2023 GMC Sierra 1500

On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001.  This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024. GM cited the root cause as a supplier manufacturing and quality issue. GM’s recall remedy for Recall 25V-274 consisted of two different repairs, either an oil viscosity change or an engine replacement, based on the results of the remedy inspection procedure. ODI continues to receive reports of engine failures after the completion of the recall remedy. To date, ODI has received 499 complaints alleging post-remedy engine failure in vehicles subject to Recall 25V-274, 473 of which involved an oil viscosity change and 26 a complete engine replacement. Additionally, ODI has received 191 reports of L87 engine failures in engines produced after the production period cited in Recall 25V-274. GM reported receiving 6,953 complaints of post-remedy engine failure. ODI is opening this Engineering Analysisto continue investigating complaints of post-remedy engine failure. ODI is expanding the scope of this Investigation to include engines produced after the production period cited in the recall. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

The Office of Defects Investigation (ODI) has received 1,157 reports of engine bearing failure failures in the L87 6.2L engine produced by General Motors (GM). Of the 1,157 reports received, 173 are outside of the scope of recall 25V-274. These engines are installed in Model Years (MY) 2019–2024 Chevrolet Silverado 1500 and GMC Sierra 1500, and 2021-2024MY Chevrolet Suburban and Tahoe, GMC Yukon/Yukon XL, and Cadillac Escalade/Escalade ESV vehicles. The subject engine failures were investigated as part of a Preliminary Evaluation (PE25001).  GM determined that these engine failures were due to multiple supplier manufacturing and quality issues. GM issued recall 25V-274 to address the supplier manufacturing and quality issues produced between March 1, 2021, and May 31, 2024. Based on the issuance of recall 25V-274, NHTSA has closed PE25001. ODI continues to receive a significant number of reports of engine failure in vehicles outside the scope of 25V-274.  This presents a potential safety risk that warrants further investigation.  ODI is opening this Engineering Analysis (EA) to further evaluate the scope and severity of the potential problem and to fully assess the potential safety-related issues of vehicles built outside the recall scope. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001.  This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024. GM cited the root cause as a supplier manufacturing and quality issue. GM’s recall remedy for Recall 25V-274 consisted of two different repairs, either an oil viscosity change or an engine replacement, based on the results of the remedy inspection procedure. ODI continues to receive reports of engine failures after the completion of the recall remedy. To date, ODI has received 499 complaints alleging post-remedy engine failure in vehicles subject to Recall 25V-274, 473 of which involved an oil viscosity change and 26 a complete engine replacement. GM reported receiving 6,953 complaints of post-remedy engine failure. ODI will close this RQ and continue to investigate complaints of post-remedy engine failure for Recall 25V-274 as part of an Engineering Analysis (EA26005). To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

On January 16, 2025, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE25001 after receiving complaints and field reports concerning engine failures in MY2019-2024 GM’s full-size truck and SUV T1XX platform equipped with the L87 6.2L V8 engine. These complainants alleged engine bearing failures resulting in knocking and growling noises from the engine’s bottom end and in some cases more severe consequences such as broken connecting rods leading to engine damage, or engine failure. If the engine fails during vehicle operation, the vehicle will lose propulsion, increasing the risk of a crash. On April 24, 2025, GM issued recall 25V-274 to address the concern with L87 engines produced between March 1, 2021, and May 31, 2024.  GM cited the root cause as a supplier manufacturing and quality issues. GM’s  recall remedy will be either an oil change to an oil with a different viscosity or engine replacement depending on the results of the remedy inspection procedure. To date, ODI has received 1,157 allegations of engine bearing failure. GM submitted 55,464 reports in total, with 29,752 unique VINs. ODI continues to receive allegations of L87 engine failures which fall outside of the scope of recall 25V-274. Based on GM’s recall, ODI will close this PE. NHTSA will continue to investigate complaints of engine failure outside the scope of recall 25V-274 as part ofEngineering Analysis (EA25007). To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

A trim piece under my hood and above my grille on my 2023 GMC Sierra SLT 1500 flew off and over my windshield this morning during a heavy wind and rain storm. There was no previous damage to the front of my vehicle.

