NHTSA Complaint #11662126 — 2021 GMC SIERRA 1500

ENGINE issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11662126
Vehicle	2021 GMC SIERRA 1500
Component	ENGINE
Date of Incident	October 1, 2023
Date Filed	May 20, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	OH

Consumer Description

Engine has stopped a couple of times at low speeds, Was able to restart and continue. Engine will occasionally make a "straining / Dieseling sputtering sound" when execellerating from low speeds or Stop. Transmission will make strange and strained shifts from time to time. This is reaccruing problem that comes and goes over the last approximately 2 yrs since about 9000 miles to current approx 25000 miles.

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...