair contained in this bulletin has been performed on the vehicle. Involved vehicles will be repaired either through dealer repairs as described in this bulletin or through over the air (OTA) programming. Dealers can and should perform the procedure in this bulletin on any vehicle with an “Open” status on the Investigate Vehicle History (IVH) screen in GM Global Warranty Management system. Due to the fact that vehicles will be closed in IVH through successful OTA programming, dealers should always check the status in IVH before performing any vehicle repairs. Make Model Model Year RPO Description From To Cadillac CT4 2020 2023 Cadillac CT5 2020 2023 Buick Envision 2021 2023 Cadillac Escalade 2022 2023 Cadillac Escalade ESV 2022 2023 Chevrolet Silverado 1500 New 2022 2023 Chevrolet Suburban 2022 2023 Chevrolet Tahoe 2022 2023 GMC Sierra 1500 New 2022 2023 GMC Yukon 2022 2023 GMC Yukon XL 2022 2023 Certain involved vehicles are marked “Open” on the Investigate Vehicle History screen in GM Global Warranty Management system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections and/or repairs. 2020 model year Cadillac CT4 and CT5 vehicles were placed in “Incomplete – Remedy Not Available” status on the Investigate Vehicle History screen in GM Global Warranty Management system on December 8, 2022. Condition General Motors has decided that certain 2020 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500 New, Suburban, and Tahoe, and GMC Sierra 1500 New, Yukon, and Yukon XL vehicles, fail to conform, in part, to Federal/Canada Motor Vehicle Safety Standard (F/CMVSS) No. 108, “Lamps, reflective devices, and associated equipment.” The daytime running lamps (DRLs) may not deactivate when the headlamps are on. If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 2 of 6 Correction General Motors will update the software in the vehicles’ Body Control Module (BCM) to correct the condition. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates. Parts No parts are required for this repair. Warranty Information Labor Operation Description Labor Time Trans. Type Net Item 9106364* Verified Module Software or Calibration Level: Module Is Programmed with Same Level Software or Calibration 0.2 ZFAT N/A 9106365* Body Control Module Reprogramming with SPS Sierra, Silverado CT4**, CT5**, Envision, Escalade, Suburban, Tahoe, Yukon 0.5 **Do NOT perform this procedure on 2020 model year Cadillac CT4 or CT5 vehicles until the software is available. Important: * To avoid warranty transaction rejections, carefully read and follow the instructions below: 6125814 • The Warranty Claim Code from the programming event must be accurately entered in the “Warranty Claim Code” field of the transaction. • When more than one Warranty Claim Code is generated for a programming event, it is required to document all Warranty Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the “Warranty Claim Code field of the transaction, otherwise the transaction will reject. It is best practice to enter the FINAL code provided by SPS2. Warranty Claim Code Information Retrieval F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 3 of 6 6125774 If the Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS2 system as follows: 1. Open TLC on the computer used to program the vehicle. 2. Select and start SPS2. 3. Select Settings (1). 4. Select the Warranty Claim Code tab (2). The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events. If the code is retrievable, dealers should resubmit the transaction making sure to include the code in the SPS Warranty Claim Code field. Service Procedure Do NOT perform this procedure on 2020 model year Cadillac CT4 or CT5 vehicles until the software is available. Note: Carefully read and follow the instructions below. • Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or control module damage may occur. • Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer to www.gmdesolutions.com for further information. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. • Follow the on-screen prompts regarding ignition power mode, but ensure that anything that drains excessive power (exterior lights, HVAC blower motor, etc) is off. • Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO. Important: The service technician always needs to verify that the VIN displayed in the TLC left side drop down menu and the top center window match the VIN plate of the vehicle to be programmed prior to using Service Programming System 2 (SPS2) for programming or reprogramming a module. • For the TLC application, service technicians need to always ensure that the power mode (ignition) is “ON” before reading the VIN from the vehicle’s VIN master module and that they do not select a VIN that is already in the TLC application memory from a previous vehicle. • If the VIN that shows up in the TLC top center window after correctly reading the VIN from the vehicle does not match the VIN plate of the vehicle, manually type in the VIN characters from the vehicle VIN plate into the TLC top center window and use these for programming or reprogramming the subject module with the correct vehicle VIN and software and/or calibrations. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 4 of 6 • The Engine Control Module (ECM) is the master module (for VIP vehicles) that TLC reads to determine the VIN of the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the ECM also needs to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate. • The Body Control Module (BCM) is the master module (for GEM vehicles) that TLC reads to determine the VIN of the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the BCM also needs to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate. Caution: Be sure the VIN selected in the drop down menu (1) is the same as the vehicle connected (2) before beginning programming. 5743643 Important: If the vehicle VIN DOES NOT match, the message below will be shown. 5877000 5644477 Important: Techline Connect screens shown above. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 5 of 6 Important: If the same calibration/software warning is noted on the TLC Summary screen, select OK and follow screen instructions. After a successful programming event, the WCC is located in the Service Programming System dialogue box of the SPS Summary screen. No further action is required. Refer to the Warranty section of the bulletin. Do NOT perform this procedure on 2020 model year Cadillac CT4 or CT5 vehicles until the software is available. 1. Reprogram the Body Control Module. Refer to K9 Body Control Module: Programming and Setup in SI. 5644478 Note: The screenshot above is an example of module programming and may not be indicative of the specific module that is being programmed. Module selection and VIN information have been blacked out. Important: To avoid warranty transaction rejections, you MUST record the warranty claim code provided on the Warranty Claim Code (WCC) screen shown above on the job card. Refer to callout 1 above for the location of the WCC on the screen. 