2017 GMC TERRAIN Complaints

The contact owns a 2017 GMC Terrain. The contact stated while driving at approximately 40 MPH, the check engine warning light illuminated, and the vehicle failed to remain idling. The vehicle was driven to the residence and parked. The vehicle was not able to be restarted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the issue. The failure mileage was 79,500.

We have had many GM vehicles my husband worked at GM retired now. Our complaint is we have a GMC Denali 2017 only 79000 miles on it. All upto date changes regularly all. Other like Transmission oil changed all upkeep to date. Transmission needs rebuilt. We are in our 80’s And don’t beat up our cars. Replace or rebuild transmission 3500 to 4500 bucks. That is a lot of money for us. No longer covered. It shudders when you drive at any speed and feels so unsafe. Took it to GM garage and they couldn’t find anything wrong. No warning lights came on and we paid over 150 to have it checked out so with the shuddering getting worse and not feeling safe to drive we took it to a Transmission shop and he took it out and said the Shuddering was caused by something in the transmission. I have seen on google where GM is having a lot of problems in this area. We just need help with the repairs. Thank you. A retired GM worker Lordstown, Ohio [XXX]. Retired 1999 [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

I was on the interstate, heading out of town. I heard a loud noise from under the car. The car started slowing down and would not accelerate. This could have been very dangerous if I had been in the middle of 5:00 traffic. I took the next exit in front of me and pulled into a gas station. Looked under car and seen no obvious damage. Got back in and the car and put it back into drive. It would barely pull and then quick pulling all together within a few feet. The D/drive light started flashing. No warnings at all before this happened. I was 200 miles away and had to have it towed back home. Put it in the GMC shop and was told it needed a transmission.

The engine burns oils twice as fast as it should and gives no warning of a problem. I am 3 years into payments on this vehicle and the engine is shot due to this issue. I have under 80,000 miles but this is a major problem that GMC is not addressing its very frustrating I will have to pay off a damage car they sold and now buy a new for an obvious problem they won’t acknowledge

Due to cold weather the PCV froze which caused pressure to build up in the vehicle’s crankcase which caused the rear main engine seal to pop out. Results in losing all engine oil without and warning driving down the highway. I was lucky enough to get off the highway but currently without a vehicle due to possible engine damage

In 10 degree weather after warming the car up and driving 15 miles began noticing exhaust smell but wasn't sure it was my car. No warning lights. Arrived at destination parking lot and car began to run rough and stall out and only then did engine light and oil pressure light come on. Strong exhaust/gas smell. Stranded in frigid weather with passenger in a wheelchair. Had car towed to dealer- pvc port plugged causing oil pressure to blow out rear main seal losing all oil causing damage to the engine and components. Warning lights did not come on until damage was done. Discovered it was a known issue with this engine and class action lawsuit has been filed. Was fortunate we were not on the road when this happened.

The contact owns a 2017 GMC Terrain. The contact stated while driving 5 MPH and merging into traffic, the vehicle stalled. The contact stated that the check engine warning light was illuminated. The vehicle was not drivable. The contact towed the vehicle to an independent mechanic and was informed that the timing chain had fractured, and the engine needed to be replaced. The vehicle was not repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 79,000.

Vehicle has 37,000 on it and the timing belt/chain is bad causing value problems.

They’re a class action law suit going on now, about the pcv orifice on my car. This is what happened with my car the pcv orifice clogged and frozen then causing my rear main seal to break and loose oil. No oil lights come on when the car is low on oil. Also even if you fix the pcv orifice it could still happen again.. which means it could leave me and my young daughter stranded on the side of a road hi way or interstate and I’m not comfortable with this and the car dealership needs to get a permanent fix so this doesn’t happen repeatedly… I don’t even feel comfortable driving the car anywhere I’m afraid I will be left on the side of the road.

Car died out of nowhere. Towed to dealership. Upon inspection we were told that the engine needs to be replaced. Had a 3rd party come to investigate and gave a diagnostic report. GM has notices and there are articles outlining the defect/failure of the engine due to excessive oil consumption and issues with PCV and rear main seal.