NHTSA Complaint #11680583 — 2021 CHEVROLET SUBURBAN

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11680583
Vehicle	2021 CHEVROLET SUBURBAN
Component	ENGINE
Date of Incident	August 12, 2025
Date Filed	August 14, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	AL

Consumer Description

My suburban is 4 years old and needs a new engine. The dealership is seeing a lot of 21's with the same issue. Bank 1 and 2 have failed, both powerods are broken and the cans and lifters have failed. There were no prior warning. We were driving and 2 warnings popped up and we took it to a dealership. We then went to a private repair shop for second opinion. The warranty is 70k miles and my car is 72k miles. This should not be happening with a 4 year old. The other Suburban engine has been recalled but mine has no current recalls on it.

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