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8 complaints
GMC TERRAIN 2024 POWER TRAIN
low
I bought my car in July of 2025 and since then my car keeps derating and reducing engine power while driving down the road at 70 miles an hour. It cuts out and decreases power. I took my car to the sh
NHTSAUSMar 2026Source →
GMC TERRAIN 2024 UNKNOWN OR OTHER
low
While driving several times smelt gas and car cut out engine came on and car stopped mid driving multiple times. Says they replaced fuel pump reset car etc
NHTSAUSFeb 2026Source →
GMC TERRAIN 2024 FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
medium
This is a continuation for NHTSA campaign number 11711615. While an additional NHTSA complaint has been filed for the power train, this focuses specifically on design failures in the braking system. O
NHTSAUSJan 2026Source →
GMC TERRAIN 2024 FUEL/PROPULSION SYSTEM
medium
On January 16, 2026 our 2024 GMC Terrain Denali experienced complete loss of power. The car was unmovable from the road, unable to shift into neutral, and unable to release the braking system in addit
NHTSAUSJan 2026Source →
GMC TERRAIN 2024 POWER TRAIN
medium
Powertrain System failure while driving, causing complete loss of power on road. The car lacks any accessible manual overrides to put in neutral or turn off parking break. This leaves the car stuck in
NHTSAUSJan 2026Source →
GMC TERRAIN 2024 FORWARD COLLISION AVOIDANCE: WARNINGS
low
My wife and I took our new vehicle on a 7k mile road trip this summer. Two times while on the freeway around 70 MPH, the sensors went wild. The cars auto break came on and red lights and collision war
NHTSAUSJul 2025Source →
GMC TERRAIN 2024 FUEL/PROPULSION SYSTEM
low
FUEL PUMP WENT OUT AT 42K MILES.
NHTSAUSJun 2025Source →
GMC TERRAIN 2024 AIR BAGS
medium
The contact owns a 2024 GMC Terrain. The contact stated that while driving at an undisclosed speed, the "Service Vehicle Soon" message was displayed, and the air bag warning light was intermittently i
NHTSAUSApr 2025Source →