2018 GMC Terrain Problems & Owner Complaints

Service Brakes 77 2 crash 1 injury

“When trying to brake, brake pedal became extremely hard to push and Repair brake assist notification and check engine light came on”
NHTSA complaint #11483176, 2022 · 1 injury(ies)

“MY 2018 GMC TERRAIN BRAKES DID NOT WORK WHEN COMING TO A STOP AT STOP LIGHTS WHICH CAUSED ME TO REAR END THE CAR IN FRONT OF ME. THERE WAS NO WARNING ON MY SUV NOR DID I RECEIVE A RECALL ON THIS MATTER. THIS HAPPENED TWICE TO ME IN THIS SAME VEHICLE WHERE THE BRAKES DID NOT RESPOND AT A LOW SPEED CAUSING AN ACCIDENT. THIS ACCIDENT JUST HAPPENED TO CAUSE DAMAGE TO MY VEHICLE AND THE CAR IN FRONT OF ME.”
NHTSA complaint #11390858, 2021 · crash

“I PULLED INTO OUR CARPORT. IT FELT LIKE THE CAR JUST "SPED UP AND WENT FASTER AND FASTER." IT HIT THE FRONT OF THE CAR STRAIGHT ON. NO AIRBAGS DEPLOYED NOR DID THE FRONT END COLLISION STOP HAPPEN.”
NHTSA complaint #11066136, 2018 · crash

Engine 51 1 fire

“TL* THE CONTACT OWNS A 2018 GMC TERRAIN. THE CONTACT STATED THAT THE VEHICLE'S ELECTRICAL SYSTEM FAILED. THE VENTS LOCATED NEAR THE INSTRUMENT PANEL EMITTED A STRONG BURNING ODOR WHEN THE HEATING SYSTEM OR AIR CONDITIONING SYSTEM WAS ACTIVATED. IN ADDITION, THE FRONT END OF THE VEHICLE EXHIBITED A STRONG VIBRATION THAT CAUSED THE STEERING WHEEL TO VIBRATE. FURTHERMORE, WHEN THE REAR HATCH DOOR WAS CLOSED, THE REAR HATCH DOOR LIGHT REMAINED ILLUMINATED. THE CONTACT STATED THAT THE REAR DRIVER'S SIDE HUB CLIPS SEPARATED. ON STAR PERFORMED A DIAGNOSTIC AND PROVIDED THE CONTACT WITH DIAGNOSTIC CAS…”
NHTSA complaint #11154317, 2018 · fire

“The vehicle has had regular maintenance, oil change, and inspection including the brakes. My boyfriend is visiting me in [XXX] from the [XXX]. OnXXX while driving the vehicle the engine started. Making a ticking noise especially during idle and when accelerating in idle. About 15 minutes after the ticking stopped and all of a sudden there's a complete loss of breaks they locked up and the driver was unable to efficiently stop while going down a hill Road. Driver had to use the emergency brake to make the other brakes release and then the brakes from there would not work even though you could s…”
NHTSA complaint #11751119, 2026

“The contact owns a 2018 GMC Terrain Denali. The contact stated while the contact's daughter was driving, the brake pedal was depressed, however the vehicle failed to stop as intended. In addition, the contact stated that the brake pedal was unusually hard when depressed. The vehicle was taken to the dealer where the vehicle was purchased. The contact stated that the service brake vacuum pump failed while the vehicle was at the dealer. The vehicle was diagnosed with a failed service brake vacuum pump and a failed engine. The contact was informed that the service brake vacuum pump, the CAM Shaft…”
NHTSA complaint #11737294, 2026

Power Train 41 2 crash 2 injury

“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…”
NHTSA complaint #11531130, 2023 · crash · 2 injury(ies)

