2010 GMC Terrain engine problems

Filed Apr 21, 2026 · Engine · KS

I bought this car and the mileage said 120K, but the title says when it was tagged 157K. the car has been tampered with and the some of the lights for the car on the dash are missing, such as the check engine light. Also, it misses so bad that it will die at times

Filed Dec 15, 2025 · Engine · 120,000 miles · TX

The contact owns a 2010 GMC Terrain. The contact stated that while driving at an undisclosed speed, the service stabili-trak and check engine warning lights were illuminated. The vehicle was taken to O’Reilly Auto Parts, where it was diagnosed with a misfire in cylinder #3. The vehicle was then towed to an independent mechanic and the contact was informed that there was no compression in cylinder #3. The vehicle was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The vehicle was towed to the dealer, where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. In addition, the contact stated that several oil consumption tests were performed by the dealer over the past three years. The contact stated that after each oil consumption test was performed, the oil pressure was always a quart or more lower when checked; however, the contact was informed that it was not an issue. The manufacturer was not made aware of the failure. The failure mileage was approximately 120,000.

Filed Nov 25, 2024 · Electrical, Engine · CA

Reduce spreed unknown if related to fuel pressure regulator since repaired twice told could be to service bulletin. Warning lights keeps appearing while driving at a speed of 40 to 50 mph.

Filed Jul 3, 2024 · Electrical, Engine · MI

Twice had to have wiring repaired because animals ate the wiring. Both were caused by GM using soy based insulation on wiring that made it a delicacy to the animals and caused them to eat through two wiring harnesses, one of which GM no longer makes. The other complaint is the timing belt has stretched and is now in need of replacement at a cost of $4500 to $5000.

Filed Sep 19, 2022 · Engine · AL

Burning oil and bad engine timing chain

Filed Jun 16, 2022 · Engine · 89,000 miles · HI

The contact owns a 2010 GMC Terrain. The contact stated that while driving at an undisclosed speed, the vehicle experienced a reduction in engine power with the check engine and traction control warning lights illuminated. Additionally, the vehicle intermittently failed to start and the passenger's side rear tire made knocking sounds and lifted up off the roadway while making turns. The contact also stated that the vehicle consumed an excessive amount of oil, causing the contact to refill the oil reservoir every three days. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 89,000. The VIN was unavailable.

Filed May 25, 2022 · Engine, Transmission · 121,000 miles · IL

The contact owns a 2010 GMC Terrain. The contact stated while driving approximately 20 MPH and depressing the acceleration pedal, the vehicle failed to respond. The contact stated the vehicle was restarted several times and the gear shifter was shifted several times before the vehicle started operating as needed. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer to be diagnosed and the contact was informed that the timing chain needed to be replaced. The vehicle was repaired; however, 5 months later the failure reoccurred. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 121,000.

Filed May 15, 2022 · Acceleration, Engine · MA

My 2010 Terrain had been been intermittent dash warnings for “Service StabiliTrac” and “Engine Power Reduced” which would force the engine to reduce the speed itself down to about 30 MPH. After turning off car and restarting, warnings would go away. Yesterday, while driving on a secondary road, with no check engine light on, the engine stalled while traveling at approx 35 MPH. I was able to drop the vehicle into neutral and coast onto a side street, while also attempting to restart the engine. I was able to pull over without causing an accident. After letting the car sit for a few minutes I attempted to restart the engine, but only got a strange noise from the area of the upper cylinders. At his point the check engine light was now on. While waiting for a tow truck, and independent mechanic pulled up to ask if I needed help. After listening to the noice from the upper engine he asked if he could get tools and look in the engine. I said yes. He quickly pulled parts off the upper engine and opened and removed the upper cylinder cover. This revealed that the timing chain had no tension, as well as shards of shattered plastic all over the place, in and around the upper cylinders. After pointing this out he put everything back together and suggested I contact the dealership I got the vehicle from, which I have done already. He then stated that it appears that the engine would need to be replaced or rebuilt, due to catastrophic engine failure. He said my quick thinking of putting the vehicle into neutral probably avoided causing an accident and allowed me to get myself to a safe spot before stopping the vehicle. He also stated that this particular GM motor is known for catastrophic failure, which GM has failed or refused to acknowledge

Filed Dec 22, 2021 · Engine · IL

My terrain recently got the check engine light on the mechanic is telling me that it is the timing chain that all of this vehicles have this problem and I got lucky it only jumped one tooth to repair will cost me around $ 1500 what I don't understand if this is been going on for long time how is it that this does not constitute a recall

Filed Nov 17, 2021 · Engine, Transmission · GA

I bought my 2010 GMC Terrain SLE at 160,000. It had a rough start up but the dealer said it was because it was an older car and been sitting for a while. The rough start up never stopped even after replacing the catalytic converter because of code P0420. The mechanic informed of this specific vehicle oil composition so I was consistently checking the oil. A month after the NEW catalytic converter was installed. I stalled out on the interstate with traffic going 65 mph minimum, the wheel locked and I was almost rear ended. I take the vehicle to an automotive shop and I need a new timing chain with numerous new codes. P0325 P0326 P0327 P0016 P0017 P0014.