GMC Terrain owners have reported 323 electrical system related problems since 1996. Table 1 shows the 25 most common electrical system problems. The number one most common problem is related to the vehicle's electrical system (279 problems). The second most common problem is related to the vehicle's car will not start (8 problems). For details of each of the problem category, use the links in the table.
Break assist light comes on and brakes stiffen suddenly with no warning. Happened 6 times now in a 3 year span. Gotten it "fixed" each time but it keeps happening Read details...
I was out of town and had gone to the store and when I got back in my vehicle and it would not start. After, letting it sit for 4 hours it finally cranked up. The battery and fuses were fine. No lights came in on my dash as a warning that something was wrong. This has happened to me before. Read details...
Wiring harness not weather sealed n shorted out after dealer washed car on delivery Read details...
I purchased my 2012 GMC Terrain from clay cooley in irving, TX on 01/05/2015 with an extended service contract. I have had issues with this vehicle ever since. I took the vehicle in for service and was told the service contract would not cover my issue and that the issue was caused by lack of Read details...
Radio stsyem went out, wiped blade motor defective, cam shaft sensors went out due to oil consumption, sensor actuator went out due to oil consumption, car would die while driving because of oil consumption/cam shaft error, engine is consuming to much oil-per engine oil study done by my dealership. Read details...