GMC Terrain Complaints

3,167 consumer complaints on file.

#11502202January 17, 2023
ENGINE
The contact owns a 2016 GMC Terrain. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. The oil warning light was illuminated, and an unknown message was displayed. The vehicle was towed to an independent mechanic, who diagnosed that the lower engine seal and bearing were faulty. The mechanic determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 92,600. The VIN was unavailable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11502291January 17, 2023
POWER TRAIN
Was driving on a highway on cruise control When it automatically disengaged by itself When I stepped on the gas the car began to shake violently, And it was not shifting years correctly. I was able to pull over and realize that the transmission Was a problem so I was able to drive manually to local dealer who diagnosed the problem as needing a new transmission. The vehicle is 2017 and has less than 63000 miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11502049January 16, 2023
ELECTRICAL SYSTEM, ENGINE
The vehicle has been having misfires and power liftgate since owning the vehicle. The vehicle has been to multiple dealerships and I have to this very day put 15k miles on the vehicle. Needless to say GM has not been any help in getting the problem taken care of. I have sent GM video of the vehicle misfire. I finally have conformation that the vehicle has had 53 misfires.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501917January 15, 2023
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
The emergency breaking system failed to engage. Failure to engage caused collision with another car
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11501918January 15, 2023
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, LANE DEPARTURE: BLIND SPOT DETECTION, BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
None of these features have ever worked
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501427January 12, 2023
SEAT BELTS
Driver seat belt exhibits signs of fraying in area of belt hidden from view when not in use. When extended, hair-like fibers extend out, primarily from the car-forward side of the belt in the area coming out of the B-pillar and from behind the trim. It is available for inspection. Concerned that this may continue to degrade the integrity of the seat belt over time. There could be something sharp in the retractor, or flash on a piece of plastic trim hidden from view causing this. My understanding is that if there is a small nick on the edge of a safety belt it can tear across, and concerned that this condition could lead to a similar outcome over time and if the vehicle were involved in an accident. Upon taking to local dealership, was advised that this is a normal condition and not a concern. Advisor said technician told him that it is not fraying, it is a normal condition that can be exhibited by the belt fibers, especially towards the edges. They said the central portion of the belt is not exhibiting a similar condition and therefore not a concern. The fibers seem to have grown in quantity since vehicle purchase. I first recall seeing them during the pandemic, although became more concerned over time and finally took in prior to warranty expiration for review.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501470January 12, 2023
ENGINE
The contact owns a 2015 GMC Terrain. The contact stated while driving approximately 30 MPH, the vehicle started jerking, lost motive power, and stalled. There was no warning light illuminated. The vehicle was restarted, and the contact continued to drive; however, the failure persisted. The contact stated that the “Engine Power Reduced” message was displayed. The vehicle was towed to the local dealer where it was diagnosed that the timing chain had fractured. The vehicle was not repaired. The manufacturer was contacted and informed of the failure but provided no additional assistance. The approximate failure mileage was 120,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501195January 11, 2023
ENGINE
The contact owns a 2012 GMC Terrain. The contact stated while driving 25 MPH, the vehicle started hesitating and then stalled. The contact stated that the check engine warning light was illuminated. The contact was able to restart the vehicle and drove to an independent mechanic. The independent mechanic added 2-quarts of engine oil to the vehicle. The vehicle was repaired. The contact stated that later that evening her son notified her of an oil leak nearby the rear of the vehicle. The contact took the vehicle to another independent mechanic where it was diagnosed with needing the rear main seal to be replaced. The vehicle was not repaired. The contact called the local dealer and made them aware of the failure. The manufacturer had been informed of the failure. The failure mileage was approximately 101,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501014January 10, 2023
STRUCTURE:FRAME AND MEMBERS
The contact owns a 2013 GMC Terrain. The contact stated that the vehicle was taken to be inspected however, the contact was informed that the vehicle could not be inspected due to the frame, rocker panel, rear bumper support, and the e-brake cable mounting bracket being extremely corroded. The contact was informed that the parts needed to be replaced before the inspection was completed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 91,276.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11501036January 10, 2023
SEAT BELTS
The front passenger seat belt locks on passenger and will not release unless it is completely unbuckled. It keeps doing this for no reason. This was brought to dealer’s attention one to two years ago and they said I would have to pay cost of repair since warranty was off even though I purchased an extended warranty with this vehicle. The service department claims to have taken it apart and cleaned it but could not find problem. The problem is bad since passenger has to unbuckle belt multiple times during a trip.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11500908January 9, 2023
ENGINE
As I was driving on December 24, 2022, (the temperature outside was 7 degrees).I heard my vehicle making a funny sound. I pulled over to a safe location then my truck cut off by itself. I got out of my truck and noticed that oil was on the back of the rear tire wall and on the ground. I had to get it towed to a repair shop. They told me a couple days later that the PCV valve was gone and that caused the rear main seal to go bad. Several days later, I happen to see a recall on YouTube about the PCV valve that GMC had issued back in March 2015, but I never received a letter through the mail. To get this fixed it’s gonna cause me a lot of money. Unless GMC is willing to pay for it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11500437January 6, 2023
ENGINE
