N232415910 Rear Suspension Bolt Fracture – 2023 Cadillac, Chevrolet, & GMC

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Safety Recall N232415910 Rear Suspension Bolt Fracture Copyright 2023 General Motors. All Rights Reserved. Page 1 of 3 Release Date: October 2023 Revision: 01 Revision Description: This bulletin was revised to update the part description, labor operation description, and the graphic and torque specification in step 2 of the service procedure. Please discard all previous copies of bulletin N232415910. 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. Make Model Model Year RPO Description From To Cadillac Escalade 2023 2023 Cadillac Escalade ESV Chevrolet Suburban Chevrolet Tahoe GMC Yukon GMC Yukon XL 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 a defect, which relates to motor vehicle safety, exists in certain 2023 model year Cadillac Escalade and Escalade ESV; Chevrolet Suburban and Tahoe; and GMC Yukon and Yukon XL vehicles. A bolt in the left and/or right rear-suspension outer-camber control arm assembly in these vehicles may not have been properly heat-treated by the supplier. Over time, an improperly heat-treated bolt may weaken and fracture, which can result in misalignment of the rear wheel, increasing the risk of a crash. Correction Dealers will replace both rear suspension outer control arm bolts. Parts Quantity Part Name Part No. 2 Rear Suspension Upper Control Arm Outer Bolt 11603317 Parts Pre-Ship Information – For USA & Canada Important: An initial supply of part 11603317 required to complete this recall will be pre-shipped to all 15 dealers who have vehicles on dealer lots. This pre-shipment is scheduled to begin and conclude September 21, 2023. Pre-shipped parts will be charged to dealer’s open parts account. It is estimated that there are only 223 involved vehicles that will require parts being replaced. VIN Verification If you have one of the involved vehicles, you must place a CSO order and add a SPAC case with the appropriate VIN. Due to limited inventory, VIN Verification will be conducted on the vehicle identification number you input and if it isn’t an OPEN Recall in IVH then the order will be cancelled daily. All other orders except SPAC will be cancelled. Reminder: Parts may be removed from Retail Inventory Management (RIM). Dealers should review the affected parts to confirm RIM managed status. Parts may have quantity limiters in effect. Warranty Information Labor Operation Description Labor Time Trans. Type Net Item 9106981 Rear Suspension Upper Control Arm Outer Bolt Replacement (Both Sides) 0.5 ZFAT N/A Service Procedure 1. Remove both rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation in SI. Safety Recall N232415910 Rear Suspension Bolt Fracture Page 2 of 3 5549248 2. Remove and replace the Rear Suspension Upper Control Arm Outer Bolt on both sides of the vehicle. Torque the new bolt to 160 Nm (118 lb ft). Note: It is not necessary to perform an alignment following replacement of these outer bolts. 3. Reinstall both rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation in SI. 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 Pre-Owned (CPO), courtesy transportation vehicles, dealer shuttle vehicles, CarBravo, 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 Pre-Owned (CPO) vehicles currently in the dealers’ inventory within the SHIFT Digital system 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 SHIFT Digital system, or once again be used in the Courtesy Transportation 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. 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 recall 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 recall 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 Safety Recall N232415910 Rear Suspension Bolt Fracture Page 3 of 3 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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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-642 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : General Motors, LLC Submission Date : SEP 20, 2023 NHTSA Recall No. : 23V-642 Manufacturer Recall No. : N232415910 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 : 189 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2023-2023 Cadillac Escalade Vehicle Type : Body Style : Power Train : NR Descriptive Information : Assembly line torque data for the rear suspension outer camber bolt was used to determine the affected population. Vehicles whose assembly line torque data does not indicate use of a suspect bolt are not included in this recall. There are 9 Cadillac Escalade vehicles included in this recall. Production Dates : JUN 20, 2023 – JUN 27, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2023-2023 Cadillac Escalade ESV Vehicle Type : Body Style : Power Train : NR Descriptive Information : Assembly line torque data for the rear suspension outer camber bolt was used to determine the affected population. Vehicles whose assembly line torque data does not indicate use of a suspect bolt are not included in this recall. There are 9 Cadillac Escalade ESV vehicles included in this recall. Production Dates : JUN 19, 2023 – JUN 23, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-642 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2023-2023 Chevrolet Suburban Vehicle Type : Body Style : Power Train : NR Descriptive Information : Assembly line torque data for the rear suspension outer camber bolt was used to determine the affected population. Vehicles whose assembly line torque data does not indicate use of a suspect bolt are not included in this recall. There are 39 Chevrolet Suburban vehicles included in this recall. Production Dates : JUN 19, 2023 – JUN 27, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2023-2023 Chevrolet Tahoe Vehicle Type : Body Style : Power Train : NR Descriptive Information : Assembly line torque data for the rear suspension outer camber bolt was used to determine the affected population. Vehicles whose assembly line torque data does not indicate use of a suspect bolt are not included in this recall. There are 74 Chevrolet Tahoe vehicles included in this recall. Production Dates : JUN 19, 2023 – JUN 26, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 5 : 2023-2023 GMC Yukon Vehicle Type : Body Style : Power Train : NR Descriptive Information : Assembly line torque data for the rear suspension outer camber bolt was used to determine the affected population. Vehicles whose assembly line torque data does not indicate use of a suspect bolt are not included in this recall. There are 31 GMC Yukon vehicles included in this recall. Production Dates : JUN 19, 2023 – JUN 26, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-642 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 6 : 2023-2023 GMC Yukon XL Vehicle Type : Body Style : Power Train : NR Descriptive Information : Assembly line torque data for the rear suspension outer camber bolt was used to determine the affected population. Vehicles whose assembly line torque data does not indicate use of a suspect bolt are not included in this recall. There are 27 GMC Yukon XL vehicles included in this recall. Production Dates : JUN 19, 2023 – JUN 26, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : General Motors has decided that a defect, which relates to motor vehicle safety, exists in certain 2023 model year Cadillac Escalade and Escalade ESV; Chevrolet Suburban and Tahoe; and GMC Yukon and Yukon XL vehicles. A bolt in the left and/or right rear-suspension outer-camber control arm assembly in these vehicles may not have been properly heat-treated by the supplier. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Over time, an improperly heat-treated bolt may weaken and fracture, which can result in misalignment of the rear wheel, increasing the risk of a crash. Description of the Cause : Standardized work instructions and quality test procedures were not properly followed by the supplier for some bolts supplied for vehicles produced between June 19 and June 25, 2023. Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : BOLT, RR SUSP UPR CONT ARM OTR (M14X2X78) Component Description : Bolt Component Part Number : 11603317 Part 573 Safety Recall Report 23V-642 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Supplier Identification : Component Manufacturer Name : Acument Global Technologies Address : 6125 18 Mile Rd Sterling Heights Michigan 48314 Country : United States Chronology : On August 4, 2023, GM opened an investigation into the subject condition after a plant quality manager at GM’s Arlington, TX assembly plant determined that up to 223 vehicles may have received an improperly heat-treated bolt and were not contained at the plant. 189 of these vehicles are in the US. During the investigation, testing and analysis demonstrated that, in the event of a control arm separation, there was a potential for rear wheel misalignment that may affect vehicle handling. GM is not aware of any field incidents related to this condition. On September 13, 2023, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a safety recall. Description of Remedy : Description of Remedy Program : Dealers will replace both rear suspension outer control arm bolts. 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 replacement bolt has been properly heat-treated. Identify How/When Recall Condition was Corrected in Production : Containment efforts were fully implemented by June 28, 2023. Vehicles produced after June 27, 2023 were built with rear suspension outer camber bolts outside of the supplier’s suspect window or were identified and addressed prior to shipment. Recall Schedule : Description of Recall Schedule : Dealers will be notified on September 20, 2023. GM estimates owner notification will begin on November 6, 2023. Planned Dealer Notification Date : SEP 20, 2023 – SEP 20, 2023 Planned Owner Notification Date : NOV 06, 2023 – NOV 06, 2023 * NR – Not Reported

