Warnings Problems of GMC Terrain

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. I turned this all off because it would jerk me out of the lane and into the other lane or off to the sides of the road.

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.

See all problems of the 2018 GMC Terrain 🔎.

Top of roof pops when you shut car door, leaking either transmission fluid or oil, left turn signal doesn't stay engaged when turning, side mirror warning lights randomly go off when no car is around. Car is not shifting correctly when driving.

See all problems of the 2025 GMC Terrain 🔎.

My Terrain has a light that has been coming on for a couple months. Service brake assist. I took it to the dealer after my brakes locked up and about $800 after getting it fixed the light continues to come on. The forward collision light comes on every time I start the car. More the check engine light came on and says engine electrical system. What the heck is going on? I love this car and take very good care of it but I feel like the $800 that I just spent was a waste. I fear that I will get in a wreck like when the brakes totally locked up and I couldn't press on them.

See all problems of the 2020 GMC Terrain 🔎.

No warnings of any kind went off; I wasn’t even going 2 m. P. H. And hit a piece of wood that was right on the edge of the grass next to the road at the park. This is dangerous, especially at a park or other places where smaller children are present if I get that close to something and the none of the sensors go off letting me know there is something/someone that my vehicle could strike if not careful. I have not had it looked at yet, but plan to. No warnings of any kind have went off and it was functioning properly prior to this. There is severe damage to my vehicle.

See all problems of the 2023 GMC Terrain 🔎.

The headliner fabric detached somehow from the panoramic track causing the fabric to hang down obstructing the rear and back window view causing a safety hazard. The automatic forward collision alert will come on for no reason since this has happened. The problem has not been reported to insurance or the manufacturer yet but gm is my next call. This is a safety hazard due to the obstruction of visibility to safely make turns or change lanes. This happened August 5th while driving with the windows up. It just dropped down still attached to the front of the track and the rear.

I was in a car accident.

Brakes got hard all of a sudden locked up, almost hit another car, front collision warning keeps going off and automatically hitting brakes with no one in front of me. I’ve read it could vacuum brake pump failure. Please recall this as many people have kids and could hurt them.

See all problems of the 2019 GMC Terrain 🔎.

I was backing out of a parking spot when I came in contact with a vehicle going east bound in the parking lot the contact was on the rear right side of my vehicle before I could do anything my vehicle sped up and proceeded to go forward jump a curb I had my foot on the brakes when I realized I wasn’t stopping and heading for a garage I turned right trying to avoid the garage but still hit the corner of garage causing damage then vehicle stopped and shut down. The vehicle is still being repaired the mechanic said there was damage to a box and cable going to transmission but couldn’t say if it was the fault reported to police end insurance but haven’t gotten any response reported it to general motors but haven’t gotten a response.

See all problems of the 2021 GMC Terrain 🔎.

Mientras conducía el panel DE instrumento digital donde están los relojes se apagó en su totalidad. El auto siguió funcionando pero no podía ver nada en el panel porque estaba literalmente muerto. Me moví hacia un costado DE la carretera y apagué el carro. Lo volví a prender pero el panel siguió muerto. El carro si trabajaba. Llegue con mucho temor a casa y lo envié al concesionario donde lo compré. Me dijeron que era el panel DE instrumentos y que lo tenían que cambiar.

See all problems of the 2022 GMC Terrain 🔎.