NHTSA Complaint #11713477 — 2021 GMC TERRAIN

ENGINE issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11713477
Vehicle	2021 GMC TERRAIN
Component	ENGINE
Date of Incident	January 26, 2026
Date Filed	January 26, 2026
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	WI

Consumer Description

The engine light came on while driving, saying “engine power reduced”. It barely accelerates, RPMs go over 5, it chugs when driving. Taken to an independent service center.

Related Complaints for the 2021 GMC TERRAIN

Other ENGINE Complaints

#11712586 — January 22, 2026 — around chirstmas, Was driving on the highway and the car threw a "reduced engine power" warning and went into limp mo...

#11656552 — April 24, 2025 — The contact owns a 2021 GMC Terrain. The contact stated while driving at various speeds, the transmission erroneously...

#11652800 — April 4, 2025 — The contact owns a 2021 GMC Terrain. The contact stated while driving 5 MPH, the vehicle stalled. There was no warnin...

#11635970 — January 14, 2025 — I purchased the car August 2024, I have had it for 4 months and while driving down the road a large fuel tank pops up...

#11574021 — February 26, 2024 — The car has revved high rpm's since purchase, with multiple attempts to get it resolved . Since then, the steering wh...

Recent Complaints for the 2021 GMC TERRAIN

#11696797 — CHILD SEAT — October 31, 2025 — The contact owns a 2021 GMC Terrain. The contact received notification of NHTSA Campaign Number: 23V339000 (Child Sea...

#11687881 — ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM) — September 17, 2025 — The contact owns a 2021 GMC Terrain. The contact stated that the transmission was previously replaced. The contact st...

#11687881 — POWER TRAIN — September 17, 2025 — The contact owns a 2021 GMC Terrain. The contact stated that the transmission was previously replaced. The contact st...

#11687881 — SERVICE BRAKES — September 17, 2025 — The contact owns a 2021 GMC Terrain. The contact stated that the transmission was previously replaced. The contact st...

#11678054 — UNKNOWN OR OTHER — August 3, 2025 — Constantly have water leaking into spare tire compartment, back seat floors and passenger floor. Mold/mildew smell co...