NHTSA Owner Complaint Log
This page lists owner-reported complaints filed with NHTSA for the 2015 GMC Terrain. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.
Data synced from NHTSA on May 4, 2026
IF WE USE ANY CLIMATE CONTROL SETTING BEFORE USING THE DEFROSTER, THEN TRY TO USE THE DEFROSTER, IT WILL ONLY BLOW COOL AIR. IF WE CHANGE THE SETTING TO VENT, HEAT OR A/C, WARM AIR WILL BLOW, BUT SWITCH IT BACK TO DEFROST AND ONLY COOL AIR BLOWS FROM IT. WE COULD NOT CLEAR THE WINDSHIELD OF FOG IN A WARM RAIN WITHOUT TURNING THE DEFROSTER ALL THE WAY TO HOT (95 DEGREES). AS THIS WAS IN THE MIDDLE OF SUMMER, IT WAS UNBEARABLY HOT IN THE CAR TRYING TO DRIVE. TOOK THE CAR TO 2 SERVICE DEPARTMENTS MULTIPLE TIMES, NO CODE SHOWS, SO NO FIX FOR THIS. WE ARE SENT BACK HOME WITH CAR AS IT IS. THE PROBLEM WAS NOTICED JUST AFTER BUYING THE CAR IN JULY 2015, AND CONTINUES TODAY.
WHEN RENTING A GMC 2015 TERRAIN FROM NATIONAL CAR RENTAL IN PHOENIX AZ IN MAY 2015, UPON RETURNING THE VEHICLE WE NOTICED THAT THE SUN ROOF WAS SHATTERED. THERE WAS A SLIDING DOOR BETWEEN THE SUN ROOF AND THE INTERIOR OF THE VEHICLE AND WE NEVER OPENED THE SUN ROOF OR THE SLIDING DOOR AND WAS SURPRISED WHEN THE SUN ROOF WAS SHATTERED. WE WERE CHARGED BY NATIONAL CAR RENTAL $750.00 FOR THE REPAIR AND STILL CAN'T FIGURED OUT HOW OR WHEN THIS HAPPENED. WE DIDN'T EXPERIENCE ANY EXTREME HOT PHOENIX TEMPERATURES DURING THAT TIME AND THE VEHICLE WAS PARKED IN A GARAGE WHEN NOT USED. WE DIDN'T EVEN KNOW THAT THERE WAS A SUN ROOF AS WE WERE TRANSPORTING OUR 1 YEAR OLD GRAND DAUGHTER AROUND IN AN INFANT SEAT IN THE BACK SEAT. IF WE WOULD HAVE EVEN KNOWN ABOUT THE SUN ROOF WE WOULDN'T HAVE OPENED ANYWAY. WE DON'T KNOW IF WE RENTED THE VEHICLE THAT HAD THIS DAMAGE BEFORE WE LEFT THE RENTAL AREA OR NOT AS WHO EVER LOOKS FOR DAMAGE ON TOP OF A RENTAL VEHICLE AND WE ALWAYS CHECK AROUND THE VEHICLE, WE WILL NOW CHECK AND PROBABLY NEVER RENT ANOTHER VEHICLE WITH A SUN ROOF. IT IS UNFORTUNATE THAT RENTAL CAR COMPANIES HAVE POLICIES THAT NEVER ALLOW THESE TYPES OF DAMAGES TO BE REPORTED WHEN SAFETY IS AT RISK. UPDATE 9/15/15*CW *CN
TL* THE CONTACT OWNS A 2015 GMC TERRAIN. WHILE DRIVING 30 MPH, THE LOW BEAM HEADLIGHTS FAILED TO FULLY ILLUMINATE. THE FAILURE OCCURRED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER, BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 300.
