N222368030 Rear Fuel Tank Failure May Cause Engine Stall – 2017-2019 Chevrolet Silverado & GMC Sierra 2500 3500

SEOCONTENT-START

OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-047 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : General Motors, LLC Submission Date : FEB 02, 2023 NHTSA Recall No. : 23V-047 Manufacturer Recall No. : N222368030 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 : 22,132 Estimated percentage with defect : 7 % Vehicle Information : Vehicle 1 : 2017-2019 Chevrolet Silverado 2500/3500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : GM manufacturing records were used to determine the recall population. This recall affects “Diesel” trucks (RPO L5P) with the dual fuel tank option (RPO N2N). Gasoline Trucks or diesel vehicles with a single fuel tank and 1500 series trucks are not affected by this recall. There are 17,436 Chevrolet Silverado 2500/3500 vehicles included in this recall. Production Dates : JUL 20, 2016 – APR 18, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2017-2019 GMC Sierra 2500/3500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : GM manufacturing records were used to determine the recall population. This recall affects “Diesel” trucks (RPO L5P) with the dual fuel tank option (RPO N2N). Gasoline Trucks or diesel vehicles with a single fuel tank and 1500 series trucks are not affected by this recall. There are 4,696 GMC Sierra 2500/3500 vehicles included in this recall. Production Dates : NOV 21, 2016 – APR 12, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-047 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Defect : Description of the Defect : General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2017-2019 model year Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 trucks with the diesel engine (RPO L5P) and the dual fuel tank (RPO N2N) configuration. In these vehicles, the rear fuel pump may not transfer adequate fuel to the front tank, which can cause a stall. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A vehicle stall could increase the risk of a crash. Description of the Cause : If the tank vent in the rear fuel tank becomes clogged with debris, a vacuum effect created during fuel transfer could cause the rear tank to collapse. If this occurs, the system may not provide sufficient fuel to the engine. Identification of Any Warning that can Occur : The driver may experience inaccurate or erratic fuel gage readings, engine stumble, a check engine light, and/or slow engine start. Involved Components : Component Name 1 : [Intentionally left blank] Component Description : [Intentionally left blank] Component Part Number : [Intentionally left blank] Supplier Identification : Component Manufacturer Name : [Intentionally left blank] Address : NR NR Country : NR Chronology : On August 2, 2022, GM opened a product investigation based on field data that indicated a relatively high rate of warranty returns alleging a loss of propulsion in 2019 model year Chevrolet Silverado 2500/3500 vehicles. The investigation was later expanded to include additional model years, all diesel engine vehicle segments, and the GMC Sierra sister vehicle. Between August 2022 and December 2022, GM analyzed warranty return information and field data claims Part 573 Safety Recall Report 23V-047 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 potentially related to loss of propulsion in the subject vehicles. GM also met with GM internal fuel-system experts and suppliers. GM’s investigation ultimately identified a small segment of diesel vehicles in this investigation population—vehicles with the dual tank configuration—that appeared to be susceptible to debris blockage on the top of the rear fuel tank. Within this vehicle population, GM’s investigation identified approximately 1,600 tank or fuel pump module damage claims. The first claim was received by GM on June 12, 2017. GM is not aware of any accidents or injuries associated with this condition. On January 26, 2023, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a safety recall on all 2017 – 2019 model year Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 diesel trucks with the dual fuel tank configuration. Description of Remedy : Description of Remedy Program : Dealers will inspect the fuel tank and fuel pump module and replace them if damaged due to this condition. Dealers will add a vent hose to all recalled vehicles’ rear tank assembly. Pursuant to 577.11, GM will provide reimbursement to owners for repairs according to the plan submitted on May 12, 2021. How Remedy Component Differs from Recalled Component : The added vent hose repositions the opening to an area that will reduce the opportunity for debris to clog the tank vent and cause this condition. Identify How/When Recall Condition was Corrected in Production : The vent hose was added to the fuel system design starting with 2020 model year 2500/3500 trucks. Recall Schedule : Description of Recall Schedule : Dealers will be notified on February 2, 2023. Owner notification is estimated to begin on March 24, 2023. Planned Dealer Notification Date : FEB 02, 2023 – FEB 02, 2023 Planned Owner Notification Date : MAR 24, 2023 – MAR 24, 2023 * NR – Not Reported

