2014 GMC Terrain power train problems

“Tensioner issues keeps breaking the timing chain. . Replaced twice at own cost. Fuel pump/ loss of power while driving. Back up camera doesn't work sometimes. Screen goes black. If key is left in the ignition it starts itself. If you try to use a car charger for a phone the AC shuts off and a "systems error" message pops up. This happens alot. It's an ongoing issue since I bought the car in Feburary this year.”

“Vehicle is consuming excessive amount of oil in short drive time up to 3qt in less than 1000 miles. With no oil leaks. Vehicle only has 139840 miles. Has regular oil changes and services done.”

“I have a 2014 GMC Terrain with less than 70k miles on the vehicle. I took the truck to the mechanic and was advised the power belts were no good. Why is this? The truck has no mileage on it basically for a 2014, I have a 2011 Chevy with more miles than this truck and its power belts are fine. The Mechanic also advised me within the last 3 years, his shop in Cecil County MD has changed over 125 Power Belts on the 2014 GMC Terrain AWD (V6), same vehicle that I have.”

“On October 13, 2023, I was driving on the highway when my 2014 GMC Terrain power was reduced. Suddenly, the engine light came on and car began throttling. Second, an error message appeared on my dashboard indicating “ engine power is reduced.” Then it stopped in the middle of the highway. I was able to restart my vehicle and drove it to a nearby mechanic shop. The mechanic said the problem was my timing chain and that my vehicle was not drivable. I left my vehicle at the mechanic shop because it was the weekend and It needed it to be towed to the dealership. On Monday, October 16, 2023, I had my vehicle towed to Buick Classic Service Center. After waiting for two days, I received a call from the service center stating that my 2014 GMC Terrain timing chain and pressure gas pump was the cause of the problem - with my vehicle. After, reading other owners similar complaints ; why is there not a recall to address this problem? Now, I am stuck without a vehicle and the company has no idea how long it will take to get the parts needed to fix my vehicle. I was told that the timing chain and a tension is on back order due to the employees of GMC being are on strike.”

“The contact owns a 2014 GMC Terrain. The contact stated that while driving at an undisclosed speed, the vehicle stalled with the check engine warning light illuminated. The vehicle was taken to an independent mechanic who diagnosed that the timing chain was faulty. The failure caused the engine to consume an excessive amount of engine oil. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 97,000.”

“Have a 2014 GMC Terrain SLT AWD. Just rolled 81,000 miles. Heard some catching in what I thought was front left tire while turning right. Almost sounded like wire wrapped up. Looked under car didn’t see anything. Continued to drive and began to hear really loud grinding noise. Could smell the car getting hot. Get it to body shop and they have identified the transfer case was blown out for unknown reason. No fluid and gears are just walking around. Caught it before it locked up. Needs new transfer case, when we can even get one. Looking at about $2500 in repairs. Of course just out of extended warranty. This appears to be a common problem and needs to be addressed by GM!”