Forward Collision Avoidance Related Problems of the 2018 GMC Terrain

Table 1 shows three common forward collision avoidance related problems of the 2018 GMC Terrain. The number one most common problem is related to the automatic emergency braking (three problems). The second most common problem is related to the warnings (three problems).

Table 1. Forward Collision Avoidance related problems of GMC Terrain


Recently reported Forward Collision Avoidance problems of the 2018 GMC Terrain

The Automatic Emergency Braking problem

On 9/3/23 I was travelling down interstate 94 in illinois when all of a sudden my check engine light came on. Not knowing what the issue was, but knowing that the car still seemed to be ok and I was only a few miles from home I decided to drive home and figure out the issue from there.   Read details...

The Warnings problem

It starts to “warn” you by the seat doing whatever it does and the dash lights up collision flashing and slams on the brakes when nothing is even around   Read details...

The Adaptive Cruise Control problem

Car is losing go power when accelerating on to interstate. It’s like the transmission loses power, the d illuminates, and then it kicks in to drive. It puts us at risk for an accident and I had a semi almost hit me because of this. This has been reproduced at the mechanic shop as well.   Read details...


Forward Collision Avoidance related problems in other GMC Terrain model year vehicles:



Terrain Service Bulletins
Terrain Safety Recalls
Terrain Defect Investigations