Safety Recall N202324251 Roof Rail Air Bag Inflator May Rupture – 2015-2016 Chevrolet Silverado & GMC Sierra

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IMPORTANT SAFETY RECALL August 2021 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 a defect which relates to motor vehicle safety exists in certain 2015 – 2016 model year Chevrolet Silverado 1500/2500/3500 and GMC Sierra 1500/2500/3500 vehicles. As a result, GM is conducting a safety 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 safety recall N202324251. • You may have received notification that your vehicle was involved with GM Safety Recall N202309680 / N202309681 / N202309682 (20V736). Vehicles in that recall will be addressed under safety recall N202324251. Why is your vehicle being recalled? In these vehicles, the roof-rail airbag (“RRAB”) inflators, which are located on the left- and right-side roof rails above the headliner, may contain a manufacturing defect that may result in inflator end cap separation or inflator sidewall split. If the end cap separates from the RRAB inflator or a sidewall rupture occurs, the compressed gas will escape from the inflator and the end cap or other components can be propelled into the vehicle, potentially causing an occupant injury if the vehicle is occupied. What will we do? Parts to repair your vehicle are not currently available, but when parts are available, your GM dealer will replace suspect left and right side RRAB modules. This service will be performed for you at no charge. We are working as quickly as possible to correct this condition. When parts are available, we will send you another letter asking you to take your vehicle to your GM dealer to have your vehicle serviced. You can also check the status of this recall at: https://my.gm.com/recalls. If you have already paid for repairs for this condition, you may submit those charges using the reimbursement request form that will be provided with the next letter. 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. Division Number Text Telephones (TTY) Chevrolet 1-800-630-2438 1-800-833-2438 GMC 1-866-996-9463 1-800-462-8583 Puerto Rico – English 1-800-496-9992 Puerto Rico – Español 1-800-496-9993 Virgin Islands 1-800-496-9994 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 https://www.safercar.gov. The National Highway Traffic Safety Administration Campaign ID Number for this recall is 21V504. 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 Carto Vice President Global Vehicle Safety and Systems GM Recall: N202324251

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GLOBAL SAFETY FIELD INVESTIGATIONS DCS5857 URGENT – DISTRIBUTE IMMEDIATELY Date: July 1, 2021 Subject: Upcoming Safety Recalls N202324251 Roof Rail Air Bag Inflator May Rupture Models: 2015-2016 Chevrolet Silverado 1500 2015 Chevrolet Silverado 2500/3500 2015-2016 GMC Sierra 1500 2015 GMC Sierra 2500/3500 To: All General Motors Dealers General Motors has notified the National Highway Traffic Safety Administration (NHTSA) about an upcoming safety recall that involves certain 2015–2016 model year Chevrolet Silverado and GMC Sierra vehicles. The GM recall number is N202324251. 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. In these vehicles, the roof-rail airbag (“RRAB”) inflators, which are located on the left- and right-side roof rails above the headliner, may contain a manufacturing defect that may result in inflator end cap separation or inflator sidewall split. If the end cap separates from the RRAB inflator or a sidewall rupture occurs, the compressed gas will escape from the inflator and the end cap or other components can be propelled into the vehicle, potentially causing an occupant injury if the vehicle is occupied. Parts are not currently available, but when parts are available, dealers are to replace suspect left and right side RRAB modules. GM vehicles included in recall 20V736 (N202309680/N202309681/ N202309682) be closed under that recall number and addressed under this recall campaign. 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 July 2, 2021 or sooner. This action has been taken to assist dealers with determining which vehicles are involved so they can properly respond to customer inquiries. 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 Safety Recall. Please use this information as an aid to confidently answer customer concerns. Dealers will be advised when the recall bulletin is released. Until the recall bulletin is released, the IVH screen in GWM will display “N/A” under Release Date and “Incomplete – Remedy not yet available” under Status. This means the required repair is not yet available and dealers should not attempt to perform any repairs. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS

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GM CUSTOMER CARE AND AFTERSALES DCS5866 URGENT – DISTRIBUTE IMMEDIATELY Date: July 15, 2021 Subject: N202324251 – Safety Recall Roof Rail Air Bag Inflator May Rupture ZSET Labor Code Required Application for Used Vehicle Working Capital Assistance Program (WCAP) for VINs added July 1, 2021. Models: 2015-2016 Chevrolet Silverado 1500 2015-2016 Chevrolet Silverado 2500/3500 2015-2016 GMC Sierra 1500 2015-2016 GMC Sierra 2500/3500 To: All General Motors Dealers On July 1, 2021, GM sent to all GM dealers GlobalConnect Message GCUS-3-2243 regarding upcoming safety recall N202324251, previously GM recall 20V736 (N202309680/N202309681/N202309682) with added population. 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 N202324251 for the added population. If you have already registered for WCAP under GM recall 20V736 (N202309680/N202309681/N202309682), you do not need to register again. Instructions for submitting a claim for WCAP for these registrations will be included in the upcoming safety recall bulletin N202324251. 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-9-9188 dated March 10, 2020. Applications submitted on ineligible vehicles are subject to chargeback of any incentives paid to the dealer under the WCAP. Because compensation and tracking require 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 N202324251, 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 9800075 Working Capital Assistance for Safety Recall N202324251 (added population) 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

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