**************************************************************************************************************

GLOBAL SAFETY FIELD INVESTIGATIONS DCS6430 URGENT – DISTRIBUTE IMMEDIATELY Date: February 2, 2023 Subject: Stop Delivery Order for Upcoming Safety Recall N222368030 Inadequate Fuel Pump Flow Models: 2017-2019 Chevrolet Silverado 2500/3500 2017-2019 GMC Sierra 2500/3500 To: All General Motors Dealers STOP DELIVERY ORDER Effective immediately, stop the delivery of certain 2017-2019 model year Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 vehicles in new or used vehicle inventory. General Motors has notified the National Highway Traffic Safety Administration (NHTSA) about an upcoming safety recall that involves these vehicles. The GM recall number is N222368030. 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 defect is remedied. General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2017-2019 model year Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 trucks with the diesel engine (RPO L5P) and the dual fuel tank (RPO N2N) configuration. In these vehicles, the rear fuel pump may not transfer adequate fuel to the front tank, which can cause a stall. A vehicle stall could increase the risk of a crash. Parts are not currently available, but when parts are available, dealers will inspect the fuel tank and fuel pump module and replace them if damaged due to this condition. Dealers will add a vent hose to all recalled vehicles’ rear tank assembly. 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. The Investigate Vehicle History (IVH) screen in the Global Warranty Management (GWM) system will be updated for this upcoming recall on February 2, 2023. This action has been taken to assist dealers with determining which vehicles are involved so they can properly respond to customer inquiries. To identify involved vehicles in dealer used inventory, run an Open VIN Report or Field Action Initiation Report using Field Action Reports-GFAM within the Maxis Dealer Application in GlobalConnect. Frequently Asked Questions Document (FAQs) Attached to this message you will find a document that addresses the ten most likely questions customers may have regarding this Safety Recall Please use this information as an aid to confidently answer customer concerns. Until the recall bulletin is released, the Investigate Vehicle History (IVH) screen in the Global Warranty Management (GWM) system will display “02/02/2023” under Release Date and “Incomplete – Remedy Not Available” under Status. This means the required repair is not yet available and dealers should not attempt to perform any repairs. We are working with the supplier to obtain the required parts as quickly as possible. When a sufficient quantity of parts are available, the recall bulletin will be released and dealers can begin repairing vehicles. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS

**************************************************************************************************************

OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-047 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : General Motors, LLC Submission Date : FEB 15, 2023 NHTSA Recall No. : 23V-047 Manufacturer Recall No. : N222368030 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 : 22,132 Estimated percentage with defect : 7 % Vehicle Information : Vehicle 1 : 2017-2019 Chevrolet Silverado 2500/3500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : GM manufacturing records were used to determine the recall population. This recall affects “Diesel” trucks (RPO L5P) with the dual fuel tank option (RPO N2N). Gasoline Trucks or diesel vehicles with a single fuel tank and 1500 series trucks are not affected by this recall. There are 17,436 Chevrolet Silverado 2500/3500 vehicles included in this recall. Production Dates : JUL 20, 2016 – APR 18, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2017-2019 GMC Sierra 2500/3500 Vehicle Type : Body Style : Power Train : NR Descriptive Information : GM manufacturing records were used to determine the recall population. This recall affects “Diesel” trucks (RPO L5P) with the dual fuel tank option (RPO N2N). Gasoline Trucks or diesel vehicles with a single fuel tank and 1500 series trucks are not affected by this recall. There are 4,696 GMC Sierra 2500/3500 vehicles included in this recall. Production Dates : NOV 21, 2016 – APR 12, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-047 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Defect : Description of the Defect : General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2017-2019 model year Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 trucks with the diesel engine (RPO L5P) and the dual fuel tank (RPO N2N) configuration. In these vehicles, the rear fuel pump may not transfer adequate fuel to the front tank, which can cause a stall. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A vehicle stall could increase the risk of a crash. Description of the Cause : If the tank vent in the rear fuel tank becomes clogged with debris, a vacuum effect created during fuel transfer could cause the rear tank to collapse. If this occurs, the system may not provide sufficient fuel to the engine. Identification of Any Warning that can Occur : The driver may experience inaccurate or erratic fuel gage readings, engine stumble, a check engine light, and/or slow engine start. Involved Components : Component Name 1 : [Intentionally left blank] Component Description : [Intentionally left blank] Component Part Number : [Intentionally left blank] Supplier Identification : Component Manufacturer Name : [Intentionally left blank] Address : NR NR Country : NR Chronology : On August 2, 2022, GM opened a product investigation based on field data that indicated a relatively high rate of warranty returns alleging a loss of propulsion in 2019 model year Chevrolet Silverado 2500/3500 vehicles. The investigation was later expanded to include additional model years, all diesel engine vehicle segments, and the GMC Sierra sister vehicle. Between August 2022 and December 2022, GM analyzed warranty return information and field data claims Part 573 Safety Recall Report 23V-047 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 potentially related to loss of propulsion in the subject vehicles. GM also met with GM internal fuel-system experts and suppliers. GM’s investigation ultimately identified a small segment of diesel vehicles in this investigation population—vehicles with the dual tank configuration—that appeared to be susceptible to debris blockage on the top of the rear fuel tank. Within this vehicle population, GM’s investigation identified approximately 1,600 tank or fuel pump module damage claims. The first claim was received by GM on June 12, 2017. GM is not aware of any accidents or injuries associated with this condition. On January 26, 2023, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a safety recall on all 2017 – 2019 model year Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 diesel trucks with the dual fuel tank configuration. Description of Remedy : Description of Remedy Program : Dealers will inspect the fuel tank and fuel pump module and replace them if damaged due to this condition. Dealers will add a vent hose to all recalled vehicles’ rear tank assembly. Pursuant to 577.11, GM will provide reimbursement to owners for repairs according to the plan submitted on May 12, 2021. How Remedy Component Differs from Recalled Component : The added vent hose repositions the opening to an area that will reduce the opportunity for debris to clog the tank vent and cause this condition. Identify How/When Recall Condition was Corrected in Production : The vent hose was added to the fuel system design starting with 2020 model year 2500/3500 trucks. Recall Schedule : Description of Recall Schedule : Dealers will be notified on February 2, 2023. Owner interim notification is estimated to begin on March 24, 2023. Owner notification of an available remedy is estimated to begin May 17, 2023 Planned Dealer Notification Date : FEB 02, 2023 – FEB 02, 2023 Planned Owner Notification Date : MAY 17, 2023 – MAY 17, 2023 * NR – Not Reported