“THE CAR KEEPS REVVING AND DOESN'T SHIFT INTO GEAR. YOU HAVE TO LIFT YOUR FOOT OFF THE GAS PEDAL AND GIVE IT A FEW SECONDS AND THEM PRESS IT AGAIN. HOWEVER WHEN YOU PRESS THE GAS AGAIN THE CAR JUMPS INTO GEAR CAUSING THE STEERING WHEEL TO JERK EITHER LEFT OR RIGHT. IT EITHER REVS TOO HIGH OR IT FEELS LIKE IT DOWNSHIFTS. THIS LAST TIME, 9/8/20, I JUST REVERSED OUT OF MY DRIVEWAY ONTO MY RESIDENTIAL STREET, GOING ABOUT 18 MPH WHEN THE CAR WOULD NOT SHIFT INTO 2ND GEAR. WHEN IT JERKED INTO GEAR IT JERKED THE STEERING WHEEL AND IT CAUSED ME TO HIT A PARKED CAR JUST 4 DOORS DOWN FROM MY HOUSE, CAUSI…”
NHTSA complaint #11354314, 2020 · crash

“The contact owns a 2018 GMC Terrain. While attempting to shift to reverse(R) out of a parking spot, the message “Transmission Unable to Shift” was displayed on the instrument panel, and the transmission was unable to shift into reverse(R). The contact called for tow truck assistance. The vehicle was unable to shift into neutral (N). The contact stated that prior to the transmission failure, the “Service Transmission Soon” message was displayed. The vehicle was towed to a local dealer to be diagnosed, and it was determined that the transmission had failed and needed to be replaced. The vehicle…”
NHTSA complaint #11721631, 2026

Electrical System 35 1 crash 1 fire

“TL* THE CONTACT OWNS A 2018 GMC TERRAIN. THE CONTACT STATED THAT THE VEHICLE'S ELECTRICAL SYSTEM FAILED. THE VENTS LOCATED NEAR THE INSTRUMENT PANEL EMITTED A STRONG BURNING ODOR WHEN THE HEATING SYSTEM OR AIR CONDITIONING SYSTEM WAS ACTIVATED. IN ADDITION, THE FRONT END OF THE VEHICLE EXHIBITED A STRONG VIBRATION THAT CAUSED THE STEERING WHEEL TO VIBRATE. FURTHERMORE, WHEN THE REAR HATCH DOOR WAS CLOSED, THE REAR HATCH DOOR LIGHT REMAINED ILLUMINATED. THE CONTACT STATED THAT THE REAR DRIVER'S SIDE HUB CLIPS SEPARATED. ON STAR PERFORMED A DIAGNOSTIC AND PROVIDED THE CONTACT WITH DIAGNOSTIC CAS…”
NHTSA complaint #11154317, 2018 · fire

“SCREEN WENT BLACK AND WARNING CHIMES AND SEAT VIBRATION DID NOT GO OFF WHEN BACKING UP. HAD TO FILE A CLAIM WITH INSURANCE TO FIX MY DENTED BUMPER. I ALSO EXPERIENCE ISSUES WITH THE AUDIO BUTTONS ON THE STEERING WHEEL. I AM NOT ABLE TO CHANGE THE SONG IN I AM ON APPLE PLAY AND THERE IS ALWAYS A DELAY WHEN CHANGING RADIO STATIONS.”
NHTSA complaint #11270218, 2019 · crash

“The infotainment system will just randomly start going haywire and when it happens, you cannot use the touchscreen. It will try to randomly delete app icons such as the camera, it will try to delete connected phones, it will try to delete radio favorites and it will move app icons all around. These are just a few examples of things that happen.”
NHTSA complaint #11704389, 2025

Unknown Or Other 33 1 crash

“THE CAR KEEPS REVVING AND DOESN'T SHIFT INTO GEAR. YOU HAVE TO LIFT YOUR FOOT OFF THE GAS PEDAL AND GIVE IT A FEW SECONDS AND THEM PRESS IT AGAIN. HOWEVER WHEN YOU PRESS THE GAS AGAIN THE CAR JUMPS INTO GEAR CAUSING THE STEERING WHEEL TO JERK EITHER LEFT OR RIGHT. IT EITHER REVS TOO HIGH OR IT FEELS LIKE IT DOWNSHIFTS. THIS LAST TIME, 9/8/20, I JUST REVERSED OUT OF MY DRIVEWAY ONTO MY RESIDENTIAL STREET, GOING ABOUT 18 MPH WHEN THE CAR WOULD NOT SHIFT INTO 2ND GEAR. WHEN IT JERKED INTO GEAR IT JERKED THE STEERING WHEEL AND IT CAUSED ME TO HIT A PARKED CAR JUST 4 DOORS DOWN FROM MY HOUSE, CAUSI…”
NHTSA complaint #11354314, 2020 · crash

