One problem related to engine shut off without warning has been reported for the 2015 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Terrain based on all problems reported for the 2015 Terrain.
I purchased my vehicle from a dealer in June 2018, and about a month of purchasing it my vehicle has been hesitating in acceleration, at first I didn't think anything of it, but it started getting worse. Two days ago when I was driving my vehicle in the downtown area (city streets), it was bucking a lot. When I got to my destination and restarted the vehicle, I put it in reverse and proceeded to drive back but the car shuddered and then shut off completely and the malfunction indicator lamp light came on (but it didn't stay on long). Today as I was driving it continued to jerk, especially when I was driving around 20 mph or below (which I had to do because of the school zones). My vehicle shut off again as I began to pull off from dropping my child off at school, which almost caused another parent to crash in the back of me. The only way I could keep the car from shutting off again is by accelerating on the gas above 20 mph.