Table 1 shows three common exterior lighting related problems of the 2012 GMC Terrain. The number one most common problem is related to the exterior lighting (nine problems). The second most common problem is related to the headlights (one problem).
| Problem Category | Number of Problems |
|---|---|
| Exterior Lighting problems | |
| Headlights problems | |
| Tail Light Switch problems |
My 4 cyl. Awd GMC Terrain has had excessive oil use which caused premature failure of the timing chain, loss of power/compression, blown engine, damage to exhaust manifold, cellinoids, and melted the catalytic converter. Its was a road safety, poor emissions due to failed catalytic converter. Read details...
The headlight system on this vehicle leaves a lot to be desired. The headlights are veiled somehow so that there is no illumination above the headlights with low beam. When driving in hilly areas, the forward projection of the headlights is very limited when traveling down hill. Read details...
My 2012 Terrain is getting water in the rear left tail light. I was told that it was a vented tail light and the vent was blocked by dirt and debris and they would have to replace the taillight and replace both seals. Read details...