“The control knob that controls AWD, 2WD,Off-road, and 4 x4 AWD. Just stopped working. Stuck on 2WD mode. I did have it checked for any codes, even though, there is NO check engine light is on.”
NHTSA complaint #11722587, 2026

“Vehicle will not shift out of park, despite replacing the valve body, putting in a new battery, and transmission fluid. It has been this way since mid January. The codes don’t make sense and there is no current recall, nor have we had this vehicle for very long. It has 48,000 miles on it and is having this issue. Very disappointed.”
NHTSA complaint #11720574, 2026

Air Bags 14 7 crash 9 injury

“I WAS SITTING AT A RED LIGHT IN THE LEFT HAND TURN LANE. A TRUCK RAN THEIR RED LIGHT HITTING ANOTHER TRUCK SENDING BOTH OF THEM CRASHING INTO MY VEHICLE. THE FIRST TRUCK STRUCK THE FRONT BUMPER AT THE HEADLIGHT & SKID ALL THE WAY DOWN THE SIDE OF THE VEHICLE THEN THE OTHER TRUCK WAS SLAMMED INTO THE SIDE OF MY VEHICLE. ALL THE DAMAGE WAS ON THE DRIVER SIDE OF THE CAR. MY CAR WAS MOVED OVER INTO THE NEXT LANE BUT NO AIR BAGS WENT OFF. THIS HAPPENED ON A HWY WHERE THE SPEED LIMIT IS 65. THE TRUCK RUNNING THE RED LIGHT WAS GOING AT LEAST THAT FAST AND NEVER HIT THEIR BRAKES. *TR”
NHTSA complaint #11330655, 2020 · crash · 3 injury(ies)

“My car was t-boned on the driver side and no airbags deployed. The outer door and window exploded with the force. We were also hit from behind”
NHTSA complaint #11724819, 2026 · crash · 2 injury(ies)

“WHEN THE SIDE CURTAIN AIRBAG WENT OFF IT BURNED A HOLE THROUGH MY DAUGHTER'S COAT AND SHIRT CAUSING 2ND-3RD DEGREE BURNS.”
NHTSA complaint #11301393, 2020 · crash · 2 injury(ies)

Fuel/Propulsion System 12 2 crash 2 injury

“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…”
NHTSA complaint #11531130, 2023 · crash · 2 injury(ies)

“SCREEN WENT BLACK AND WARNING CHIMES AND SEAT VIBRATION DID NOT GO OFF WHEN BACKING UP. HAD TO FILE A CLAIM WITH INSURANCE TO FIX MY DENTED BUMPER. I ALSO EXPERIENCE ISSUES WITH THE AUDIO BUTTONS ON THE STEERING WHEEL. I AM NOT ABLE TO CHANGE THE SONG IN I AM ON APPLE PLAY AND THERE IS ALWAYS A DELAY WHEN CHANGING RADIO STATIONS.”
NHTSA complaint #11270218, 2019 · crash

“Gas leaking from the hood. High pressure fuel pump”
NHTSA complaint #11739681, 2026

Forward Collision Avoidance 8 1 crash

“The vehicle has had regular maintenance, oil change, and inspection including the brakes. My boyfriend is visiting me in [XXX] from the [XXX]. OnXXX while driving the vehicle the engine started. Making a ticking noise especially during idle and when accelerating in idle. About 15 minutes after the ticking stopped and all of a sudden there's a complete loss of breaks they locked up and the driver was unable to efficiently stop while going down a hill Road. Driver had to use the emergency brake to make the other brakes release and then the brakes from there would not work even though you could s…”
NHTSA complaint #11751119, 2026