**************************************************************************************************************

GM CUSTOMER CARE AND AFTERSALES DCS6451 URGENT – DISTRIBUTE IMMEDIATELY Date: February 16, 2023 Subject: N222368030 – Safety Recall Inadequate Fuel Pump Flow Application for Used Vehicle Working Capital Assistance Program (WCAP) Models: 2017-2019 Chevrolet Silverado 2500/3500 2017-2019 GMC Sierra 2500/3500 To: All General Motors Dealers On February 2, 2023, GM sent to all GM dealers GlobalConnect Message GCUS-3-2797 regarding safety recall N222368030. The required repair to complete this recall is not yet available. Until further instructions are received, the 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 cannot be delivered to customers, dealer-traded, released to auction, used for demonstration purposes or put to any other use. This message is to inform dealers who have involved vehicles in their inventory that they can now apply for the used vehicle Working Capital Assistance Program (“WCAP”) for safety recall N222368030. Before proceeding with the application process described below, dealers must verify vehicle eligibility based on the program terms and guidelines that were provided in GM GlobalConnect Message GCUS-9-10968 dated March 10, 2021. Applications submitted on ineligible vehicles are subject to chargeback of any incentives paid to the dealer under the WCAP. Because compensation and tracking requires visibility into dealers’ inventory, dealers must also have agreed to a Dealer Data Share agreement with GM in order to receive any compensation under this program. To apply for the WCAP for safety recall N222368030, dealers must access the GM Global Warranty Management (GWM) system and submit a “ZSET” warranty transaction using the labor code provided below for each eligible vehicle. This zero dollar special transaction type is the dealer’s application for compensation and constitutes a representation from the dealer that the vehicle is eligible for WCAP assistance. Note: Acceptance of the warranty transaction does not ensure vehicle eligibility or guarantee the provision of any assistance as defined by program terms and guidelines. Labor Code Description Labor Time Trans Code 9800102 Working Capital Assistance for Safety Recall N222368030 N/A ZSET To be eligible for the WCAP, a vehicle must be in dealer inventory at the time the related field action bulletin is released. If a vehicle has been delivered, wholesaled or otherwise disposed of prior to release of the bulletin, the vehicle is not eligible for assistance. Additionally, recalled vehicles taken in on trade may be eligible for assistance if the dealer immediately reports the vehicle in used vehicle inventory via its Dealer Management System (DMS) and makes application through the GWM system. To ensure that GM is receiving daily inventory information, which is necessary to process payments and make eligibility determinations under the WCAP, the dealer’s vehicles must be properly identified in the dealership’s DMS. A daily feed of this information is provided to GM through the Dealer Data Share (DDS) agreement. Beginning with the 1st quarter of 2019, all WCAP payments will be facilitated through the Global Warranty Management (GWM) system. For each eligible vehicle, a qualifying dealer will submit for WCAP vehicle enrollment with a “ZSET” transaction type and for reimbursement with a “ZFAT” transaction type both through the GWM system. If approved, a WCAP credit for that vehicle will be issued through the GWM system similar to any other warranty credit. WCAP submission instructions and the required labor code will also be provided in the appropriate field action bulletin. Each WCAP transaction being credited will be clearly identified on the dealer’s daily credit memo. In order to receive payment, a dealer must have timely reported the vehicle in used vehicle inventory, retained the vehicle until the related field action bulletin is released, and properly applied for the WCAP payment. The vehicle must also be otherwise eligible under WCAP rules and guidelines. GM reserves the right to amend, modify, terminate, or cancel this program at any time in its sole discretion. END OF MESSAGE GM CUSTOMER CARE AND AFTERSALES

**************************************************************************************************************

**************************************************************************************************************

SEOCONTENT-END