NHTSA safety investigation
NHTSA Investigation RQ26001
Recall Query · General Motors, LLC · ENGINE
This investigation is open. That is not a finding that a defect exists.
NHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
What NHTSA is examining
The agency's own description of the inquiry, quoted as published
Loss of motive power due to engine failure post recall remedy
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.
An investigation is a separate record from a recall and from a manufacturer communication. A manufacturer campaign to repair a safety defect or a failure to meet a federal safety standard.
Investigation details
Identifiers, dates and outcome as recorded by NHTSA
- Action number
- RQ26001
- Investigation type
- Recall Query (RQ)
- Status
- Open
- Manufacturer
- General Motors, LLC
- Component
- ENGINE
- Opened
- Jan 16, 2026
- Closed
- Not recorded
- Associated recall campaign
- None recorded — the inquiry is ongoing
Vehicles named in this investigation
32 model years across 8 models
- Cadillac Escalade
- Cadillac Escalade Esv
- Chevrolet Silverado 1500
- Chevrolet Suburban
- Chevrolet Tahoe
- GMC Sierra 1500
- GMC Yukon
- GMC Yukon Xl
Being named here means NHTSA included the vehicle in the scope of its inquiry. It is not a statement that these vehicles have a defect.