“It starts to “warn” you by the seat doing whatever it does and the dash lights up collision flashing and slams on the brakes when nothing is even around”
NHTSA complaint #11682338, 2025

“The headliner fabric detached somehow from the panoramic track causing the fabric to hang down obstructing the rear and back window view causing a safety hazard. The automatic forward collision alert will come on for no reason since this has happened. The problem has not been reported to insurance or the manufacturer yet but GM is my next call. This is a safety hazard due to the obstruction of visibility to safely make turns or change lanes. This happened August 5th while driving with the windows up. It just dropped down still attached to the front of the track and the rear.”
NHTSA complaint #11606707, 2024

Vehicle Speed Control 8 1 crash

“TL* THE CONTACT OWNS A 2018 GMC TERRAIN. THE CONTACT STATED THAT WHILE PULLING INTO A BUILDING PARKING WHILE DEPRESSING THE BRAKE PEDAL, THE VEHICLE ACCELERATED, THE CONTACT TURNED THE STEERING WHEEL AND MISSED HITTING THE BUILDING. THE CONTACT STATED THAT SHE WAS NOT ABLE TO CONTROL THE VEHICLE WHILE DEPRESSING THE BRAKE PEDAL, AS A RESULT, THE CONTACT CRASHED INTO A POST. IN ADDITION, THE CONTACT STATED THAT SHE SHIFTED INTO PARK, THE VEHICLE CONTINUE TO ROLLED. THE CONTACT ENGAGED THE EMERGENCY BRAKE AND THE VEHICLE CAME TO A STOP. THE CONTACT STATED THAT SHE DID NOT NOTICED ANY WARNING LIG…”
NHTSA complaint #11377884, 2020 · crash

“Hello. As I come to a complete stop the car will go into auto-stop. After releasing the brake pedal the car will jerk forward . As I press the gas pedal the car Jerks and shakes . The rpm jumps way up and the mph say low.. there's been times I try to accelerate and the car with jerk and put itself into park.. in the middle of traffic.. heart pounding to say the lease. I also notice theres alot of black liquid dripping for the front right side under the front bumper. There were no problems with the car or lamp indicating there were before this. I went to where I brought the car and they told m…”
NHTSA complaint #11607419, 2024

“I have a 2018 GMC TERRAIN which I bought brand new from General Motors. In May 2022, the vehicle started jerking/hoping and trying to stall when the speed gets to 55 miles per hour or higher. I have taken it to the dealership on three different occasions for repair and I still have this issue. General Motors engineers were involved in every step of the repairs. They just do not know what is going on with the car or fix it and they are too stubborn. The dealership told me today that they cannot do anything else to the car. They also said they had a code from the engine last week and General Mot…”
NHTSA complaint #11474593, 2022

Electronic Stability Control (Esc) 7

“WHILE THE VEHICLE IS IN DRIVE IT LOSES PROPULSION WITHOUT NOTICE. THE VEHICLE STAYS IN DRIVE. THE VEHICLES RPM INCREASE AS YOUR FOOT IS ON THE ACCELERATOR BUT THE VEHICLE DOESN'T CONTINUE TO MOVE. THE ONLY WAY TO REGAIN PROPULSION IS TO COMPLETELY SHUT THE VEHICLE OFF AND THEN START UP AGAIN.”
NHTSA complaint #11195867, 2019