2. Record SPS Warranty Claim Code on job card for warranty transaction submission. Dealer Responsibility – For USA & Export (USA States, Territories, and Possessions) It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by this notification under a sale or lease until the defect or noncompliance is remedied. The US National Traffic and Motor Vehicle Safety Act provides that each vehicle that is subject to a recall of this type must be adequately repaired within a reasonable time after the customer has tendered it for repair. A failure to repair within sixty days after tender of a vehicle is prima facie evidence of failure to repair within a reasonable time. If the condition is not adequately repaired within a reasonable time, the customer may be entitled to an identical or reasonably equivalent vehicle at no charge or to a refund of the purchase price less a reasonable allowance for depreciation. To avoid having to provide these burdensome remedies, every effort must be made to promptly schedule an appointment with each customer and to repair their vehicle as soon as possible. In the recall notification letters, customers are told how to contact the US National Highway Traffic Safety Administration if the recall is not completed within a reasonable time. Dealer Responsibility – All All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers’ possession and subject to this recall must be held and inspected/repaired per the service procedure of this bulletin before customers take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealer-traded, released to auction, used for demonstration, or any other purpose. All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System (CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified for sale within the CPOIS system, or once again be used in the CTP program. Dealers are to service all vehicles subject to this recall at no charge to customers, regardless of mileage, age of vehicle, or ownership, from this time forward. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 6 of 6 Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer information indicated on the dealer listing, are to be contacted by the dealer. Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. Recall follow-up cards should not be used for this purpose, since the customer may not as yet have received the notification letter. In summary, whenever a vehicle subject to this field action enters your vehicle inventory you must take the steps necessary to ensure the program correction has been made before selling the vehicle. In addition, for vehicles entering your facility for service, you are required to ensure the customer is aware of the open field action and make every reasonable effort to implement the program correction as set forth in this bulletin prior to releasing the vehicle. Dealer Reports – For USA & Export For dealers with involved vehicles, a listing has been prepared and will be available through GM GlobalConnect Maxis Field Action Reports or sent directly to export dealers. The Inventory tab of the dealer reports will contain VINs that apply to this recall. This information is intended to assist dealers with the PROMPT COMPLETION of these vehicles. The Customer In-Service tab will contain customer names and addresses from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this recall may be a violation of law in several states. Courtesy Transportation – For USA & Canada Courtesy transportation is available for customers whose vehicles are involved in a product program and still within the warranty coverage period. See General Motors Service Policies and Procedures Manual for courtesy transportation program details. Customer Notification USA & Canada – General Motors will notify customers of this recall on their vehicle. Export – Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor Vehicle Safety Act. GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the tools, equipment, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your dealer for information on whether your vehicle may benefit from the information. We Support Voluntary Technician Certification

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GLOBAL SAFETY FIELD INVESTIGATIONS DCS6374 URGENT – DISTRIBUTE IMMEDIATELY Date: December 15, 2022 Subject: REVISION: N222386380-01 Noncompliance Recall Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Revised Warranty Section Models: 2021 – 2023 Buick Envision 2020 – 2023 Cadillac CT4 2020 – 2023 Cadillac CT5 2022 – 2023 Cadillac Escalade, Escalade ESV 2022 – 2023 Chevrolet Silverado 1500 New 2022 – 2023 Chevrolet Suburban 2022 – 2023 Chevrolet Tahoe 2022 – 2023 GMC Sierra 1500 New 2022 – 2023 GMC Yukon, Yukon XL To: All General Motors Dealers The warranty section in this bulletin has been revised to update the labor time. Please discard all previous copies of bulletin N222386380. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-903 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : General Motors, LLC Submission Date : DEC 14, 2022 NHTSA Recall No. : 22V-903 Manufacturer Recall No. : N222386380 Manufacturer Information : Manufacturer Name : General Motors, LLC Address : 29427 Louis Chevrolet Road MAIL CODE 480-210-2V WARREN MI 48093 Company phone : 586-596-1733 Population : Number of potentially involved : 740,108 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2023 Cadillac CT4 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. There are 24,697 Cadillac CT4 vehicles involved in this recall. Production Dates : SEP 11, 2019 – DEC 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2020-2023 Cadillac CT5 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. There are 43,510 Cadillac CT5 vehicles involved in this recall. Production Dates : MAY 29, 2019 – DEC 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2021-2023 Buick Envision Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 85,950 Buick Envision vehicles involved in this recall. Production Dates : JUL 20, 2020 – DEC 06, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2022-2023 Cadillac Escalade Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 26,783 Cadillac Escalade vehicles involved in this recall. Production Dates : JUN 22, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2022-2023 Cadillac Escalade ESV Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 17,269 Cadillac Escalade ESV vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 6 : 2022-2023 Chevrolet Silverado 1500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for lowbeams and daytime running lights and are not affected by this recall. There are 170,248 Chevrolet Silverado 1500 vehicles involved in this recall. Production Dates : OCT 18, 2021 – NOV 25, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 7 : 2022-2023 Chevrolet Suburban Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for low-beams and daytime running lights and are not affected by this recall. There are 57,503 Chevrolet Suburban vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2022-2023 Chevrolet Tahoe Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for low-beams and daytime running lights and are not affected by this recall. There are 104,806 Chevrolet Tahoe vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 9 : 2022-2023 GMC Sierra 1500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 115,885 GMC Sierra 1500 vehicles involved in this recall. Production Dates : NOV 09, 2021 – NOV 22, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 10 : 2022-2023 GMC Yukon Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 54,089 GMC Yukon vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 11 : 2022-2023 GMC Yukon XL Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 39,368 GMC Yukon XL vehicles involved in this recall. Production Dates : JUN 23, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : General Motors has decided that certain 2020 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehicles, fail to conform, in part, to S7.10.5 of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, “Lamps, reflective devices, and associated equipment.” The daytime running lamps (DRLs) may not deactivate when the headlamps are on, as required by S7.10.5, Table I-a. of FMVSS 108. FMVSS 1 : 108 – Lamps, reflective devices, and assoc. Equipment FMVSS 2 : NR Description of the Safety Risk : If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. Description of the Cause : The body control module (BCM) software in these vehicles, under a combination of certain pre-conditions, may fail to deactivate the DRLs when the headlamps are on. Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13534824 ,13534861, 13534887, 13535060, 13535063, 13536377, 13537291, 13538873, 13539315, 13540164 Component Name 2 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13540488, 13540793, 13541803, 13541809, 13542153, 13546036, 13546973, 13546976, 13547770, 13548773 Component Name 3 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13534822, 13534885, 13535062, 13536375, 13537290, 13540487, 13540792, 13541806, 13541807, 13542151 Part 573 Safety Recall Report 22V-903 Page 6 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 4 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13542224, 13546033, 13546034, 13546971, 13546972, 13546974, 13546975, 13547768, 13547769, 13548771 Component Name 5 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13548772 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : A vehicle controls engineer submitted a report to GM’s Speak Up For Safety (SUFS) program on October 6, 2022 to determine whether additional GM vehicles may be affected by a software issue that had been found in certain 2021 model year full-size sport-utility vehicles, resulting in GM recall No. 22V827. The body control module (BCM) software in those vehicles, under a combination of certain pre-conditions, could fail to deactivate the DRLs when the headlamps are on. GM opened an investigation on October 24, 2022. GM’s investigator identified additional models and model years with similar software to vehicles subject to Recall N22V27. Testing demonstrated the condition was present in the subject vehicles, while other vehicles were unaffected due to differences in software and/or hardware. On December 1, 2022, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a recall for potential noncompliance with this standard. Part 573 Safety Recall Report 22V-903 Page 7 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : General Motors will update the software in the vehicles’ Body Control Module (BCM) to correct the condition. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may schedule to have the updates performed at a GM dealer. Pursuant to 49 C.F.R. § 573.13(d)(1), all covered vehicles are under warranty, so reimbursement is not offered. How Remedy Component Differs from Recalled Component : The updated BCM software will correct the condition. Identify How/When Recall Condition was Corrected in Production : Containment efforts were initiated on: 11/16/2022 at GM’s Arlington plant, 11/22/2022 at the Fort Wayne plant, 12/01/2022 at the Lansing plant, 11/25/2022 at the Oshawa plant, 11/08/2022 at the Silao plant, and 11/30/22 at the Dong Yue plant. Recall Schedule : Description of Recall Schedule : Dealers will be notified December 8, 2022. Owner notification is expected to begin on January 23, 2023. Planned Dealer Notification Date : DEC 08, 2022 – DEC 08, 2022 Planned Owner Notification Date : JAN 23, 2023 – JAN 23, 2023 * NR – Not Reported

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F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Copyright 2023 General Motors. All Rights Reserved. Page 1 of 8 Release Date: January 2023 Revision: 02 Revision Description: This bulletin is now available to all makes and models listed in the table below and to include the customer letter. Please discard all previous copies of bulletin N222386380. Attention: It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by this notification under a sale or lease until the defect or noncompliance is remedied. All involved vehicles that are in dealer inventory must be held and not delivered to customers, dealer traded, or used for demonstration purposes until the repair contained in this bulletin has been performed on the vehicle. Involved vehicles will be repaired either through dealer repairs as described in this bulletin or through over the air (OTA) programming. Dealers can and should perform the procedure in this bulletin on any vehicle with an “Open” status on the Investigate Vehicle History (IVH) screen in GM Global Warranty Management system. Due to the fact that vehicles will be closed in IVH through successful OTA programming, dealers should always check the status in IVH before performing any vehicle repairs. Make Model Model Year RPO Description From To Cadillac CT4 2020 2023 Cadillac CT5 2020 2023 Buick Envision 2021 2023 Cadillac Escalade 2022 2023 Cadillac Escalade ESV 2022 2023 Chevrolet Silverado 1500 New 2022 2023 Chevrolet Suburban 2022 2023 Chevrolet Tahoe 2022 2023 GMC Sierra 1500 New 2022 2023 GMC Yukon 2022 2023 GMC Yukon XL 2022 2023 Certain involved vehicles are marked “Open” on the Investigate Vehicle History screen in GM Global Warranty Management system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections and/or repairs. Condition General Motors has decided that certain 2020 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500 New, Suburban, and Tahoe, and GMC Sierra 1500 New, Yukon, and Yukon XL vehicles, fail to conform, in part, to Federal/Canada Motor Vehicle Safety Standard (F/CMVSS) No. 108, “Lamps, reflective devices, and associated equipment.” The daytime running lamps (DRLs) may not deactivate when the headlamps are on. If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. Correction General Motors will update the software in the vehicles’ Body Control Module (BCM) to correct the condition. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates. Parts No parts are required for this repair. Warranty Information Labor Operation Description Labor Time Trans. Type Net Item 9106364* Verified Module Software or Calibration Level: Module Is Programmed with Same Level Software or Calibration 0.2 ZFAT N/A 9106365* Body Control Module Reprogramming with SPS Sierra, Silverado CT4, CT5, Envision, Escalade, Suburban, Tahoe, Yukon 0.5 F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 2 of 8 Important: * To avoid warranty transaction rejections, carefully read and follow the instructions below: 6125814 • The Warranty Claim Code from the programming event must be accurately entered in the “Warranty Claim Code” field of the transaction. • When more than one Warranty Claim Code is generated for a programming event, it is required to document all Warranty Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the “Warranty Claim Code field of the transaction, otherwise the transaction will reject. It is best practice to enter the FINAL code provided by SPS2. Warranty Claim Code Information Retrieval 6125774 If the Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS2 system as follows: 1. Open TLC on the computer used to program the vehicle. 2. Select and start SPS2. 3. Select Settings (1). 4. Select the Warranty Claim Code tab (2). The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events. If the code is retrievable, dealers should resubmit the transaction making sure to include the code in the SPS Warranty Claim Code field. Service Procedure Note: Carefully read and follow the instructions below. