2018 GMC TERRAIN Unknown Or Other Problems

Component Affected: Service Brakes, Hydraulic – Brake Vacuum Pump Summary of the Problem: I am reporting a serious safety issue involving the brake vacuum pump on my 2018 GMC Terrain. The brake pump failed catastrophically ("blew up"), resulting in a sudden loss of braking power. This occurred without warning and posed a significant risk to my safety and others on the road. We were traveling to vacation in Florida and thankfully had just gotten off the interstate. Details: The failure caused the brake pedal to become extremely hard to press, and the vehicle required a much longer distance to stop. We experienced no brake at the brake booster and a blown vacuum pump is due to a faulty vacuum pump which is a known issue for this model. Fortunately, no accident occurred, but the situation could have easily led to a collision. A certified mechanic confirmed that the brake vacuum...

I was 30 seconds away to pull in my driveway. WARNING came up on screen (service) TRANSMISSION UNABLE TO SHIFT. When I turned into my driveway the vehicle stopped suddenly & threw itself into PARK. Vehicle still running but would not go into any gear, drive or reverse. I then pushed the PARK button & I think it said EMERGENCY BRAKE RELEASED. I then proceeded to drive up my driveway with no problem. Haven’t gotten back in vehicle yet as I am afraid to but l made appointment to take it to the dealership to check it out. On 3/24. (Linus Cadillac Buick GMC)Thank god it happened in my driveway as it would’ve caused an accident. ( the vehicle was driven up the Rd. walking distance. Sat there for an hr. Visiting my family. Then was driving home When incident happened. So it wasn’t running hot or anything.

My car is allowing me to drive without the key fob. I've drove two hours away from my house where my key fob was. It allows me to shut off the vehicle. Vehicle says ' no remote detected. Press Brake to restart. This is the 3rd incident. This is definitely a safty issue. Someone can take my car 2 hours or so from my residence.

The car very suddenly went into a reduced engine power mode, with check engine light and was immediately parked. Figuring I could turn the car off and turn it back on, however it sputtered turning off and shook violently before I was able to turn it off. It would then not turn back over, so I left it off and had a tow truck drive it to a GMC mechanic. The GMC mechanic was unable to diagnose an issue after days. I then had it towed to another local mechanic who stated the parts were "junk" and the engine needed to be replaced. Engine codes were related to the camshaft sensor and brake booster. It is my understanding the vacuum pump broke off into pieces, went into and destroyed my engine.

Safety was put at risk when brakes went out without warning, and unable to use emergency brake at that time. Car was serviced for over $1700, with the mechanics stating that the piece “blew up.”

The clips popped off or something happened and now the headliner is hanging and I can't see out the rear view mirror. It's a hazard for anyone sitting in backseat. I've had it in 2 different shops .needs to be a recall because I've read several other people having this issue

This complaint is for the rear camera / back up camera system: After purchasing the vehicle the back up camera started to get hazy around 25,000 miles. At 35,000 miles it was completely useless. I purchased a second back up camera and had the body shop install it. It has now been right at the same mileage, 30,000 miles, and the camera is again hazy. This is not an external haze where I can just wipe the camera off, even carefully so as to not scratch the lens or cover, but a haze that is behind (inside) the protective outer lens (cap). This has happened with both cameras and I am facing installing a third. My vehicle has less than 70,000 miles on it! I've had other vehicles where the camera lasted way longer (lifetime!) of the vehicle. When I went to the dealer with the complaint on the original...

I was driving my car December 10, 2023 when I was at a red light my truck completely shut down I could not reverse I could not put in drive I could not put in Park I could not switch gears. I didn’t know what happened. I had to call a tow truck to get me home once I got home I got my car towed to a shop. Before my car was towed I contacted OnStar. OnStar did a diagnosis on my car and it came back ECM which stands for electric control module. When my car was at the shop i got a tune up & the mechanic was able to start my car. Driving again on the date of December 15, 2023 it did it again and it said ECM. I was paranoid because I was on the expressway I had too get my car towed to...

Driving home from our local town 4/15/2023, the brake pedal became to hard to push down. Check engine light came on as I got to my driveway, and that is 1 mile from the main road. My kids were scared to tears as was my girlfriend. Run a scan and dtc p0557. Come to find the vacuum pump on the top drivers side of motor is the part that is bad it broke inside the valve cover. Looking up the issue and find out it is a known problem and no recall. I have kept the parts and all receipts for the repairs, I have to do myself cause the repairs are way to much for me to pay out of pocket. This is a serious issue for this car and year and GMC needs to address the issue. Why has nothing been done yet??? I am making payments on...

