NHTSA Complaint #11671523 — 2021 GMC SIERRA 1500

ENGINE issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11671523
Vehicle	2021 GMC SIERRA 1500
Component	ENGINE
Date of Incident	June 15, 2025
Date Filed	July 7, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	GA

Consumer Description

The coolant control valve on my truck is causing issues. From doing research, this is an ongoing issue with the 3.0 duramax. The part is on nationwide backorder and I cannot drive my vehicle in reduced engine power because the only way I can get to work is by taking the interstate. It is madness that GM has not issued a recall or done anything to rectify this issue. Many GMC owners are paying on vehicles that they are unable to drive which is assanine. This part needs to be readily available due to the NUMEROUS complaints that have already been submitted in regards to this part.

Related Complaints for the 2021 GMC SIERRA 1500

Other ENGINE Complaints

#11719556 — February 21, 2026 — I was driving on a highway on my way home from work. Thank god there was not a lot of traffic because my truck just s...

#11718970 — February 18, 2026 — The failed component is the engine coolant control valve on a 3.0L Duramax truck. The failure has been documented and...

#11717579 — February 12, 2026 — Had a P1098 code. The truck was diagnosed by a certified technician. Found to have a failing coolant control valve....

#11717252 — February 11, 2026 — Engine failure without any warning. Car maintenance was kept up-to-date.

#11716982 — February 10, 2026 — The engine has been burning oil since purchased but really highlighted when at 47k miles I got a dashboard message sa...

Recent Complaints for the 2021 GMC SIERRA 1500

#11719556 — BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING — February 21, 2026 — I was driving on a highway on my way home from work. Thank god there was not a lot of traffic because my truck just s...

#11719556 — POWER TRAIN — February 21, 2026 — I was driving on a highway on my way home from work. Thank god there was not a lot of traffic because my truck just s...

#11719314 — ENGINE AND ENGINE COOLING — February 20, 2026 — The contact owns a 2021 GMC Sierra 1500. The contact stated that while operating the vehicle, the check engine warnin...

#11718623 — POWER TRAIN — February 17, 2026 — I have had shuddering on the highway and a few hard random diwnshifts. Last week I went to start my truck and the tra...

#11716982 — POWER TRAIN — February 10, 2026 — The engine has been burning oil since purchased but really highlighted when at 47k miles I got a dashboard message sa...