Four problems related to engine shut off without warning have been reported for the 2012 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 GMC Terrain based on all problems reported for the 2012 Terrain.
Vehicle began to use excessive amount of oil and idel up and down and sometimes even shuts down. After about 3 months while driving on the interstate it began to shut down while in motion. I called for someone to check the vehicle out and he arrived called someone to check the vehicle and he actually told me it seems to be the motor gone bad but he asked would I drive it back home if he followed behind. It literally scared me and my 4 children to death when it shut down while in motion with that kind of speed so I don't trust putting my children in it now. I don't think its safe at all. The vehicle I once thought was perfect for my family is turning out to be a nightmare.
Vehicle shuts off when slowing to a stop and have to restart in order to accelerate. That was looked at and �fixed� and now the vehicle shakes when slowing down and headlights dim as if it is trying not to shut off. Engine is very rough and rattles while starting to accelerate and accelerating. When brakes are pushed the car starts to turn off while in motion. When stopped, car shakes and there is a very hard knocking coming from the engine.
I was driving my 2012 GMC Terrain and as soon as I slowed down or stopped my car would shut off and I would have to try to restart it. Fortunately, I made it home without having to stop. As I was turning in my driveway it shut off again. Onstar suggests it may be a timing issue. Help! I took it to the dealership to get a new battery and when I got my car back the fuel sensor was not working. It was working before they got it and GMC collierville refused to fix it. I can't afford all these major repairs and will not by another if GMC does not resolve the consumer's issues.
Tl the contact owns a 2012 GMC Terrain. When the vehicle was started, the engine began to rumble and quiver. While in drive, the rumbling in the engine persisted and the vehicle shut off while stopped. The contact was able to restart the vehicle once it shut off. The vehicle was taken to schepel Buick GMC (3209 w Lincoln hwy, merrillville, in 46410, (219) 488-9836) where it was diagnosed that the timing chain actuators failed. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was approximately 93,000.