“CONTINUE TO EXPERIENCE RADIO RESETTING (COMPLETELY SHUTTING DOWN AND RESETTING GIVING YOU THE GMC LOGO) AS YOU DRIVE DOWN THE ROAD, WITH PHONE CONNECTED WITH USB AND WITHOUT. CONTINUE TO EXPERIENCE USB NOT PRODUCING ENOUGH POWER TO MY PHONE TO RUN WAZE FROM THE USB PORT UNDER THE RADIO. PHONE CALLS WILL FADE IN AND OUT BETWEEN THE RADIO AND THE PHONE CALL...BEING CONNECTED VIA BLUETOOTH TO THE TRUCK. CONTINUE NOT BEING ABLE TO ANSWER THE CALLS VIA BLUETOOTH. TRUCK HAS BEEN INTO 2 DIFFERENT DEALERSHIPS....BOTH HAVE "RESET" THE SYSTEM...BUT IT CONTINUES TO DO THE SAME THINGS...OR SOMETHI…”
NHTSA complaint #11180861, 2018

“DRIVING ON A DOWNSLOPE HEADING NORTH ON 65 GOING INTO TENNESSEE FROM ALABAMA I EXPERIENCED A LOSS OF POWER SYSTEM LIGHTS WENT OFF ALONG WITH GAUGES GOING OFF AND ON. AT WHICH TIME STABIATRAK AND TRANSMISSION LIGHTS CAME ON SAYING TO PULL OVER IMMEDIATELY.WE DID SO CALLED GM ONSTAR WHERE THEY TOLD US WE WOULD EXPERIENCE A LOSS IN POWER BUT COULD TRAVEL ONWARD. WE CHOSE TO GET TOWED, HOWEVER DUE TO THE HOLIDAY WE HAD DIFFICULTIES GETTING A TOW AND WERE FORCED TO DRIVE HOME 90 MILES AWAY. THE PROBLEM DID NOT PRESENT ITSELF AGAIN ON THE DRIVE HOME. WE TOOK IT TO A GMC DEALER IN VESTAVIA HILLS THEY…”
NHTSA complaint #11153652, 2018

Steering 6 2 crash 2 injury

“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…”
NHTSA complaint #11531130, 2023 · crash · 2 injury(ies)

“THE VEHICLE WAS IN MOTION MAKING A RIGHT HAND TURN AND IN THE TURN THE OPERATOR LOST CONTROL OF THE VEHICLE CAUSING HER TO STRIKE A CURB THEN HEAD FOR ONCOMING TRAFFIC. WHEN IT WAS ALL SAID AND DONE IT LOOKED LIKE THE BALL JOINT HAD FAILED CAUSING THE LOSS OF CONTROL. A BYSTANDER SAID HE HEARD A LOUD POP AND LOOKED UP AND WITNESSED THE VEHICLE SLIDE INTO THE CURB AND THEN SEE THE FRONT LEFT TIRE LOCK UP AND THE VEHICLE COME TO A STOP.”
NHTSA complaint #11209117, 2019 · crash

“Multiple warning lights are appearing at once (Automatic brake assist, forward collision assist, parking brake released) When the car is put in reverse, the radio turns off for a brief moment and the steering assist warning shows on the dash. The steering wheel snatches back in the opposite direction causing a safety concern. The car also completely cuts off after the auto-stop takes effect at red lights causing me to have to pump the brakes at least twice to re-ignite and be able to accelerate.”
NHTSA complaint #11440697, 2021

Visibility/Wiper 4

“The headliner fabric detached somehow from the panoramic track causing the fabric to hang down obstructing the rear and back window view causing a safety hazard. The automatic forward collision alert will come on for no reason since this has happened. The problem has not been reported to insurance or the manufacturer yet but GM is my next call. This is a safety hazard due to the obstruction of visibility to safely make turns or change lanes. This happened August 5th while driving with the windows up. It just dropped down still attached to the front of the track and the rear.”
NHTSA complaint #11606707, 2024

“My driver seat does not raise or incline so it gives me like a visibility when I’m driving. The seat needs to be raised so I have more visibility on the road while I’m driving.”
NHTSA complaint #11462545, 2021

