GMC Terrain owners have reported 23 lane departure related problems since 1996. Table 1 shows the 3 most common lane departure problems. The number one most common problem is related to the vehicle's blind spot detection (17 problems). The second most common problem is related to the vehicle's assist (3 problems). For details of each of the problem category, use the links in the table.
| Problem Category | Number of Problems |
|---|---|
| Blind Spot Detection problems | |
| Assist problems | |
| Warning problems |
The engine light came on while driving, saying “engine power reduced”. It barely accelerates, rpms go over 5, it chugs when driving. Taken to an independent service center. Read details...
A failing telematics module on your 2026 GMC Terrain is causing network corruption, leading to an erratic speedometer and loss of driver assistance systems while driving. Read details...
Two issues here. First is that the car will give a danger warning when nothing is there. Sometimes goes as far as slamming on my breaks. Both in drive and reverse. Second is the lane keep assist. It’s like it is working backwards. Read details...