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 3 of 8 • Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or control module damage may occur. • Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer to www.gmdesolutions.com for further information. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. • Follow the on-screen prompts regarding ignition power mode, but ensure that anything that drains excessive power (exterior lights, HVAC blower motor, etc) is off. • Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO. Important: The service technician always needs to verify that the VIN displayed in the TLC left side drop down menu and the top center window match the VIN plate of the vehicle to be programmed prior to using Service Programming System 2 (SPS2) for programming or reprogramming a module. • For the TLC application, service technicians need to always ensure that the power mode (ignition) is “ON” before reading the VIN from the vehicle’s VIN master module and that they do not select a VIN that is already in the TLC application memory from a previous vehicle. • If the VIN that shows up in the TLC top center window after correctly reading the VIN from the vehicle does not match the VIN plate of the vehicle, manually type in the VIN characters from the vehicle VIN plate into the TLC top center window and use these for programming or reprogramming the subject module with the correct vehicle VIN and software and/or calibrations. • The Engine Control Module (ECM) is the master module (for VIP vehicles) that TLC reads to determine the VIN of the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the ECM also needs to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate. • The Body Control Module (BCM) is the master module (for GEM vehicles) that TLC reads to determine the VIN of the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the BCM also needs to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate. Caution: Be sure the VIN selected in the drop down menu (1) is the same as the vehicle connected (2) before beginning programming. 5743643 Important: If the vehicle VIN DOES NOT match, the message below will be shown. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 4 of 8 5877000 5644477 Important: Techline Connect screens shown above. Important: If the same calibration/software warning is noted on the TLC Summary screen, select OK and follow screen instructions. After a successful programming event, the WCC is located in the Service Programming System dialogue box of the SPS Summary screen. No further action is required. Refer to the Warranty section of the bulletin. 1. Reprogram the Body Control Module. Refer to K9 Body Control Module: Programming and Setup in SI. 5644478 Note: The screenshot above is an example of module programming and may not be indicative of the specific module that is being programmed. Module selection and VIN information have been blacked out. Important: To avoid warranty transaction rejections, you MUST record the warranty claim code provided on the Warranty Claim Code (WCC) screen shown above on the job card. Refer to callout 1 above for the location of the WCC on the screen. 2. Record SPS Warranty Claim Code on job card for warranty transaction submission. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 5 of 8 Dealer Responsibility – For USA & Export (USA States, Territories, and Possessions) It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by this notification under a sale or lease until the defect or noncompliance is remedied. The US National Traffic and Motor Vehicle Safety Act provides that each vehicle that is subject to a recall of this type must be adequately repaired within a reasonable time after the customer has tendered it for repair. A failure to repair within sixty days after tender of a vehicle is prima facie evidence of failure to repair within a reasonable time. If the condition is not adequately repaired within a reasonable time, the customer may be entitled to an identical or reasonably equivalent vehicle at no charge or to a refund of the purchase price less a reasonable allowance for depreciation. To avoid having to provide these burdensome remedies, every effort must be made to promptly schedule an appointment with each customer and to repair their vehicle as soon as possible. In the recall notification letters, customers are told how to contact the US National Highway Traffic Safety Administration if the recall is not completed within a reasonable time. Dealer Responsibility – All All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers’ possession and subject to this recall must be held and inspected/repaired per the service procedure of this bulletin before customers take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealer-traded, released to auction, used for demonstration, or any other purpose. All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System (CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified for sale within the CPOIS system, or once again be used in the CTP program. Dealers are to service all vehicles subject to this recall at no charge to customers, regardless of mileage, age of vehicle, or ownership, from this time forward. Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer information indicated on the dealer listing, are to be contacted by the dealer. Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. A copy of the customer letter is provided in this bulletin for your use in contacting customers. Recall follow-up cards should not be used for this purpose, since the customer may not as yet have received the notification letter. In summary, whenever a vehicle subject to this field action enters your vehicle inventory you must take the steps necessary to ensure the program correction has been made before selling the vehicle. In addition, for vehicles entering your facility for service, you are required to ensure the customer is aware of the open field action and make every reasonable effort to implement the program correction as set forth in this bulletin prior to releasing the vehicle. Dealer Reports – For USA & Export For dealers with involved vehicles, a listing has been prepared and will be available through GM GlobalConnect Maxis Field Action Reports or sent directly to export dealers. The Inventory tab of the dealer reports will contain VINs that apply to this recall. This information is intended to assist dealers with the PROMPT COMPLETION of these vehicles. The Customer In-Service tab will contain customer names and addresses from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this recall may be a violation of law in several states. Courtesy Transportation – For USA & Canada Courtesy transportation is available for customers whose vehicles are involved in a product program and still within the warranty coverage period. See General Motors Service Policies and Procedures Manual for courtesy transportation program details. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 6 of 8 Customer Notification USA & Canada – General Motors will notify customers of this recall on their vehicle (see copy of customer letter included with this bulletin). Export – Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor Vehicle Safety Act. For owners outside these areas, dealers should notify customers using the attached sample letter. GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the tools, equipment, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your dealer for information on whether your vehicle may benefit from the information. We Support Voluntary Technician Certification F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 7 of 8 IMPORTANT SAFETY RECALL January 2023 This notice applies to your vehicle, VIN: _____________________________________ Dear General Motors Customer: This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. General Motors has decided that certain 2020 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500 New, Suburban, and Tahoe, and GMC Sierra 1500 New, Yukon, and Yukon XL vehicles fail to conform to Federal/Canada Motor Vehicle Safety Standard (F/CMVSS) No. 108. As a result, GM is conducting a recall. We apologize for this inconvenience. However, we are concerned about your safety and continued satisfaction with our products. IMPORTANT • Your vehicle is involved in GM recall N222386380. • A software update is available for your vehicle that can be performed remotely with wireless over-the-air technology. If you’ve already accepted the update, no further action is necessary. If you have not accepted the update, follow the in-vehicle radio prompts or schedule an appointment with your dealer. • This service will be performed for you at no charge. Why is your vehicle being recalled? The daytime running lamps (DRLs) may not deactivate when the headlamps are on. If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. What will we do? General Motors will update the software in the vehicles’ Body Control Module (BCM) to correct the condition. Owners who have accepted the applicable terms and conditions may have already received the update with wireless over-the-air technology and will not have to bring their vehicle to a dealership. GM began prompting owners through the vehicle’s radio screen on December 8, 2022. Any owner having received this update through over the air (OTA) technology will not have to bring their vehicle to a dealership. Alternatively, owners may schedule to have the updates performed at your dealer. What should you do? The software update can be performed remotely using wireless over-the-air technology. If you’ve already accepted the update, no further action is necessary. If you have not accepted the update, you will be notified that the update is available by in-vehicle prompts from the radio display. This software update is a two-step process which consists of downloading the software update to your vehicle, and then installing it. First, you’ll be prompted to accept the software download. In order to successfully accept the download, your vehicle must be parked. After you accept the download, and throughout the downloading process, the vehicle may be driven and operated as normal. Once the download is complete, you’ll be asked to accept the software installation. The vehicle must be parked when you accept the installation. It must remain parked, with the ignition in the OFF position, throughout the installation process. Installation will only take up to 15 minutes, and you do not have to stay in your vehicle while the software is installing. Your vehicle will not be operational during the installation process, and must remain parked while the software is installing to your vehicle. F/CMVSS Noncompliance Recall N222386380 Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Page 8 of 8 Once the software update is complete, please know that you may need to reconfigure certain vehicle settings or preferences, as they may have been altered as a result of the update. Upon your next ignition cycle after the installation completes, your vehicle’s radio will display a confirmation message that the update was successful. If you receive a message that the installation cannot continue or did not complete successfully, the installation process may retry after your next ignition cycle. If the problem persists, contact your dealer to arrange a service appointment as soon as possible. You can also decline the update by selecting the “Learn More” button, and then “Details” and then the “Decline Update” option. If you decline the update, contact your dealer to arrange a service appointment as soon as possible. If you need to bring your vehicle to the dealer, it is likely that your dealer will need your vehicle longer than the actual service correction time of approximately 45 minutes. Do you have questions? If you have questions or concerns that your dealer is unable to resolve, please contact the appropriate Customer Assistance Center at the number listed below. For the hearing or speech impaired, please contact our Customer Assistance Center using the Telecommunication Relay Service by dialing 711 then providing the appropriate Customer Assistance Center number for your vehicle. Division Number Text Telephones (TTY) Buick 1-800-521-7300 711 / 1-800-833-2438 Cadillac 1-800-333-4223 711 / 1-800-833-2438 Chevrolet 1-800-222-1020 711 / 1-800-833-2438 GMC 1-800-462-8782 711 / 1-800-833-2438 Puerto Rico – English 1-866-467-9700 Puerto Rico – Español 1-866-467-9700 Virgin Islands 1-866-467-9700 If after contacting your dealer and the Customer Assistance Center, you are still not satisfied we have done our best to remedy this condition without charge and within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE., Washington, DC 20590, or call the toll-free Vehicle Safety Hotline at 1.888.327.4236 (TTY 1.800.424.9153), or go to http://www.nhtsa.gov. The National Highway Traffic Safety Administration Campaign ID Number for this recall is 22V903. Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days. Regina A. Carto Vice President Global Product Safety and Systems GM Recall: N222386380

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IMPORTANT SAFETY RECALL January 2023 This notice applies to your vehicle, VIN: _____________________________________ Dear General Motors Customer: This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. General Motors has decided that certain 2020 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500 New, Suburban, and Tahoe, and GMC Sierra 1500 New, Yukon, and Yukon XL vehicles fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) No. 108. As a result, GM is conducting a recall. We apologize for this inconvenience. However, we are concerned about your safety and continued satisfaction with our products. IMPORTANT • Your vehicle is involved in GM recall N222386380. • A software update is available for your vehicle that can be performed remotely with wireless over-the-air technology. If you’ve already accepted the update, no further action is necessary. If you have not accepted the update, follow the in-vehicle radio prompts or schedule an appointment with your dealer. • This service will be performed for you at no charge. Why is your vehicle being recalled? The daytime running lamps (DRLs) may not deactivate when the headlamps are on. If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. What will we do? General Motors will update the software in the vehicles’ Body Control Module (BCM) to correct the condition. Owners who have accepted the applicable terms and conditions may have already received the update with wireless over-the-air technology and will not have to bring their vehicle to a dealership. GM began prompting owners through the vehicle’s radio screen on December 8, 2022. Any owner having received this update through over the air (OTA) technology will not have to bring their vehicle to a dealership. Alternatively, owners may schedule to have the updates performed at your dealer. What should you do? The software update can be performed remotely using wireless over-the-air technology. If you’ve already accepted the update, no further action is necessary. If you have not accepted the update, you