GMC Terrain Complaints

3,167 consumer complaints on file.

#11580083March 29, 2024
ENGINE, UNKNOWN OR OTHER, SERVICE BRAKES
While driving on 95, I lost all engine and power breaks with no warning. A message came up on my dash stating that I had lost engine power. Fortunately an exit was up ahead so I was able to get there and coast down the ramp. I attempted to make a right turn to get out of the way but ran out of momentum. Dealership stated my vacuum break pump failed and went into the cam shaft. They had to replace those and the solenoid actuator and value. They also conducted an oil change. I received it back yesterday, started the car today and the check engine light was on. They found more debris and replaced another point and said if the light comes on again it's the timing chains in the engine. I went out leave and the check engine light was on. They are now keeping it to repair the timing chains. I am fighting with GM to cover the expenses since I see this is an issue in previous models/years of GMC and Chevy vehicles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11580131March 29, 2024
ENGINE, POWER TRAIN
While driving the vehicle which only has 68,000 miles the reduced engine power warning light appeared. As quickly as was safe the car was pulled to the shoulder. It was towed to the dealer who states the Vacuum pump seized causing the camshaft phase actuator locating pin to spin. Originally they stated a new camshaft and vacuum pump were needed at $3,500, but now state the entire engine is damaged and must be replaced at cost of $12,000. The vehicle was well serviced and this manufacturing flaw lead to the vehicle be stopped on the road putting both the occupants and others around at risk.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11578892March 22, 2024
ENGINE
My car was driving without issue until I stopped at a street light. My car started rocking front to back while sitting at the light and every other time I had to make a stop. The engine light came on. I had the vehicle towed to an auto shop where they confirmed that the timing chain broke. Due to this my engine was damaged to no repair. I would need to replace it. My gmc terrain is a 2017 with only 99,000 miles. I further learned that GM is aware of this issue but failed to recall this issue or warn owners that we were at risk. This can cause a vehicle to stop in the middle of driving which could cause a death if in the wrong place.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11578481March 20, 2024
POWER TRAIN
The contact owns a 2012 GMC Terrain. The contact stated that while driving at 65 MPH, the vehicle inadvertently lost all motive power. The contact was able to pull to the shoulder of the roadway, where the vehicle was able to restart, but failure persisted. The traction control warning light was illuminated. The vehicle was towed to an independent mechanic, who was able to diagnose the failure, but the contact was unable to recall the specifics. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11578056March 18, 2024
SERVICE BRAKES
Vacuum pump failure which leads to total engine repair
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11578063March 18, 2024
ENGINE
hello i'm writing you today in concern of my 2012 chevy terrian i have had all the recalls done on this car and still have problems with the motor this car has a new timing chain in it and still uses oil the recall for the o2 sensors i have had fixed now the light is back on and now the complete system is bad from my understanding this is a well known problem with these cars when you spend that kind of money on a vehicle you wouldn't think there would be the same problem that was just fixed i'm writing you now my engine light is on again and it's the o2 sensor that i had just replaced under the recall i don't feel i should have to pay to have this known problem fixed now.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11576781March 12, 2024
ELECTRICAL SYSTEM, ELECTRICAL SYSTEM:WIRING, ENGINE
See attached document for complaint
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11576994March 12, 2024
FUEL SYSTEM, GASOLINE
The contact owns a 2015 GMC Terrain. The contact stated that while driving at an undisclosed speed and coming to a complete stop, the accelerator pedal was released, and the vehicle sputtered. The check engine warning light was illuminated. The message "Reduced Engine Power" was displayed. Additionally, the contact stated that the vehicle would shut off while idling unless the accelerator pedal was intermittently depressed. The contact also stated that the vehicle had failed to respond while depressing the accelerator pedal. The vehicle was taken to Firestone on several occasions, and the high-pressure fuel pump (HPFP) was replaced 3 times; however, the failure persisted. The vehicle was not repaired. The dealer was not notified of the failure. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 130,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11575231March 4, 2024
SERVICE BRAKES
