GMC Terrain Complaints

3,167 consumer complaints on file.

#11536370August 3, 2023
POWER TRAIN, UNKNOWN OR OTHER
On Aug 3rd 2023 I was driving east on a Michigan Highway when the service transmission warning came across the dash then the car shut off while driving 60mph. When trying to steer the car to the side of the road I noticed the car was in park(this car is equipped with push button shift). The car shutting off made it very hard to steer. If the traffic was heavy this could have caused an accident. I do have a video of this happening
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11536015August 2, 2023
UNKNOWN OR OTHER
April of 2022 I purchased this car brand new. January of 2023 this car started to have a musty/mold smell. I took it into the dealership in late February and inquired if this was a reported problem. I did as they dealership said and replaced the cabin filter. The cabin filter was black at 9,700 miles. It smelled horrible. On April 6, 2023, I took my car into the dealership to resolve this smell. It was discovered that the the cowl inside the firewall on the drivers side firewall had several holes and an incorrectly applied seam. It was also discovered that the drivers side sunroof drain was also disconnected. This was was full of mold. They replaced the entire interior of my car which took until June 28th. I expressed I did not want this car back for fear of mold, I had already been sick and had no idea why. Once I got into a dealer car, I quit coughing. The dealership cannot guarantee me that they got all of the mold in the car, it still has an odor in it. I have went through the claims process with GM and they have refused to buy back my car, based on my claim I am worried about my health. This car had $12,000 in repairs to it. I was promised verbally by the District Manager of After Market Sales that my car would be bought back. They backed out on the deal and told me they cannot buy it back for destruction. I have great concerns about my cars safety with the mold being so large. They cannot guarantee me the mold is completely gone as told me to by the Service Manager. Therefore, this would include the safety of others that travel in my car, to include children and older adults. This problem started in manufacturing and was acknowledged by the dealership as such. It was a defective car when it arrived on the lot.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11535418July 31, 2023
ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11535490July 31, 2023
EXTERIOR LIGHTING
My vehicle had 2 recalls and I took it to the local Chevy dealer where I had purchased the car in 2018. The windshield wiper problem was repaired but I was told they did not have the correct parts to repair the headlights. After 3 days I was told the car was ready and I was assured by the service manager that the car was done. However, the headlights were not repaired..
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11535548July 31, 2023
SERVICE BRAKES
Driving on highway and all of a sudden I could not break - the car breaks failed to operate - had to slowdown by it self and pull to a McDonalds, I had the loss of effective braking with no warning whatsoever. We found out that the Break Booster Pump was destroyed without any warning from the electronics of the SUV.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11534972July 28, 2023
ENGINE, SERVICE BRAKES
Last year this time brakes went out at 50 mph power brake module imploded from inside out. The part was on national back order. Second incident car stopped immediately while traveling 40 mph no warnings or anything both incidents could of been horrible . Not sure on second incident the issue yet car is in shop. Both incidents are safety concerns for myself and others. Driving at average speeds and something malfunctioning is a great concern of mine. I contacted GMC no one to talk too just chat and the person on the other side told me it was no concern of theirs all was dumbfounded by the conversation but until I said I was putting on social media and bringing to everyone attention her entire tune changed in regards to part and service. So I researched locally and luckily I found the part they had one left and I was told by dealer that it is an issue on these vehicles. Both safety incidents have been within a year of each other 2022 and 2023
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11534251July 25, 2023
SERVICE BRAKES
2019 gmc terrain with 45000 miles, regular maintenance performed. Driving on highway 70mps brakes failed with no warning. No issues with brakes or lights coming on up to this point. Brake pedal became stiff very minimal brake working lights began flashing on dash stating "service brake assist". Barely made it off the highway without a catastrophic Collison. Took car in states brake vacuum pump completely failed. Apparently there are many models of gmc/chevy that were recalled and have known issues with the brake vacuum pump. Not sure why the terrain is not included. It needs to be, this was a very dangerous situation. I had children in the car and was very scary! 600$ to repair, and from reading other reviews the pumps are breaking often, sometimes ruining engines. Gmc stand behind your product and fix this!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533758July 22, 2023
UNKNOWN OR OTHER
I was driving approximately 75mph on the interstate. 3 hrs into my trip I started feeling hot so I turned the a/c up. In my peripheral vision I saw orange and thought a car was beside me on fire. Immediately I realized it was my vehicle. I immediately slowed and came to a stop. I put it in park and opened the door. By the time I started to exit there were flames higher than the rear windows. A car that was behind me stopped. They said about a mile back there was a spark under the car by the rear tire. Then it went up in flames.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11533419July 20, 2023
ENGINE
Vehicle's 3.6L engine is consuming excessive amounts of oil. Over 2 QT oil every 2,000 miles. Issue confirmed by GMC certified dealer and independent mechanic. Vehicle showed signs of it at 138,000 miles with independent mechanic. Independent mechanic said to contact GMC customer service. GMC customer service required certified dealer to validate issue. Certified dealership validated issue. GMC not taking responsibility for engine defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533352July 19, 2023
SERVICE BRAKES, ENGINE, POWER TRAIN
The vacuum pump started leaking and the car was parked immediately. When The pump was pulled out to be replaced, the reason for the leak was identified. The vacuum pump had busted into small pieces which are now in the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533121July 18, 2023
POWER TRAIN, ENGINE, SERVICE BRAKES