NHTSA ID

11766807

Incident

Sep 24, 2026

Upper bezel of front grille blew off driving down the hwy landing in oncoming lane of traffic. This is a known problem to GMC on late produced 2022 model year and issued a safety recall #XXX to replace the bezel and reinforce mounting points. I bought my 2023 GMC XXX and it was made in [XXX] so good chance it was made in 2022 and I could of had one of the faulty grilles. If not GMC still has a problem with upper grilles detaching while driving. I have talked to my dealer and GMC customer satisfaction with no help offered. I have bought a new grille and installed it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11766712

Incident

Sep 19, 2026

Code P1098 came up today 80k on the truck. Coolant Control Valve failure. Second time this has failed, first at 45k. Speed reduction activated.

NHTSA ID

11766541

Incident

Sep 22, 2026

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving 35 MPH, the vehicle lost power steering functionality. The "Service Power Steering" message was displayed and ESP warning light was illuminated. The dealer was contacted and diagnosed the vehicle with a short circuit in the module used to control the rack-and-pinion system, which had blown the fuse. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 83,000.

NHTSA ID

11766424

Incident

Sep 11, 2026

Mileage

83,000 mi

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving 70 MPH, the engine seized, causing the vehicle to stall and lose motive power in the middle of the interstate. The vehicle was unable to restart and was towed by OnStar service. The vehicle was towed to the dealer, where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was scheduled to be repaired by the dealer. The manufacturer was made aware of the failure by the dealer.

NHTSA ID

11766203

Incident

Sep 19, 2026

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving 60 MPH, the front grille shutter detached. The vehicle was taken to the dealer, where it was determined that the shutter had detached due to defective retention clips. The contact was informed that the entire front grille assembly needed to be replaced. The dealer associated the failure with a recall. The failure mileage was approximately 123,500.

NHTSA ID

11766159

Incident

Sep 18, 2026

Mileage

123,500 mi

The front upper grill broke and flew off the truck at highway speeds nearly causing a wreck. Zero previous damage. Simply broke at the connecting points without cause. . Pretty unreasonable for a 75000 dollar truck to have the upper grill just dislocate itself and nearly cause a major wreck at highway speeds

NHTSA ID

11766041

Incident

Sep 16, 2026

On September 11, 2026, while driving my 2023 GMC Sierra 1500 Denali Ultimate at approximately 70 mph on the Buckman Bridge (US 295 S), the painted upper grille/hood molding located between the hood and the top of the grille suddenly detached from the vehicle. Before I purchased the vehicle, it had sustained damage to the front fascia during transportation/shipping. As part of the repair prior to my purchase, the upper trim piece in this area was replaced by General Motors. To my knowledge, the replacement was performed by GM as part of the pre-delivery repair. The vehicle had not been involved in a collision or impact prior to the failure while I owned it. The component detached while the vehicle was traveling at approximately 70 mph on a bridge and entered active traffic. I was unable to determine what happened to the component after it entered traffic or whether it struck another vehicle. At the time of the incident, I did not initially realize exactly which component had detached. I subsequently determined that the missing part was the painted upper grille/hood molding/front upper grille deflector. I am reporting this because I have since learned that GM issued safety recall N242490120 / NHTSA recall 25V060 for certain 2022 GMC Sierra 1500 vehicles involving the front upper grille deflector. That recall describes fracture of the attachment points and the possibility of the deflector completely detaching while the vehicle is being driven. My vehicle is a 2023 model, but the component and reported failure appear substantially similar. The failure occurred at approximately 70 mph and caused a large exterior body component to enter active traffic, creating a potential hazard to other motorists. I am requesting that NHTSA document this incident and investigate whether the defect addressed by recall 25V060 also affects 2023 GMC Sierra 1500 vehicles, including vehicles in which the upper trim piece had previously been replaced by GM.

NHTSA ID

11765512

Incident

Sep 11, 2026

General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.

General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.

This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly.

Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain 2023-2024 model year Chevrolet Colorado / Silverado 1500 and GMC Canyon / Sierra 1500 vehicles equipped with a 2.7L engine (RPO L3B). The Engine Control Module (ECM) may not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM.

This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.