NHTSA closes probe into 2019–2025 Cadillac, Chevrolet and GMC vehicles: Loss of motive power due to engine failure

Vehicles under investigation

As listed in NHTSA’s investigation file. Not every vehicle of a listed model is necessarily affected.

What ODI says

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.

Official summary by NHTSA’s Office of Defects Investigation for PE25001, quoted in full (U.S. government work, public domain).

What owners have reported

Owners filed 10,770 complaints with NHTSA about the model years in this investigation, reporting 198 crashes, 75 fires, 189 injuries. These are all complaints on file for those vehicles, about any problem, not only this one; complaints are unverified owner reports.

Recalls and problems for these vehicles

• Cadillac Escalade recalls by model year
  Cadillac Escalade complaints, TSBs and investigations
• Cadillac Escalade ESV recalls by model year
  Cadillac Escalade ESV complaints, TSBs and investigations
• Chevrolet Silverado recalls by model year
  Chevrolet Silverado complaints, TSBs and investigations
• Chevrolet Tahoe recalls by model year
  Chevrolet Tahoe complaints, TSBs and investigations
• Chevrolet Suburban recalls by model year
  Chevrolet Suburban complaints, TSBs and investigations
• Chevrolet Suburban 1500 recalls by model year
  Chevrolet Suburban 1500 complaints, TSBs and investigations

Related recalls

NHTSA links these recall campaigns to PE25001.

• 2021 Cadillac Escalade Engine Recall: Risk of Crash Due to Engine Failure
  NHTSA campaign 25V274000April 24, 2025

Timeline

1. January 16, 2025ODI opens preliminary evaluation PE25001
2. April 24, 2025NHTSA recall 25V274000 (recall date)
3. October 23, 2025ODI closes PE25001