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12 complaints
GMC TERRAIN 2023 UNKNOWN OR OTHER
low
I have had 2 different instances where my vehicle stops in the middle of a busy intersection or traffic and have no warning what so ever. Vehicle just shuts off and I am not able to turn back on to mo
NHTSAUSMay 2026Source →
GMC TERRAIN 2023 UNKNOWN OR OTHER
medium
Car reduced speed and the smell of gas filled the car. Car shut off. Check engine light came on with reduced speed. This is the second time this has happened. Gas leaked onto ground from car. Car stal
NHTSAUSMay 2026Source →
GMC TERRAIN 2023 UNKNOWN OR OTHER
medium
Took dealer 3/26 for Sam issue Engine Power reduced after already cause me hit curb. Got it out 4/1/26 Now 4/5/26 it happened again same codes after they claimed they fixed it. Also keep having Emerge
NHTSAUSApr 2026Source →
GMC TERRAIN 2023 POWER TRAIN
medium
Took dealer 3/26 for Sam issue Engine Power reduced after already cause me hit curb. Got it out 4/1/26 Now 4/5/26 it happened again same codes after they claimed they fixed it. Also keep having Emerge
NHTSAUSApr 2026Source →
GMC TERRAIN 2023 POWER TRAIN
medium
The contact owns a 2023 GMC Terrain. The contact was informed by his wife that while attempting to accelerate from being stationary, the vehicle was shaking abnormally and hesitated before acceleratin
NHTSAUSMar 2026Source →
GMC TERRAIN 2023 UNKNOWN OR OTHER
medium
Complete engine failure @100,600 miles Engine power reduced and lost compression transmission module failure Will not exceed 20mph
NHTSAUSJan 2026Source →
GMC TERRAIN 2023 ENGINE
medium
The high pressure fuel pump, the car randomly goes into limp mode and stalls and then when cranking it back up in the middle of 635 it hesitates to start, done this 3 times already
NHTSAUSJan 2026Source →
GMC TERRAIN 2023 FUEL/PROPULSION SYSTEM
low
I was driving the vehicle on the highway the cruise control was on. All of a sudden I got a warning on vehicle info panel that stated vehicle power is reduced. The vehicle decelerated on its own and I
NHTSAUSOct 2025Source →
GMC TERRAIN 2023 FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS
medium
The contact owns a 2023 GMC Terrain. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated and the engine stalled. The contact attempted to drive the veh
NHTSAUSOct 2025Source →
GMC TERRAIN 2023 FUEL/PROPULSION SYSTEM
medium
While driving the fuel pump failed and started spraying gas everywhere in the engine compartment.
NHTSAUSAug 2025Source →
GMC TERRAIN 2023 LANE DEPARTURE: ASSIST
high
My son was making a left onto a freeway on ramp after traffic cleared and the steering wheel completely locked up resulting in him going over the curb and rolling completely over in a steep ditch. Thi
NHTSAUSJun 2025Source →
GMC TERRAIN 2023 ENGINE
medium
The contact owns a 2023 GMC Terrain. The contact stated while driving 15 MPH, the message "Engine Power Reduced” was displayed on the instrument panel. The contact stated that the vehicle the lost m
NHTSAUSJun 2025Source →