This Saturday morning driving my family to Bradenton as I was coming off the hwy to my exit when I experienced a brake fail I thought, brakes got real hard and I couldn't stop the car on time like I wanted to, so I had to press the brakes pedal harder to come to a complete stop, three different places no one knew what could be the problem until I took it to GMC dealership they can only give a code P0556 / U0401 SERVICE BRAKE ASSIST, seems it was too late to checked out they where about to close , something to do with the busters not sure yet but it's getting checked out tomorrow morning, I was driving on cruise control at a speed limit when this happened, will let you know what's the result of my situation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11575167March 3, 2024
SERVICE BRAKES
I was driving and my brakes seized up. Could not apply pressure at all. This could have caused serious injury to myself and my daughter as we were driving alone 3 hours from home. I was able to get into a parking lot but now my car won't start.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574922March 1, 2024
ENGINE
Two of the valves failed and the dealership told me it was likely due to a manufacturer’s defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574754February 29, 2024
FUEL/PROPULSION SYSTEM
Rear main oil seal is faulty. It caused the vehicle to leak oil to the point where it was dry. This is a known issue with these vehicles and could have caused catastrophic damage to the engine. Additionally, this can cause the vehicle to stop running and/or catch fire.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574420February 28, 2024
ENGINE
The contact owns a 2016 GMC Terrain. The contact stated while driving at an undisclosed speed, there was a knocking noise heard coming from the front of the vehicle. There was no warning light illuminated. The contact had the vehicle was towed to the residence and then to the local mechanic where a diagnostic test was performed. The local mechanic stated that the rear main seal needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was not made aware of the failure. The approximate failure mileage was 84,394.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11574021February 26, 2024
ELECTRICAL SYSTEM, ENGINE, STEERING
The car has revved high rpm's since purchase, with multiple attempts to get it resolved . Since then, the steering wheel has jerked out of my hand's multiple times, unexpecting, causing the car to jerk while being stopped. The car has also not budged in the middle of traffic while being in drive and the pedal down to the floor until at least a 10 second delay and when doing so the screen that includes the radio, etc panel has completely blacked out and started twitching
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573881February 25, 2024
ELECTRICAL SYSTEM, ENGINE, STRUCTURE:BODY
Rear side windows in hatch area leaked filled up spare tire compartment with about 3-4 gallons of water. Now navigation doesn't want to work, sunroof not working, electric systems are not working right
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573418February 22, 2024
SEAT BELTS
While in park and driving, the passenger seat belt locks and will not unlock. You must unfasten belt and refasten it. It does this multiple times during a trip. This has occurred since 2020.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11573190February 21, 2024
ENGINE AND ENGINE COOLING, EXTERIOR LIGHTING
The contact owns a 2013 GMC Terrain. The contact stated that the engine was making an abnormal knocking sound. While driving, at various speeds, the vehicle was jerking. The lights were dim. The contact had to add additional oil every 7 days. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 55,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11572976February 20, 2024
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: WARNINGS
Brakes got hard all of a sudden locked up, almost hit another car, front collision warning keeps going off and automatically hitting brakes with no one in front of me. I’ve read it could vacuum brake pump failure. Please recall this as many people have kids and could hurt them.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11572310February 16, 2024
BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING, LANE DEPARTURE: BLIND SPOT DETECTION, BACK OVER PREVENTION: WARNINGS
The blind spot detection sensors have failed and the rest of the detection systems using the bad sensors are also non functional. An alert is shown in the info center every time the car starts. I have read that the issue is due to poor positioning of the sensors allowing for tire spray to directly hit the non water resistant sensors and their connectors. The replacement parts and labor are ridiculously expensive and the ability for an owner to complete this task is nearly impossible. A simple splash guard behind the tire or even waterproofing the sensor and it’s entirety to avoid water penetrating and causing the very expensive sensor and all detection systems connected to it to fail.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11572057February 15, 2024
ENGINE
Engine timing chain broke car stop working in the middle of the road
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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