For the last 6 months my vehicle has excessive oil consumption 1/4 to 1/2 quart of oil every week. When it starts up it sounds like a diesel engine. In 2019 it did the same using about a 1/2 quart every 3 weeks. We have kept an eye on it ever since as over time it has increased oil consumption and just recently found out this is a problem for many others as well. We have always kept the oil changed when due per mileage sticker and vehicle oil life indicator.

- Waynesburg, OH, USA

My GMC Terrain makes a clunking noise under the hood when I accelerate and go into a lower gear. Does it mostly going up hills but also even on flat road.

- Cannelton, IN, USA

The contact owns a 2014 GMC Terrain. The contact stated while driving at various speeds, the vehicle hesitated while depressing the accelerator. The service engine warning light was illuminated. The contact had taken the vehicle to several independent mechanics and was informed that the catalytic converter needed to be replaced. The contact then took the vehicle to the dealer and it was confirmed that the catalytic converter was defective and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 140,000.

- Yorkville, IL, USA

Car is burning oil excessively and the timing chain is loose putting the vehicle is reduced power mode. The timing chain was replaced at 40,000 miles and now it needs to be replaced again and the car only has 87,000 miles. I bought it with 70,000 miles on it. Someone needs to do a recall on these engines

- Leominster , MA, USA

The timing chain broke while I was driving.

- Cheyenne, WY, USA

The engine is burning oil. Losing oil quickly and no leak.

- Saint Charles, IL, USA

Timing chain actuators diagnosed problem by dealer. Car hesitating, stalling out while driving.

- Hilliard, OH, USA

Driving one day on a beginning winter morning cr had ran perfectly fine and up-to-date on oil changes previously of six months of buying it then car started to automatically shut itself off every two minutes when driving down the road not knowing that the fuel fumes admitted from the engine do not have a large enough outlet causing my main oil seal to burst and blow my intake and there is no guarantee that this will not be fixed after getting repaired due to not being able to modify the original design.

- Hamilton, IL, USA

While driving on the interstate in below freezing weather the low oil pressure light illuminated directing me to stop the vehicle immediately. After waiting 2 hours in freezing temperatures I was able to get vehicle towed to a mechanic and the rear main oil seal had blow out due to a blocked PCV valve. This is a know issue up to 2013 GMC Terrains and mine is 2014. Pictures from the special coverage bulletin 14882 looks like identical part still used in the 2014.

- Rio Rancho, NM, USA

The contact called on behalf of his daughter who owns a 2014 GMC Terrain. The contact stated that while his daughter was driving 60 mph, without warning, the rear main seal fractured causing oil to leak from the vehicle. The vehicle was towed to the residence. The vehicle was not diagnosed nor repaired. The contact, a certified mechanic, inspected the vehicle and noticed the oil leaking from the rear main seal. Tom davis Chevrolet Buick (2831 N 16th St, parsons, ks 67357, (620) 860-0751) was contacted and informed of the failure. The contact was informed that the VIN was not under recall. The manufacturer was notified of the failure however, no further assistance was provided. The failure mileage was approximately 106,000.

- Mound Valley, KS, USA

While driving on highway at approximately 70 mph, on low temperature day (~10), smoke began emitting from bottom of vehicle with pungent smell. The vehicle was immediately pulled over and shut off. There was oil covering the entire undercarriage. The oil was present substantially on the exhaust system, allowing for potential of fire if vehicle continued driving. The rear main seal was leaking and required to be towed home then to dealer at later date for repair. The repair and associated remedies followed tsb 19-na-021 but were not warrantied as the vehicle's VIN did not fall under the associated bulletin's guidelines. All repairs and remedies were identical to previous reported failures of above listed bulletin.

- Stratford, CT, USA

Left my house on a very cold morning (below 10 degrees) and while I was driving and my engine started making a very loud clattering noise. Low power message displayed on the dash and several lights displayed. Nothing prior to the noise. Immediately pulled in and parked my vehicle. I had the codes ran, checked the oil and it had none! the vehicle was checked out and the PCV valve failed/froze causing combustion in the engine and blew out the rear main seal. According to service bulletin 14882 this was an issue on the 2010-2013 GMC Terrains and 2010-2014 Chevrolet equinox (which is basically the same thing) a recall was issued. My vehicle is a 2014 (who's to say when the engine was not built in 2013?) and it doesn't appear the issue was fixed on the 2014S which is going to cost me approximately $3000 to fix. When the rear main seal blew (or started leaking) it coated the whole underside of my vehicle which could have cause me to wreck or catch fire. I had to have my vehicle towed since I was several miles from home.