“AT NIGHT WHILE STOPPED, AS YOU SHIFT THE CAR INTO REVERSE, THE REAR VIEW CAMERA DISPLAY IS BLINDING BRIGHT. ITS BRIGHT LIGHT IS BEING REFLECTED BY THE WINDOWS BACK INTO THE CAR, MAKING IT IMPOSSIBLE TO SEE OUT THE WINDOWS OF THE VEHICLE. WHILE OTHER CAR FUNCTIONS - RADIO, PHONE, AND NAVIGATION - WHICH ALL USE THE SAME DISPLAY SCREEN AS THE BACKUP CAMERA, DIM THEMSELVES FOR NIGHT USE, THE REAR VIEW CAMERA DISPLAY IS AS BRIGHT AT NIGHT AS IT IS DURING THE DAY, CAUSING THIS ISSUE. THIS IS A PERMANENT, REPEATABLE ISSUE.”
NHTSA complaint #11162530, 2018

Fuel System 3

“The contact owns a 2018 GMC Terrain. The contact stated while driving at approximately 65 MPH, the check engine warning light illuminated, and the vehicle decelerated to 20 MPH. Additionally, the message "Service Emissions" was displayed. The vehicle was taken to the local dealer who diagnosed that the diesel particulate filter was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the Extended Warranty coverage for the repair. The failure mile…”
NHTSA complaint #11631046, 2024

“The contact owns a 2018 GMC Terrain. The contact stated while driving approximately 30 MPH, the vehicle decelerated and failed to accelerate over 25 MPH while the accelerator pedal was depressed. The contact stated that a message was displayed on the instrument panel to “Continuously Drive Vehicle Above 30 MPH”. The contact stated that after the vehicle decelerated into engine power mode, the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the Diesel Particulate Filter (DPF) failed and needed to be replaced. Additionally, the contact stat…”
NHTSA complaint #11542629, 2023

“The contact owns a 2018 GMC Terrain. The contact stated that while driving at approximately 35 MPH going over a hill, the brake pedal was depressed but was firm and failed to depress as needed. The engine power reduced message was displayed and flashed on and then off. The brake assist warning light was illuminated. The service transmission message was displayed. The contact continued to depress the brake pedal until the vehicle responded as needed. The driver was able to pull into a parking lot, and the vehicle rolled to a stop. While driving, the engine misfired. Additionally, the vehicle fa…”
NHTSA complaint #11547673, 2019

Seat Belts 3 1 crash 1 injury

“The contact owned a 2018 GMC Terrain. The contact stated that while driving and nearly coming to a complete stop in the right lane, another vehicle driving approximately 40-50 MPH crashed into the rear of the vehicle, causing the contact to hit her face against the steering wheel, and the contact became unconscious temporarily. The contact stated that upon regaining consciousness, the contact noticed that the vehicle had moved to the grass by the left lane of the road, where traffic was going in the opposite direction. It was unknown whether the vehicle was involved in a second collision. A me…”
NHTSA complaint #11662829, 2024 · crash · 1 injury(ies)

“The "Service Safety Restraint System" warning light appears on the dashboard and warning chimes continually sound. To my knowledge GMC had a recall for this in 2018. I purchased the vehicle in 2021. I contacted GMC and told them this issue and they informed me that there are no recalls on the vehicle. My concerns being that airbags are fully functional.”
NHTSA complaint #11617658, 2024

“The contact owns a 2018 GMC Terrain. The contact stated that while driving, the seat belt restraint warning light illuminated continuously while the driver’s and passenger’s seat belts were fastened. The dealer was informed of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 21,700.”
NHTSA complaint #11458766, 2022

Seats 3

“My driver seat does not raise or incline so it gives me like a visibility when I’m driving. The seat needs to be raised so I have more visibility on the road while I’m driving.”
NHTSA complaint #11462545, 2021

“I ENTERED THE VEHICLE AND SAT IN THE FRONT PASSENGER SEAT. WHEN I SAT DOWN AND STARTED TO PUT ON MY SEAT BELT, I HEARD A LOUD POP AND THE SEAT BECAME UNSTABLE AND ROCKED BACK AND FORTH. THIS OCCURRED BEFORE THE VEHICLE WAS IN MOTION. I LOOKED UNDER THE SEAT AND NOTICED A BOLT HAD SNAPPED ON THE BOTTOM SEAT FRAME.”
NHTSA complaint #11253155, 2019