will be notified that the update is available by in-vehicle prompts from the radio display. This software update is a two-step process which consists of downloading the software update to your vehicle, and then installing it. First, you’ll be prompted to accept the software download. In order to successfully accept the download, your vehicle must be parked. After you accept the download, and throughout the downloading process, the vehicle may be driven and operated as normal. Once the download is complete, you’ll be asked to accept the software installation. The vehicle must be parked when you accept the installation. It must remain parked, with the ignition in the OFF position, throughout the installation process. Installation will only take up to 15 minutes, and you do not have to stay in your vehicle while the software is installing. Your vehicle will not be operational during the installation process, and must remain parked while the software is installing to your vehicle. Once the software update is complete, please know that you may need to reconfigure certain vehicle settings or preferences, as they may have been altered as a result of the update. Upon your next ignition cycle after the installation completes, your vehicle’s radio will display a confirmation message that the update was successful. If you receive a message that the installation cannot continue or did not complete successfully, the installation process may retry after your next ignition cycle. If the problem persists, contact your dealer to arrange a service appointment as soon as possible. You can also decline the update by selecting the “Learn More” button, and then “Details” and then the “Decline Update” option. If you decline the update, contact your dealer to arrange a service appointment as soon as possible. If you need to bring your vehicle to the dealer, it is likely that your dealer will need your vehicle longer than the actual service correction time of approximately 45 minutes. Do you have questions? If you have questions or concerns that your dealer is unable to resolve, please contact the appropriate Customer Assistance Center at the number listed below. For the hearing or speech impaired, please contact our Customer Assistance Center using the Telecommunication Relay Service by dialing 711 then providing the appropriate Customer Assistance Center number for your vehicle. Division Number Text Telephones (TTY) Buick 1-800-521-7300 711 / 1-800-833-2438 Cadillac 1-800-333-4223 711 / 1-800-833-2438 Chevrolet 1-800-222-1020 711 / 1-800-833-2438 GMC 1-800-462-8782 711 / 1-800-833-2438 Puerto Rico – English 1-866-467-9700 Puerto Rico – Español 1-866-467-9700 Virgin Islands 1-866-467-9700 If after contacting your dealer and the Customer Assistance Center, you are still not satisfied we have done our best to remedy this condition without charge and within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE., Washington, DC 20590, or call the toll-free Vehicle Safety Hotline at 1.888.327.4236 (TTY 1.800.424.9153), or go to http://www.nhtsa.gov. The National Highway Traffic Safety Administration Campaign ID Number for this recall is 22V903. Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days. Regina A. Carto Vice President Global Product Safety and Systems GM Recall: N222386380

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GLOBAL SAFETY FIELD INVESTIGATIONS DCS6399 URGENT – DISTRIBUTE IMMEDIATELY Date: January 10, 2023 Subject: REVISION: N222386380-02– Noncompliance Recall Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Customer Letter Added and Opened 2020 Cadillac CT4 and CT5 Models: 2020 – 2023 Cadillac CT4 2020 – 2023 Cadillac CT5 2021 – 2023 Buick Envision 2022 – 2023 Cadillac Escalade, Escalade ESV 2022 – 2023 Chevrolet Silverado 1500 New 2022 – 2023 Chevrolet Suburban 2022 – 2023 Chevrolet Tahoe 2022 – 2023 GMC Sierra 1500 New 2022 – 2023 GMC Yukon, Yukon XL To: All General Motors Dealers This bulletin is being revised to include all makes and models and to include the customer letter. Please discard all previous copies of bulletin N222386380. Customer Letter Mailing The customer letter mailing will begin on January 24, 2023. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS

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GM CUSTOMER CARE AND AFTERSALES DCS6410 URGENT – DISTRIBUTE IMMEDIATELY Date: January 17, 2023 Subject: SUSPEND: N222386380 – Noncompliance Recall – Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Noncompliance Recall Bulletin Temporarily Suspended for Select Models Models Impacted: 2022-2023 Cadillac Escalade, Escalade ESV 2022-2023 Chevrolet Suburban 2022-2023 Chevrolet Tahoe 2022-2023 GMC Yukon, Yukon XL To: All General Motors Dealers This message is to inform dealers that Noncompliance Recall N222386380, released on December 8, 2022 through GM GlobalConnect Message GCUS-3-2722, is being temporarily suspended for the 2022-2023 model year Cadillac Escalade, Escalade ESV, Chevrolet Suburban, Chevrolet Tahoe, GMC Yukon and Yukon XL. Involved vehicle status in IVH will be temporarily changed from “Open” to “Incomplete, Remedy Not Available”. Dealers will be notified when repairs can be resumed. We apologize for any inconvenience this situation may cause. GM CUSTOMER CARE AND AFTERSALES

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GLOBAL SAFETY FIELD INVESTIGATIONS DCS6419 URGENT – DISTRIBUTE IMMEDIATELY Date: January 20, 2023 Subject: UPDATE: N222386380– Noncompliance Recall Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Recall Reinstated Models: 2022 – 2023 Cadillac Escalade, Escalade ESV 2022 – 2023 Chevrolet Silverado 1500 New 2022 – 2023 GMC Sierra 1500 New 2022 – 2023 Chevrolet Suburban 2022 – 2023 Chevrolet Tahoe 2022 – 2023 GMC Yukon, Yukon XL To: All General Motors Dealers On January 17 and 18, 2023, General Motors temporarily suspended Noncompliance Recall N222386380 via GlobalConnect Message GCUS-3-2775 and GCUS-3-2778 for the 2022-2023 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 1500 New, Suburban, Tahoe, and GMC Sierra 1500 New, Yukon, and Yukon XL. The purpose of this message is to inform dealers they may now resume repairs for these models. Involved vehicle status in IVH for all vehicles will be changed to an “Open” status on January 20, 2023. Please hold all warranty transactions until January 21, 2023. We apologize for any inconvenience this situation may have caused. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS

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GM CUSTOMER CARE AND AFTERSALES DCS6414 URGENT – DISTRIBUTE IMMEDIATELY Date: January 18, 2023 Subject: SUSPEND: N222386380 – Noncompliance Recall – Daytime Running Lights (DRL) May Not Deactivate When Headlamps Are On Noncompliance Recall Bulletin Temporarily Suspended for Additional Select Models Models Impacted: 2022-2023 Cadillac Escalade, Escalade ESV 2022-2023 Chevrolet Silverado 1500 New 2022-2023 Chevrolet Suburban 2022-2023 Chevrolet Tahoe 2022-2023 GMC Sierra 1500 New 2022-2023 GMC Yukon, Yukon XL To: All General Motors Dealers On January 17, 2023 we temporarily suspended 2022-2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Suburban and Tahoe, GMC Yukon and Yukon XL. The suspension is still in effect for those models. Effective January 18, 2023, the 2022-2023 Chevrolet Silverado 1500 New and GMC Sierra 1500 New have been added to the population of vehicles that are suspended. Involved vehicle status in IVH will be temporarily changed from “Open” to “Incomplete, Remedy Not Available”. Dealers will be notified when repairs can be resumed. We apologize for any inconvenience this situation may cause. For vehicles in “Incomplete, Remedy Not Available” status, it is a violation of federal law for a dealer to deliver a new motor vehicle or any new or used item of motor vehicle equipment (including a tire) covered by this notification until the noncompliance is remedied. Until further instructions are received, involved vehicles that are in dealers’ possession (new or used vehicle inventory, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc.) must be held and not delivered to customers, dealer-traded, released to auction, used for demonstration purposes or any other dealer use. All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System (CPOIS) will be de-certified. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-903 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : General Motors, LLC Submission Date : JAN 20, 2023 NHTSA Recall No. : 22V-903 Manufacturer Recall No. : N222386380 Manufacturer Information : Manufacturer Name : General Motors, LLC Address : 29427 Louis Chevrolet Road MAIL CODE 480-210-2V WARREN MI 48093 Company phone : 586-596-1733 Population : Number of potentially involved : 740,108 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2021-2023 Buick Envision Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 85,950 Buick Envision vehicles involved in this recall. Production Dates : JUL 20, 2020 – DEC 06, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2023 Cadillac Escalade Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 26,783 Cadillac Escalade vehicles involved in this recall. Production Dates : JUN 22, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2022-2023 Cadillac Escalade ESV Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 17,269 Cadillac Escalade ESV vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2022-2023 Chevrolet Silverado 1500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for lowbeams and daytime running lights and are not affected by this recall. There are 170,248 Chevrolet Silverado 1500 vehicles involved in this recall. Production Dates : OCT 18, 2021 – NOV 25, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2022-2023 Chevrolet Suburban Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for low-beams and daytime running lights and are not affected by this recall. There are 57,503 Chevrolet Suburban vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 6 : 2020-2023 Cadillac CT5 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. There are 43,510 Cadillac CT5 vehicles involved in this recall. Production Dates : MAY 29, 2019 – DEC 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 7 : 2022-2023 GMC Sierra 1500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 115,885 GMC Sierra 1500 vehicles involved in this recall. Production Dates : NOV 09, 2021 – NOV 22, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2022-2023 GMC Yukon Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 54,089 GMC Yukon vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 9 : 2022-2023 GMC Yukon XL Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 39,368 GMC Yukon XL vehicles involved in this recall. Production Dates : JUN 23, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 10 : 2020-2023 Cadillac CT4 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. There are 24,697 Cadillac CT4 vehicles involved in this recall. Production Dates : SEP 11, 2019 – DEC 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 11 : 2022-2023 Chevrolet Tahoe Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for low-beams and daytime running lights and are not affected by this recall. There are 104,806 Chevrolet Tahoe vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : General Motors has decided that certain 2020 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehicles, fail to conform, in part, to S7.10.5 of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, “Lamps, reflective devices, and associated equipment.” The daytime running lamps (DRLs) may not deactivate when the headlamps are on, as required by S7.10.5, Table I-a. of FMVSS 108. FMVSS 1 : 108 – Lamps, reflective devices, and assoc. Equipment FMVSS 2 : NR Description of the Safety Risk : If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. Description of the Cause : The body control module (BCM) software in these vehicles, under a combination of certain pre-conditions, may fail to deactivate the DRLs when the headlamps are on. Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13534824 ,13534861, 13534887, 13535060, 13535063, 13536377, 13537291, 13538873, 13539315, 13540164 Component Name 2 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13540488, 13540793, 13541803, 13541809, 13542153, 13546036, 13546973, 13546976, 13547770, 13548773 Component Name 3 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13534822, 13534885, 13535062, 13536375, 13537290, 13540487, 13540792, 13541806, 13541807, 13542151 Part 573 Safety Recall Report 22V-903 Page 6 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 4 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13542224, 13546033, 13546034, 13546971, 13546972, 13546974, 13546975, 13547768, 13547769, 13548771 Component Name 5 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13548772 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : A vehicle controls engineer submitted a report to GM’s Speak Up For Safety (SUFS) program on October 6, 2022 to determine whether additional GM vehicles may be affected by a software issue that had been found in certain 2021 model year full-size sport-utility vehicles, resulting in GM recall No. 22V827. The body control module (BCM) software in those vehicles, under a combination of certain pre-conditions, could fail to deactivate the DRLs when the headlamps are on. GM opened an investigation on October 24, 2022. GM’s investigator identified additional models and model years with similar software to vehicles subject to Recall 22V827. Testing demonstrated the condition was present in the subject vehicles, while other vehicles were unaffected due to differences in software and/or hardware. On December 1, 2022, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a recall for potential noncompliance with this standard. Part 573 Safety Recall Report 22V-903 Page 7 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : General Motors will update the software in the vehicles’ Body Control Module (BCM) to correct the condition. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may schedule to have the updates performed at a GM dealer. Pursuant to 49 C.F.R. § 573.13(d)(1), all covered vehicles are under warranty, so reimbursement is not offered. How Remedy Component Differs from Recalled Component : The updated BCM software will correct the condition. Identify How/When Recall Condition was Corrected in Production : Containment efforts were initiated on: 11/16/2022 at GM’s Arlington plant, 11/22/2022 at the Fort Wayne plant, 12/01/2022 at the Lansing plant, 11/25/2022 at the Oshawa plant, 11/08/2022 at the Silao plant, and 11/30/22 at the Dong Yue plant. Recall Schedule : Description of Recall Schedule : Dealers will be notified December 8, 2022. Owners of Cadillac CT4, CT5, and Buick Envision vehicles will be mailed notification by February 6, 2023. Owners of all other models will be mailed interim notification by February 6, 2023. GM estimates these owners will be mailed notification of an available remedy by March 3, 2023. Planned Dealer Notification Date : DEC 08, 2022 – DEC 08, 2022 Planned Owner Notification Date : FEB 06, 2023 – MAR 03, 2023 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-903 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : General Motors, LLC Submission Date : JAN 23, 2023 NHTSA Recall No. : 22V-903 Manufacturer Recall No. : N222386380 Manufacturer Information : Manufacturer Name : General Motors, LLC Address : 29427 Louis Chevrolet Road MAIL CODE 480-210-2V WARREN MI 48093 Company phone : 586-596-1733 Population : Number of potentially involved : 740,108 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2023 Cadillac Escalade Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 26,783 Cadillac Escalade vehicles involved in this recall. Production Dates : JUN 22, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2023 Cadillac Escalade ESV Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 17,269 Cadillac Escalade ESV vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2022-2023 Chevrolet Silverado 1500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for lowbeams and daytime running lights and are not affected by this recall. There are 170,248 Chevrolet Silverado 1500 vehicles involved in this recall. Production Dates : OCT 18, 2021 – NOV 25, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2022-2023 Chevrolet Suburban Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for low-beams and daytime running lights and are not affected by this recall. There are 57,503 Chevrolet Suburban vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2020-2023 Cadillac CT5 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. There are 43,510 Cadillac CT5 vehicles involved in this recall. Production Dates : MAY 29, 2019 – DEC 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 6 : 2021-2023 Buick Envision Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 85,950 Buick Envision vehicles involved in this recall. Production Dates : JUL 20, 2020 – DEC 06, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 7 : 2022-2023 GMC Yukon Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 54,089 GMC Yukon vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 8 : 2022-2023 GMC Yukon XL Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 39,368 GMC Yukon XL vehicles involved in this recall. Production Dates : JUN 23, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 9 : 2020-2023 Cadillac CT4 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. There are 24,697 Cadillac CT4 vehicles involved in this recall. Production Dates : SEP 11, 2019 – DEC 01, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 10 : 2022-2023 Chevrolet Tahoe Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year vehicles were recalled under 22V827. 2020 model year and earlier vehicles do not have the affected software and are not included in the recall. Base trim-level vehicles use the same light source for low-beams and daytime running lights and are not affected by this recall. There are 104,806 Chevrolet Tahoe vehicles involved in this recall. Production Dates : JUN 17, 2021 – NOV 16, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 11 : 2022-2023 GMC Sierra 1500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Manufacturing records were used to determine recall population. 2021 model year and earlier vehicles do not have the affected software and are not included in the recall. There are 115,885 GMC Sierra 1500 vehicles involved in this recall. Production Dates : NOV 09, 2021 – NOV 22, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 22V-903 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Noncompliance : Description of the Noncompliance : General Motors has decided that certain 2020 – 2023 model year Cadillac CT4 and CT5 vehicles; 2021 – 2023 model year Buick Envision vehicles; and 2022 – 2023 model year Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehicles, fail to conform, in part, to S7.10.5 of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, “Lamps, reflective devices, and associated equipment.” The daytime running lamps (DRLs) may not deactivate when the headlamps are on, as required by S7.10.5, Table I-a. of FMVSS 108. FMVSS 1 : 108 – Lamps, reflective devices, and assoc. Equipment FMVSS 2 : NR Description of the Safety Risk : If the DRLs do not deactivate when the headlamps are on, the resulting glare could increase the risk of a crash. Description of the Cause : The body control module (BCM) software in these vehicles, under a combination of certain pre-conditions, may fail to deactivate the DRLs when the headlamps are on. Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13534824 ,13534861, 13534887, 13535060, 13535063, 13536377, 13537291, 13538873, 13539315, 13540164 Component Name 2 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13540488, 13540793, 13541803, 13541809, 13542153, 13546036, 13546973, 13546976, 13547770, 13548773 Component Name 3 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13534822, 13534885, 13535062, 13536375, 13537290, 13540487, 13540792, 13541806, 13541807, 13542151 Part 573 Safety Recall Report 22V-903 Page 6 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 4 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13542224, 13546033, 13546034, 13546971, 13546972, 13546974, 13546975, 13547768, 13547769, 13548771 Component Name 5 : MODULE-ASM BODY CONT. Component Description : Body Control Module (BCM) Component Part Number : 13548772 Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : A vehicle controls engineer submitted a report to GM’s Speak Up For Safety (SUFS) program on October 6, 2022 to determine whether additional GM vehicles may be affected by a software issue that had been found in certain 2021 model year full-size sport-utility vehicles, resulting in GM recall No. 22V827. The body control module (BCM) software in those vehicles, under a combination of certain pre-conditions, could fail to deactivate the DRLs when the headlamps are on. GM opened an investigation on October 24, 2022. GM’s investigator identified additional models and model years with similar software to vehicles subject to Recall 22V827. Testing demonstrated the condition was present in the subject vehicles, while other vehicles were unaffected due to differences in software and/or hardware. On December 1, 2022, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a recall for potential noncompliance with this standard. Part 573 Safety Recall Report 22V-903 Page 7 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : General Motors will update the software in the vehicles’ Body Control Module (BCM) to correct the condition. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may schedule to have the updates performed at a GM dealer. Pursuant to 49 C.F.R. § 573.13(d)(1), all covered vehicles are under warranty, so reimbursement is not offered. How Remedy Component Differs from Recalled Component : The updated BCM software will correct the condition. Identify How/When Recall Condition was Corrected in Production : Containment efforts were initiated on: 11/16/2022 at GM’s Arlington plant, 11/22/2022 at the Fort Wayne plant, 12/01/2022 at the Lansing plant, 11/25/2022 at the Oshawa plant, 11/08/2022 at the Silao plant, and 11/30/22 at the Dong Yue plant. Recall Schedule : Description of Recall Schedule : Dealers will be notified December 8, 2022. Owner notification will be mailed by February 6, 2023. Planned Dealer Notification Date : DEC 08, 2022 – DEC 08, 2022 Planned Owner Notification Date : FEB 06, 2023 – FEB 06, 2023 * NR – Not Reported

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