- Raytown, MO, USA

Car is experiencing oil consumption at a high rate. I looked into his and I guess is very common. And I guess GM won't do anything about it. What do I do now? do I junk it and take a loss as the motor is now making noise. There has got to be something to do.

- Potomac, IL, USA

During cold temperatures (14 degrees) my PCV valve failed to work while sitting at a read light while I was driving home from work on a city street resulting in my rear main seal blowing. This was an issue on the 2010-2013 GMC Terrains and other GM vehicles as noted in the service bulletin 14882. My car is a 2014 and clearly the issue has not been resolved which has cost me nearly $3000 in repairs. Luckily I was close to home but this issue could've left me stranded in below freezing temperatures. This issue also caused oil to leak everywhere and could've resulted in a fire. My car was smoking and smelled as though something was burning.

- Blacklick, OH, USA

The contact owns a 2014 GMC Terrain. The contact stated while driving 35 mph, the vehicle stalled without warning. The vehicle was towed to the local dealer ettleson Buick GMC (6201 South la grange road, hodgkins, il 60525, (708) 529-5871) where it was diagnosed with needing the pvc valve to be replaced. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 91,000.

- Joliet, IL, USA

I bought it in June 2020. Used excessive oil. I kept adding oil. I thought it was an oil leak and took it in to Firestone to get fix. As I was almost there the engine light came on and was making a loud noise under the hood. First warning of anything was wrong, no other lights showed on dash indicating a problem. I was driving when this happened. Firestone said really bad oil leak that damaged timing chain and lower engine. They said I need to replace the engine. Why didn't I get any warning lights indicating there was a problem before my engine was damaged due to excessive oil usage. I see this same issue has happened to other owners with this vehicle. I was driving on the highway and could have been in an accident.

- Rochester, MN, USA

Radio stsyem went out, wiped blade motor defective, cam shaft sensors went out due to oil consumption, sensor actuator went out due to oil consumption, car would die while driving because of oil consumption/cam shaft error, engine is consuming to much oil-per engine oil study done by my dealership.

- Camby, IN, USA

The contact owns a 2014 GMC Terrain. The contact stated that while his wife was driving at an undisclosed speed, the vehicle stalled with the check engine and low oil pressure warning light illuminated. Additionally, there was a message flashing on the instrument panel with a message to turn off the vehicle. The driver pulled over and turned of the vehicle. The vehicle was towed to an independent mechanic to be diagnosed. The contact was informed that the rear main seal was blown due to excessive crankcase pressure. There was also a minimal amount of oil in the engine. The mechanic informed the contact of tsb: 14882 and 19na021. Robert brogden Buick GMC (1500 E. Santa Fe St., olathe, ks 66061 (913)782-1500) was contacted and stated the VIN was not under recall. The contact was informed to tow the vehicle to be diagnosed. The vehicle was repaired at an independent mechanic. The manufacturer was made aware of the failure. The failure mileage was 107,298.

- Spring Hill, KS, USA

Driving from work car was working fine. Came to a stop. Car started sounding like a diesel truck. Next stop car stopped all of a sudden. Towed it home then to the shop. Mechanic asked me when I did the last oil change. Oil change was done at dealership 8 weeks ago. Oil had burned completely and caused the engine to fail. I now need to replace completely. $5K on a 6 year old car with 84K miles.

- Beloit, WI, USA

. in October 2019 my car needed to have extensive work done on its timing chains, variable valve timing solenoids, intake variable engine variable timing solenoid, variable valve timing sprocket, heated oxygen sensor, timing cover gasket set, valve cover gasket set, iridium spark plugs, water pump, engine oil filters, synthetic dexos motor oil, coolant. Then in July 2020 the timing chains collapsed on me while I was on my way home from work. The entire engine had to be replaced. My car was completely totaled after the engine collapsed and I was stuck owing 12000 dollars on a useless car.

- Milwaukee, WI, USA