“MANUEL LEVER TO LIFT LOWER AND RAISE THE HEIGHT KEEP COMING OFF THE TRACK . THIS WILL BE THE SECOND TIME , THAT I HAVE TO GO TO THE DEALERSHIP TO RESOLVE THIS ISSUE.”
NHTSA complaint #11099409, 2018

Structure 3 1 crash

“I PULLED INTO OUR CARPORT. IT FELT LIKE THE CAR JUST "SPED UP AND WENT FASTER AND FASTER." IT HIT THE FRONT OF THE CAR STRAIGHT ON. NO AIRBAGS DEPLOYED NOR DID THE FRONT END COLLISION STOP HAPPEN.”
NHTSA complaint #11066136, 2018 · crash

“The strike plate on my rear driver door fell off. The plate and bolts are in perfect condition but the backing is gone. Multiple body shops have attempted to locate the backing, which is somewhere between the interior and exterior metal body pieces, and gave been unable to. Every body shop I've taken it to also says that they have never seen anything like this happen before. They are reluctant to fix it because that would mean cutting through the body to replace the backing for the strike plate then welding, sanding, and painting in the area they cut and they worry about the integrity of the s…”
NHTSA complaint #11632952, 2024

“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”
NHTSA complaint #11573881, 2024

Lane Departure 2

“It starts to “warn” you by the seat doing whatever it does and the dash lights up collision flashing and slams on the brakes when nothing is even around”
NHTSA complaint #11682338, 2025

“Radio, hands free calling, and light on mirror shorting out. None of them work. It’s like it has a short in the wiring.”
NHTSA complaint #11469176, 2022

Suspension 2 1 crash

“THE VEHICLE WAS IN MOTION MAKING A RIGHT HAND TURN AND IN THE TURN THE OPERATOR LOST CONTROL OF THE VEHICLE CAUSING HER TO STRIKE A CURB THEN HEAD FOR ONCOMING TRAFFIC. WHEN IT WAS ALL SAID AND DONE IT LOOKED LIKE THE BALL JOINT HAD FAILED CAUSING THE LOSS OF CONTROL. A BYSTANDER SAID HE HEARD A LOUD POP AND LOOKED UP AND WITNESSED THE VEHICLE SLIDE INTO THE CURB AND THEN SEE THE FRONT LEFT TIRE LOCK UP AND THE VEHICLE COME TO A STOP.”
NHTSA complaint #11209117, 2019 · crash

“TL* THE CONTACT OWNS A 2018 GMC TERRAIN. WHILE DRIVING 80 MPH, THE REAR PASSENGER TIRE SHOOK AND VIBRATED LOUDLY. THE CONTACT TOOK THE VEHICLE TO ED BOZARTH CHEVROLET (2001 S HAVANA ST, AURORA, CO 80014, (720) 746-2716) WHERE IT WAS DIAGNOSED THAT THE TIRES WERE FAULTY. BOTH REAR TIRES WERE REPLACED, BUT THE FAILURE CONTINUED. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS UNKNOWN.”
NHTSA complaint #11230151, 2019

Wheels 2

“TL* THE CONTACT OWNS A 2018 GMC TERRAIN. WHILE DRIVING 80 MPH, THE REAR PASSENGER TIRE SHOOK AND VIBRATED LOUDLY. THE CONTACT TOOK THE VEHICLE TO ED BOZARTH CHEVROLET (2001 S HAVANA ST, AURORA, CO 80014, (720) 746-2716) WHERE IT WAS DIAGNOSED THAT THE TIRES WERE FAULTY. BOTH REAR TIRES WERE REPLACED, BUT THE FAILURE CONTINUED. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS UNKNOWN.”
NHTSA complaint #11230151, 2019