On December 26, 2022, my son and I were on our way to Indianapolis, Indiana from Anderson, Indiana. When we were about to the end of going through Ingalls, I noticed that my check engine light went off. I pulled over within 3 to 5 miles within notification of my engine light going off at a gas station. I turned off my Terrain, so my son could look under the hood to see if anything was amiss and I turned my Terrain back on hoping that the check engine light would go off. It didn't and the engine sounded normal. We proceeded to go on to Indianapolis driving on. Everything was fine until right before we reached 30th and German Church Rd. I started hearing what I thought was a clicking/ticking sound, so I turned off my radio to confirm it. As I turned down the radio to confirm the sound, my dashboard let me know that my engine was losing power and a stabilitrack warning. I immediately pulled over to check to see if my serpentine belt broke. It hadn't. My oil read at 29% and no other lights were on besides the check engine light. NOTHING letting me know that I was losing oil. A friend of mine came to listen to it and thought maybe my alternator was going out. I attempted to drive it to a garage that was maybe at most 2 miles away. It started right back up but lost power again less than a block away from where I stopped. I pulled it into a parking lot to get it off the street. I had it towed from the parking lot to a garage to have it looked at and I was shocked to find out that I was out of oil even though the dash read 29% before needing another oil change. NO OTHER WARNING that I was losing oil. The mechanic notified me to let me know that I had a blown engine. I'm furious with GMC right now because I had overheard approximately a couple months ago while getting my oil changed that GMC engines were going out left and right and now it's happened. to me. I don't even want to think about what could have happened to my son and I if on the interstate being very short notice
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11500269January 5, 2023
ENGINE, UNKNOWN OR OTHER, POWER TRAIN
The rear main seal is out, which is causing an oil leak. The intake manifold failed because the pvc system has a clog which has caused too much pressure to build up and caused the rear main seal to blow out. (PVC pipe is freezing over in cold temperatures which causes the failure of the main seal to blow out subsequently leading to additional major issues and parts failure. This issue has occurred in an overwhelming amount of vehicles.)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11500119January 4, 2023
ENGINE
I just purchased this vehicle about 2 weeks ago, and was driving through the fog/cold weather and my check engine light came on. Went to O'Reillys and had them check the code. Came up as P0299 (My car was telling me that the engine power was decreased) I had a loss of power I could feel while driving as well. The code said turbo under boost. After I got back into town and the weather was warmer and no fog was present, the turbo started working again. I brought my vehicle into the dealer where I bought it from and they took it to their mechanic and supposedly performed an "update". I will see if I continue to have the same issue in cold weather as I live in Idaho and go to the mountains often.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11500178January 4, 2023
ENGINE, UNKNOWN OR OTHER
I was driving my 2013 GMC Terrain to a friends house, I stopped at a stop light, when I picked up speed, the car stalled and wouldn't get up to speed. Eventually, it did pick up speed. I went to turn into her neighborhood and the same thing happened. Trying to get to the destination, I continued into the neighborhood. I stopped at a stop sign, and when I tried to accelerate, the car died. No indicator lights were engaged. I turned the car off and waited a minute or so and turned it back on. I got to her house, and charged my battery and drove home without issue. The next day, I went to have my battery checked and they alerted me to a horrible oil leak. I had the car towed to the dealership. The next day, the dealership told me that GMC would specifically have to look at the vehicle to diagnose. I had the car towed to my trusted mechanic and he told me the rear main oil seal blew out and found a service bulletin regarding this issue #14882. I made an appointment with the dealership only to find out that this isn't covered under the bulletin, because it expired in November of 2022, and it's not covered under my warranty. The warranty company stated, "if there isn't evidence of moisture in the PCV it would be covered, but since it's a known issue and a consistent problem with the vehicle, it's not covered." So, my only choice is to pay out of pocket for a defective part that will continue to break and cause the rear main oil seal to blow out of the car, potentially putting me and my 9 year old daughter at risk, because GMC isn't acknowledging this issue and recalling the faulty part that is the ROOT of the problem and has been widely reported. There is also a class action lawsuit that is currently open and ongoing (Case 2:22-cv-10785-MAG-JJCG) which is trying to hold GMC responsible for not recalling the part sooner - when they were made aware of it - putting thousands of consumers at risk. It's also fraudulent for this information to not be disclosed at point of sale.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11500229January 4, 2023
ENGINE
Vehicle stopped running due to timing chain issues at 106,000 miles. Dealer stated the 3.6L V6 is known to not last past 100k miles and they can't do anything. This needs to be a recall as it's a very prevalent problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11499890January 3, 2023
SERVICE BRAKES, ENGINE
I was coming to a stop with my vehicle and the brakes would not work. I carefully got my car home and to a shop. It was determined that the break booster pump broke which caused metal parts to go into the engine. Now my engine is blown! Bought my car brand new in 2018 and kept up with regular vehicle maintenance has 90k miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11499915January 3, 2023
ENGINE
Pulling into work parking lot on Saturday 31Dec2022, my engine died, thinking it was the alternator or the starter, had it towed to a repair shop. Didn’t find out until Monday, 2Jan2023, that the engine completely locked up. The rear seal blew out and drained all the oil. I have been reading up on this and apparently this is reoccurring thing in said make and model of 2017. GMC and GM have to put out a recall on these vehicles with this manufacturing error/problem. Now I have to get a new goddamn vehicle because I cannot afford to get the engine replaced, which costs around $7000. End of message.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11499925January 3, 2023
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
2017 gmc Terrain. vin -[XXX] on 12-26-2023 milage - 80694 Catastrophic failure involving PCV Valve and blown seal that destroyed the motor. So ...why or even how are we discussing rear main Seal. This is COMPLETELY UNACCEPTA,BLE. I have 2 kids starting to drive the repair estimate is $8.000 to $10.000 INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11499615December 31, 2022
SERVICE BRAKES, UNKNOWN OR OTHER
My service brake assist light came on and then within seconds my vehicle then said engine power has been lowered and my vehicle pretty much shut down no steering no brakes couldn't do anything. Took it into the repair shop and my vacuum pump has shattered and now damaged my camshaft. I am aware there's been many other vehicles recalled with GM's vacuum pumps and I'm not sure why my year and model has not been included when it's doing the same thing and not to mention I have seen countless other cases of people saying same things happen to them with their GMC terrains.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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