In July 2022 vacuum pump failed and created a hard brake situation going 55 mph downhill. Vehicle removed from roadway safely, transported and vacuum pump replaced. In May of 2023 vacuum pump again failed driving at around 25mph, vacuum pump failed catastrophically and blew up inside cam cover. Taken to garage via flatbed and reported car needed a new engine or alternatively we could try a new cam and vacuum pump with hopes pieces did not make it into engine. Now vehicle sits while I still owe money as I do not have 3-5000 to repair it. The fact that this is such a common issue and has happened frequently with other GM models is criminal. I feel as if GM should offer a buyback on affected models or reimburse customers for damages done. Vehicle is outside of warranty currently at 83k first vacuum pump failure occurred at around 70k.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532685July 17, 2023
SEATS
The contact owns a 2022 GMC Terrain. The contact stated while adjusting the front driver's side seat, the contact became aware that the seat was not properly secured. There were no warning lights illuminated. The contact called the local dealer and was informed that the driver’s side seat was stripped. The vehicle was repaired. The manufacturer was contacted but no additional assistance was provided. The contact stated that the failure was related to NHTSA Campaign Number: 22V724000 (Seats). The failure mileage was approximately 1,400.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532728July 17, 2023
FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER, ENGINE
My 2020 terrain is now at 33k+ miles, I have had repeated instances with my car not accelerating properly. I would be at a full stop try to start to accelerate and not move push down a little further on accelerator and start crawling forward. I would move approximately quarter mile before the vehicle would jerk and accelerate very quickly to a speed well over where it should go to. I.e. I know because I’m starting in traffic I’m not trying to take off at thirty but when the jerk happens I can be jolted to 40-45 mph. The other issue is people behind you don’t realize what’s going on and I have been hit almost twice thankfully they were able to avoid me by going around. No warning lights have come on. This last insistence not only could I not accelerate, but cruise did not want to turn on, the emergency brake didn’t want to work, and the air conditioner was loosing power. I plan on having an independent service center inspect the vehicle, my husband was able to repeat the issue so I’m sure they will also. The first incident was in May and I have had 5 but thankfully I don’t drive that much.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532789July 17, 2023
POWER TRAIN
Transmission failed. Unable to purchase a replacement as there are no available transmissions for this year terrian.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532516July 15, 2023
ENGINE, UNKNOWN OR OTHER
There's an oil consumption issue that requires you to constantly refill the engine with oil between oil changes. It's so bad that it causes buildup and eventually interferes with the timing. Causing significant, unacceptable repairs! Now I'm forking out money for a constant issue that shouldn't exist! My car cut off in traffic! That's a major safety issue! I will provide costs of repair when I get the final estimate! My timing chain, tensioner and pistons may need to be replaced because of this issue!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11531264July 10, 2023
AIR BAGS
The contact owned a 2019 GMC Terrain. The contact stated that while driving at an undisclosed speed, another vehicle crashed into the passenger side of the contact's vehicle. The air bags deployed; however, metal fragments from the air bag hit the contact's face, causing severe injuries. The contact received medical attention. The vehicle was towed to a tow yard. A police report was filed. The vehicle was deemed totaled by the insurance company. The manufacturer was not made aware of the failure. The failure mileage was approximately 20,000.
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11531130July 9, 2023
FUEL/PROPULSION SYSTEM, POWER TRAIN, STEERING
My husband and son were involved in an almost fatal accident on 07/08/23 in our 2018 Terrain. My husband described that the vehicle spontaneously veered to the right uncontrollably, he was unable to steer to correct the vehicle, unable to brake, they went airborne, hit several poles and a transformer, rolled and flipped several times. All the airbags deployed.After the accident, I found a recall notice from back in 2017, I believe, regarding the drive train. My husband was extricated from the vehicle. My son wasble to cut the seatbelt and crawl out the window. From what my husband explained (he was the driver), this sounds like what they experienced during the collision. I never received a recall letter from GM as this is something I would of taken care of and have got repaired. Please see the photos and the recall I found. Please let me know if there is anyone else I need to contact regarsing this collision.My car was almost paid off. My husband and son could of lost their life. Please advise. Thank you!
Crash:
Yes
Fire:
No
Injuries:
2
Deaths:
0
#11531074July 8, 2023
EXTERIOR LIGHTING, SERVICE BRAKES
When parked in home driveway brake lights came on with no one in car or driven during the day. Only way to turn off brake is to remote start & then cut off engine with Fob. Dealer diagnostic unable to find issue & condition didn't occur when at their location.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11530810July 7, 2023
ENGINE
I was driving my vehicle down the road and the vehicle just shut off. This was dangerous and could have cost my son and I our lives. I have spoken with many mechanics and they state that this car has issues with oil consumption This model vehicle has been reported to have a major oil consumption issues. The oil is dissolved within the engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11530431July 5, 2023
VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR
The contact owns a 2012 GMC Terrain. The contact stated while driving 65 MPH in rain weather, the front windshield wipers stopped functioning. There was no warning light illuminated. The contact attempted to deactivate and activate the windshield wipers however, the wiper blades failed to operate. The vehicle was taken to an independent mechanic and the contact was informed that the windshield wiper motor needed to be replaced. The vehicle was repaired. The dealer was not contacted. The manufacturer was not notified of the failure. The approximate failure mileage was 152,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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