I was driving at night with my daughter on a two lane highway with no traffic. There was a sound like a gun shot or explosion in the cabin of the car. My panoramic moonroof literally exploded. The glass shattered but did not fall into the cabin. Had the glass fallen into the cabin it could have cut or blinded us or caused an accident as we were traveling at a high rate of speed. No indicators went off as the moonroof has no such indicator. We pulled over to inspect the damage and immediately saw the glass damage. I have contacted insurance for repair. Upon research it seems that this is quite common for vehicles but not enough for any type of recall or service bulletin.

Auto-Stop feature does not have a button to disable the feature.2019 model has the disable feature and GM needs to provide a means to disable it, even if on a temporary basis.

MY AUTO STARTED LEAKING SOME KIND OF OIL.NOT SURE WHAT KIND BUT I CAN SEE ACCUMULATION ON DRIVEWAY CONCRETE PAD. HAD MOTOR OIL & FILTER CHANGED IN CASE IT WAS A O-RING OR NOT TIGHT ENOUGH. IT CONTINUES TO LEAK.

THE SERVICE STABILITRAK LIGHT CONTINUES TO COME ON. WHEN IT DOES, ALMOST ALL OF THE LIGHTS ON THE DASH LIGHT UP AND THE CAR PUTS ITSELF IN NEUTRAL AND SHUTS OFF. THIS HAS HAPPENED 5 TIMES IN THE PAST TWO WEEKS. TWICE WITH MY [XXX] IN THE CAR. PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). THE CAR WAS PURCHASED 12/23/2020 AND IT FIRST SHUT OFF WITH THE SERVICE STABILITRAK WARNING 12/31/2020. I'VE TAKEN IT TO THE DEALERSHIP FOR REPAIR. THEY REPLACED THE FRONT RIGHT WHEEL SENSOR TODAY AND IMMEDIATELY AFTER LEAVING THEIR LOT, IT SHUT OFF TWICE. I DID A SEARCH ON THE VIN AND FOUND THAT THIS VEHICLE HAD ISSUES AT 11K MILES AND 27K MILES. NOW AGAIN AT 55K MILES. THE CAR JUST SHUTS ITSELF OFF WHILE DRIVING. FIRST TIME IT HAPPENED,...

DRIVING 50MPH ON AN OVERPASS, SUNROOF EXPLODED.

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, CAUSING $6000 WORTH OF DAMAGE TO MY TERRAIN LIKELY TOTALING THE 2010 COROLLA I HIT. I HAVE HAD A CLEAN DRIVING RECORD FOR 30 YEARS UNTIL NOW. GMC WILL NOT OWN FAULT AND...

RADIO PLAYS RANDOM RADIO STATIONS AND WILL NOT ALLOW RADIO TO BE TURNED OFF WHEN VEHICLE IS TURNED OFF ( NO POWER TO THE VEHICLE, DOORS ARE OPENED AND THE FOB IS OVER 500 FT AWAY). RADIO SCREEN FLASHES TO A BLANK SCREEN. DOES NOT READ CONTACT INFORMATION FOR CELLPHONE CONNECTED TO VEHICLE. WILL NOT ALLOW PHONE CALLS TO BE MADE AND WILL CONTINUE TO PLAY MUSIC THROUGH RADIO AND CAR SPEAKERS WHILE PHONE IS ENGAGED IN A TELEPHONE CALL ( ONCE CALL IS ABLE TO BE PLACED). ANDROID AUTO FEATURE STOPPED WORKING. VEHICLE WILL SLIP OUT OF GEAR AND RANDOMLY PUT SELF INTO AN OVERDRIVE. VEHICLE WILL NOT ACCELERATE DESPITE GAS PETAL BEING ALMOST TO THE FLOOR AND THEN WILL JUMP RAPIDLY AND ACCELERATE QUICKLY. VEHICLE SMELLS LIKE RUBBER IS BURNING UNDER THE HOOD AT VARIOUS TIMES.

THE NEW AUTO STOP THAT SHUTS OFF THE MOTOR WHEN YOU'RE AT A RED LIGHT DOESN'T WORK PROPERLY. SOMETIMES IT SHUTS OFF, BUT MOST OF THE TIME IT DOESN'T BEEN TO THE DEALER TWO TIMES AND THE RADIO WILL NOT COME ON AT TIMES EVEN THOUGH GM HAS PERFORMED UPDATES ON THESE PROBLEMS. THE PROBLEMS STILL EXIST

