NHTSA Complaint #11660267 — 2021 GMC SIERRA 1500

POWER TRAIN issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11660267
Vehicle	2021 GMC SIERRA 1500
Component	POWER TRAIN
Date of Incident	May 7, 2025
Date Filed	May 11, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	TX

Consumer Description

VEHICLE IS DIAGANOSED WITH A COOLANT CONTROL VALVE ISSUE. VEHICLE IS CURRENTLY AT A GM DEALER AWAITNG REPLACEMENT PART AND PART IS ON BACK ORDER FOR AN UNDERTEMINED AMOUNT OF TIME. IT IS WIDELY KNOWN THIS IS A COMMON PROBLEM WITH THIS MAKE AND YEAR MODEL OF VEHICLE. THIS MATTER PUTS AN UNDUE HARDSHIP ON ME AS A VEHICLE OWNER. WITH NO KNOWN ETA FOR THIS PART I STAND TO BE OUT OF USE OF THIS VEHICLE FOR A LONG TIME. GM NEEDS TO BE MORE ACCOUNTABLE AND ATTENTIVE TO THEIR CUSTOMERS AT A TIME LIKE THIS.

Related Complaints for the 2021 GMC SIERRA 1500

Other POWER TRAIN 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...

#11718623 — 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 — February 10, 2026 — The engine has been burning oil since purchased but really highlighted when at 47k miles I got a dashboard message sa...

#11713162 — January 25, 2026 — 4 months after bring my truck back to the dealership for a body valve issue on the 10 speed transmission. The truck w...

#11712819 — January 22, 2026 — On the afternoon of 01/20/26, I was merging onto the highway in my 2021 GMC Sierra 1500 when a loud bang was heard fr...

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 — ENGINE — 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...

#11718970 — ENGINE — 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 — ENGINE — February 12, 2026 — Had a P1098 code. The truck was diagnosed by a certified technician. Found to have a failing coolant control valve....