2024 Chevrolet Suburban Engine Defect Investigations
NHTSA Action Number:
RQ26001
Date Opened:
January 16, 2026
Component:
Engine
Manufacturer:
General Motors, Llc
Subject:
Loss Of Motive Power Due To Engine Failure Post Recall Remedy
Summary:
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-274s 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) 20192024 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 gms 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 engines 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. Gms recall remedy will beeither 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 gms 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.
2024 Chevrolet Suburban Engine Defect Investigations