TL* THE CONTACT OWNS A 2015 GMC TERRAIN. WHILE DRIVING 20 MPH AT NIGHT, THE LOW BEAM HEADLIGHTS DID NOT FULLY ILLUMINATE. THE FAILURE OCCURRED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT COULD NOT BE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 8,500....UPDATED 02/03/16 *BF UPDATED 03/09/16.*JB
TO WHOM IT MAY CONCERN, YESTERDAY, 3/22/15, MY WIFE AND I WERE DRIVING WHILE CAROL TOOK HER FOOT OFF THE GAS PEDAL AS WE WERE APPROACHING A STOP LIGHT. AT THAT TIME THE CAR STARTED ACCELERATING. IS THIS A NEW PROBLEM OR HAS IT BEEN REPORTED BEFORE? WHO DO I CONTACT TO INVESTIGATE THIS ISSUE AND ENSURE THAT MY VEHICLE IS SAFE? MY DAUGHTER BOUGHT A 2014 GMC TERRAIN LAST YEAR AND I'M CONCERNED ABOUT HER VEHICLE AS WELL. *TR
WHILE SWITCHING LANES IN TRAFFIC ( AROUND 15 MPH), THE VEHICLE SHUT OFF (INCLUDING RADIO GAUGES AND ENGINE). PUT ON HAZARDS, SWITCHED FROM DRIVE TO PARK, AND RESTARTED THE CAR. *TR
WHILE MAKING A RIGHT TURN AT THE BOTTOM OF A FREEWAY OFFRAMP THE KEYS ON THE KEYRING ATTACHED TO THE KEY IN THE IGNITION GOT STUCK IN THE STEERING WHEEL. THIS BRIEFLY PREVENTED ME FROM EXITING THE TURN, AND THEN WHEN THE KEYS BROKE FREE THE CAR HAD TURNED ITSELF OFF!! I HAD NO POWER STEERING, NO POWER BREAKS AND NO HEADLIGHTS. I WAS ON A SLIGHT DOWNGRADE AND WAS ABLE TO COAST TO THE NEXT BLOCK WHERE I TURNED RIGHT OUT OF TRAFFIC BEFORE COMING TO A FULL STOP. I WAS THEN ABLE TO RESTART THE CAR AFTER PUTTING INTO NEUTRAL (OR PARK, DON'T REMEMBER). THE KEYCHAIN THAT GOT STUCK WAS FROM ENTERPRISE RENTAL AND HAD 2 KEY-FOBS ON IT PLUS A PLASTIC ID TAG ON A SMALL WIRE RING. THIS, COMBINED WITH THE POOR PLACEMENT OF THE IGNITION SWITCH, HAS RESULTED IN MY HITTING THE KEYS WITH MY HANDS WHILE STEERING SEVERAL TIMES SINCE RENTING THE CAR 5 DAYS AGO. THE IGNITION SWITCH IS LOCATED VERY CLOSE TO THE WHEEL AND THE IGNITION KEY WHICH STICKS OUT OF THE LARGE KEY-FOB IS VERY CLOSE TO THE STEERING WHEEL EVEN WITHOUT OTHER KEYS ON THE RING. TESTING THIS IN MY DRIVEWAY IT IS VERY EASY TO TURN THE CAR OFF WHILE IN DRIVE. VERY SCARY! *TR
2015 GMC TERRAIN. CONSUMER WRITES IN REGARDS TO SUDDEN LOSS OF ENGINE POWER, ACCELERATOR PEDAL AND THROTTLE FAILURES. *SMD THE CONSUMER STATED WHEN SHE TRIED TO ACCELERATE, THE VEHICLE BARELY MOVED. THE CONSUMER TURNED OFF THE VEHICLE AND RE-STARTED IT, WITH THE SAME RESULTS. THE ENGINE WOULD JUST IDLE AS IF THE ACCELERATOR PEDAL WAS DISCONNECTED. *JB
I PURCHASED A 2015 GMC TERRAIN FROM DEALER ON12/18/2014. AT APPROXIMATELY 700 MILES, CAR WOULD NOT START. DID NOTHING, NO GRINDING, CLICKING JUST WOULD NOT START. HAD LIGHTS, RADIO, FAN ON HEATER. CALL THORNHILL AND CAR WAS TOWED THERE, THEY COULD NOT FIND THE ISSUE. APPROXIMATELY 2 WEEKS LATER, ANOTHER COLD SPELL AND CAR DID THE SAME. WAS TOWED TO THORNHILL AND WAS THERE FOR SEVERAL DAYS. WOULD NOT START FOR THEM EITHER, SAID THEY COULD NOT FIND THE PROBLEM. FAST FORWARD TO TODAY AND CAR IS STILL DOING THE SAME. WHEN TEMPERATURE GETS TO 10 OR BELOW, WILL NOT START.
The contact owns a 2015 GMC Terrain. The contact stated that the high beam headlights would operate independently. The contact stated no warning light was illuminated. The contact stated that she was stopped by oncoming drivers and informed that the high beams were flashing while driving. The contact took the vehicle to the local dealer who was unable to duplicate the failure. The vehicle was not repaired but continued to experience the failure. Upon investigation, the contact associated the failure with NHTSA Campaign Number: 22V137000 (Exterior Lighting) however, the part to do the recall repair was not yet available. The contact also found NHTSA Campaign Number: 22V165000 (Visibility) associated with her VIN. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. VIN tool confirms parts not available. The failure mileage was approximately 2,000.
Airbag sensor failed, and is available for inspection. GNC dealership turned off the front passenger airbags.