2024 Chevrolet Silverado 1500

The Office of Defects Investigation (ODI) has received 36 Vehicle Owner Questionnaires (VOQs) alleging engine failure in vehicles subject to Recall 25V274. In each VOQ, the engine had the recall remedy completed prior to the reported failure incident. Recall 25V-274 addresses vehicles equipped with a L87 6.2L V8 gas engine that experienced engine damage or failure. Recall 25V-274’s remedy includes an engine inspection.  Based on the results of the inspection the vehicle will receive an oil change to a higher viscosity oil or an engine replacement.  The complaints received allege failures of both remedies. ODI is opening this Recall Query (RQ) to assess the adequacy of the remedy for Recall 25V-274. 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, 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.

Glare on windshield from dash Glare in my eyes from all shiny trim on or around center console and around infotainment screen Very bad blind spots with trailer mirrors

NHTSA ID

11755633

Incident

Aug 3, 2026

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving 70 MPH, the RPM became elevated; however, the vehicle decelerated abnormally, causing the vehicle to lose power. The contact pulled over on the side of the road, turned off and restarted the vehicle, but the vehicle failed to operate as intended. The vehicle was towed to the dealer. The vehicle was serviced under NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING) by the owner, but the remedy failed to fix the vehicle. The manufacturer was not notified of the failure. The failure mileage was 28,500.

NHTSA ID

11753977

Incident

Nov 21, 2025

Mileage

28,500 mi

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving approximately 45 MPH, the transmission upshifted as intended; however, the vehicle then suddenly downshifted to a lower gear. No warning light was illuminated. In addition, the contact stated that the failure worsened and jolted the occupants inside the vehicle. The vehicle was taken to a local dealer where it was diagnosed; however, no cause for the failure was found. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 47,278.

NHTSA ID

11753466

Incident

Jul 24, 2026

Mileage

47,278 mi

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while reversing, the message "Service Transmission" was displayed. The vehicle was taken to the dealer, where an unknown transmission part was replaced; however, the failure persisted. The vehicle was taken back to the dealer, where the contact was informed that the transmission gear shifter had failed and needed to be replaced. The manufacturer was notified of the failure but denied covering the cost of the repair. The vehicle was not repaired. The failure mileage was approximately 39,000.

NHTSA ID

11752704

Incident

Jun 24, 2026

Mileage

39,000 mi

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated while the vehicle was parked, the contact attempted to shift the into reverse and the gear shifter failed to respond as needed. An independent mechanic was contacted. The vehicle was taken to the independent mechanic and was diagnosed and determined that the vacuum modulator needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 17,000.

NHTSA ID

11751207

Incident

Jul 9, 2026

Mileage

17,000 mi

The transmission lost the ability to move the vehicle. The valve body for the transmission became inoperable at 7,600 miles. This is a safety issue because it can leave people stranded in cold/inclement weather. This happened without warning and the dealer replaced a spacer and check balls for the valve.

NHTSA ID

11749827

Incident

Feb 17, 2025

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving at 75 MPH, the engine shut off without warning. The contact safely coasted to the shoulder of the road and requested assistance from 911 to secure the vehicle from oncoming traffic. The vehicle was then towed to a dealer, where a diagnostic assessment confirmed a total engine failure, requiring replacement. The contact had previously taken the vehicle to a dealer for NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the inspection yielded no visible issues, and the recall was marked as completed. The vehicle remained at the dealer and had yet to be repaired. The manufacturer had not been notified of the failure. The failure mileage was approximately 25,500.

NHTSA ID

11748744

Incident

Jul 2, 2026

Mileage

25,500 mi

Truck suddenly refused to shift gears/stopped moving forward in HEAVY TRAFFIC, placing me and my family--and others on the roadway--in danger. Dealership inspected the vehicle on three separate occasions for the same (recurring) issue, replacing the control valve body on one visit and the entire transmission on the third. No advance warning that the issue was about to occur on any of the three instances, but check engine light came on afterward along with a message reading "reduced acceleration/drive with care".

NHTSA ID

11746922

Incident

May 4, 2026

Certain vehicles may have a condition in which the Engine Control Module (ECM) does not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM.

Certain vehicles listed above may have a condition in which the vehicle may shift out of park without key fob inside vehicle while in "Protected Idle" Mode. Dealers will update the BCM software. 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.

This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.

This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.

This PI communicates diagnostic information to assist Technicians with a possible transmission shudder

This Preliminary information communicates to the technician on the a potential cause for Buzz/rattle/vibration/ from the passenger side when the vehicle is under light load, with a 3.0L LZ0 Engine. It also addresses the potential for a slow/no crank or not charging.