“WHILE DRIVING ON A SNOW- COVERED ROAD WITH ANY AMOUNT OF SNOW, THE SNOW GETS PACKED INSIDE OF THE WHEELS AND THROWS THE WHEEL BALANCE OFF CAUSING THE STEERING WHEEL TO SHIMMY BADLY AT HIGHWAY SPEEDS. I HAVE TO REMOVE THE SNOW PACK EVVERY DAY, AND I BELIEVE THAT THIS IS AN AERODYNAMIC DESIGN FLAW WITH THE WHEELS WHERE THE SNOW DOESN'T GET BLOWN OUT OF THE WHEEL WHILE THE CAR IS IN MOTION.”
NHTSA complaint #11192431, 2018

Back Over Prevention 1

“TL* THE CONTACT OWNS A 2018 GMC TERRAIN. WHILE DRIVING AT NIGHT AND ATTEMPTING TO BACK INTO THE DRIVEWAY, THE BACK UP CAMERA WAS TOO BRIGHT AND WAS DIFFICULT TO SEE. THE CONTACT STATED THAT THE SIDE VIEW MIRRORS DID NOT HELP DUE TO THE TINTED WINDOWS. THE VEHICLE WAS TAKEN TO SCHEPEL BUICK GMC (219-472-1449, LOCATED AT 3209 LINCOLN HWY, MERRILLVILLE, IN 46410) WHERE THE TECHNICIAN CONFIRMED THAT IT WAS A SAFETY ISSUE, BUT STATED THAT THERE WAS NO REMEDY. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT NOTHING COULD BE DONE. THE CONTACT WAS PROVIDED A CASE NUMBER. THE VEHICLE WAS…”
NHTSA complaint #11160737, 2018

Engine And Engine Cooling 1

“The contact owns a 2018 GMC Terrain. The contact stated while driving at approximately 65 MPH, the check engine warning light illuminated, and the vehicle decelerated to 20 MPH. Additionally, the message "Service Emissions" was displayed. The vehicle was taken to the local dealer who diagnosed that the diesel particulate filter was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the Extended Warranty coverage for the repair. The failure mile…”
NHTSA complaint #11631046, 2024

Exterior Lighting 1

“Radio, hands free calling, and light on mirror shorting out. None of them work. It’s like it has a short in the wiring.”
NHTSA complaint #11469176, 2022

Latches/Locks/Linkages 1

“The contact owns a 2018 GMC Terrain. The contact stated that the transmission was shifting gear erratically. The contact stated that the doors were locking and unlocking independently, and the instrument cluster was blank. There was an abnormal beeping sound coming from the vehicle. Additionally, the contact stated that while at a traffic light, the Auto START/STOP feature delayed to respond. OnStar was alerted, but the contact declined to perform the service. The contact was in contact with the independent mechanic who sold the vehicle, but no assistance was provided. The local dealer was con…”
NHTSA complaint #11698239, 2025

Tires 1

“At ignition, vehicle tire pressure monitoring system indicated low tire pressure in rear right wheel of 9psi; right front tire indicated 38psi and left front and rear indicated 38psi. Driver verified pressure as good at 38psi in rear right tire with hand held gauge. While operating the vehicle on the interstate, vehicle driver experience a flat tire in the right front passenger tire. Tire Pressure monitoring system indicated 41psi in right front tire (even while flat), and indicated right rear tire at 0psi even though it was visually inflated.”
NHTSA complaint #11476607, 2022

Visibility 1

“TL* THE CONTACT OWNS A 2018 GMC TERRAIN. WHILE DRIVING AT 70 MPH, THE CONTACT HEARD AN EXPLOSION AND COASTED THE VEHICLE TO THE SIDE OF THE ROAD. THE CONTACT NOTICED THAT THE MOONROOF GLASS HAD SHATTERED. THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO DIXIE BUICK GMC (AT 14565 S TAMIAMI TRAIL, FORT MYERS, FL 33912 AND WAS INFORMED THAT THEY COULD NOT LOCATE A FAILURE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 2,000. *TT THE CONSUMER STATED VEHICLE WAS FIXED BY STATE FARM INSURANCE COMPANY. *TR”
NHTSA complaint #11066977, 2018