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Reference Number: GCUS-3-3034 N232415910 – Safety Recall – Rear Suspension Bolt Fracture GLOBAL SAFETY FIELD INVESTIGATIONS DCS6677 URGENT – DISTRIBUTE IMMEDIATELY Date: September 20, 2023 Subject: N232415910 – Safety Recall Rear Suspension Bolt Fracture Models: 2023 Cadillac Escalade 2023 Cadillac Escalade ESV 2023 Chevrolet Suburban 2023 Chevrolet Tahoe 2023 GMC Yukon 2023 GMC Yukon XL To: All General Motors Dealers General Motors is releasing Safety Recall N232415910 today. The total number of U.S. vehicles involved is 189. Please see the attached bulletin for details. Frequently Asked Questions Document (FAQs) Attached to this message you will find a document that addresses the most likely questions customers may have regarding this Safety Recall. Please use this information as an aid to confidently answer customer concerns. Customer Letter Mailing The customer letter mailing will begin in the near future. Global Warranty Management (GWM) The Required Field Action section on the Investigate Vehicle History (IVH) screen will be updated September 20, 2023. A list of vehicles in dealer inventory is attached to this message. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS

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Reference Number: GCUS-3-3041 REVISION: N232415910-01 – Safety Recall – Rear Suspension Bolt Fracture GLOBAL SAFETY FIELD INVESTIGATIONS DCS6686 URGENT – DISTRIBUTE IMMEDIATELY Date: October 3, 2023 Subject: REVISION: N232415910-01 – Safety Recall Rear Suspension Bolt Fracture Revised Part, Warranty, Procedure sections Models: 2023 Cadillac Escalade 2023 Cadillac Escalade ESV 2023 Chevrolet Suburban 2023 Chevrolet Tahoe 2023 GMC Yukon 2023 GMC Yukon XL To: All General Motors Dealers This bulletin was revised to update the part description, labor operation description, and the graphic and torque specification in step 2 of the service procedure. Please discard all previous copies of bulletin N232415910. Frequently Asked Questions Document (FAQs) Attached to this message you will find a document that addresses the most likely questions customers may have regarding this Safety Recall. Please use this information as an aid to confidently answer customer concerns. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS

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