MY CAR JUST COMPLETELY SHUT DOWN OUT OF NOWHERE. IT HAS HAPPENED TWICE WHEN I WAS SLOWING FOR TRAFFIC AND WHEN I WAS IN A PARKING LOT. THE FIRST TIME I COULDN'T GET OUT OF THE CAR BECAUSE THE DOOR WOULDN'T UNLOCK. THEN THE POWER CAME ON BUT THE CAR WOULD NOT TURN OVER. IT HAS PUSH BUTTON GEAR SHIFTS AND WOULD NOT GO INTO NEUTRAL. I HAD TO CALL THE POLICE TO ASSIST UNTIL THE CAR WAS TOWED BECAUSE I WAS ON A VERY BUSY AND DANGEROUS STREET. I HONESTLY WAS SCARED SOMEONE WAS GOING TO SLAM INTO ME. THE SECOND TIME I WAS LOOKING FOR A PARKING SPOT AND IT STOPPED. LUCKILY I ALWAYS KEEP THE DOORS UNLOCKED SINCE FIRST INCIDENT HAD TO BE TOWED BOTH TIMES. AS OF TODAY IT IS STILL AT THE DEALER TRYING TO BE FIXED FOR A SECOND TIME. THEY 'THOUGHT' THEY FIXED...

WHEN VEERING OR STEERING INTO ANOTHER LANE, LEFT OR RIGHT, THE SAFETY ALERTS, I.E. THE TUG OF THE STEERING WHEEL AND VIBRATION OF SEAT, ARE NOT WORKING PROPERLY. FOR THE FIRST YEAR OF OWNERSHIP OF THIS VEHICLE, THIS FEATURE WORKED FINE. HOWEVER, IN THE PAST FEW MONTHS, IT HAS QUIT WORKING OR WORKS SPORATICALLY BUT WHEN WORKING SPORATICALLY, DOES NOT WORK AS IT SHOULD. THE DEALERSHIP WHERE I PURCHASED IT IS UNABLE TO FIX IT STATING THAT IN "UPDATING" THE PROGRAMMING IN MY CAR, THIS FEATURE WAS WEAKENED (DILIBERATELY BECAUSE GMC INTENDED TO WEAKEN THE FEATURE STATING THE REASON WAS BECAUSE SOME DRIVERS WERE USING THIS FEATURE AS AN AUTO-DRIVE). I BOUGHT THIS VEHICLE, ONE OF THE REASONS BEING THAT IT OFFERED THIS FEATURE AND NOW THE FEATURE DOESN'T WORK THE WAY IT DID WHEN I BOUGHT IT.

WHILE DRIVING, THE INFOTAINMENT SYSTEM GOES BLACK, NO AUDIO - THEN REBOOTS AFTER A MINUTE OR TWO. I HAVE DETECTED A BURNING SMELL AS WELL, BUT CANNOT DETERMINE IF IT IS COMING FROM MY VEHICLE OR OUTSIDE. THIS HAS HAPPENED 5 TIMES AND THE DEALER IS TELLING ME THEY CAN NOT REPLICATE OR FIND ANYTHING WRONG. VERY FRUSTRATING!!! THIS HAS HAPPENED SHORTLY AFTER LEAVING HOME, WHILE DRIVING ON CITY ROADS, AFTER DRIVING A WHILE, ON THE HIGHWAY, STOPPED AT A RED LIGHT. THERE IS SO SPECIFIC TIME OR FREQUENCY THAT THIS OCCURS. THIS FIRST HAPPENED WITHIN 300 MILES OF WHEN I FIRST LEASED, UP TO A WEEK AGO SUNDAY, JULY 7. TOTAL OF 5 TIMES IN THE PAST 10 MONTHS!

I WAS NOTIFIED OF MY DEALER OF RECALL N192217490. WHICH IS A SERIOUS ISSUE AND IT'S NOT ON YOUR LIST WONDERING WHY YOUR LIST IS LACKING YOU'RE SUPPOSED TO BE THE AUTHORITY ON RECALLS BUT YET ON STAR NOTIFIED MY DEALER OF THIS RECALL AND IT'S A TRANSMISSION ISSUE OR CLUTCH ISSUE WHICH IS SERIOUS WHY IS IT NOT ON YOUR LIST HOW CAN I TRUST YOUR COMPANY TO HAVE A THOROUGH LISTING OF ALL RECALLS WHEN THIS WIND IS NOT EVEN ON CAN'T WAIT TO HEAR YOUR EXPLANATION

TRANSMISSION LOCKS UP AND WILL NOT SHIFT INTO HIGHER GEAR. THIS HAS HAPPENED SEVERAL TIMES WHILE DRIVING.

THE CAR AUTOMATIC BRAKING SYSTEM LOCKED UP AS DRIVING ON HIGHWAY. COULD NOT GET CAR TO MOVE.

I HAVE AROUND 6 TO 7 MONTH WITH THE VEHICLE AND SINCE DAY ONE IT MADE A WEARD NOISE IN THE ENGINE TRANSMISSION AREA AND THE VEHICLE DOESNT RESPOND AND PERFORM WELL I TOOK IT TO THE DEALERSHIP AND AT FIRST THEY STATED IT WAS SOMETHING WITH THE TRANSMISSION AND THEN THEY STARTED GIVING ME MANYDIFERENT EXCUSES AND THAT IT WAS NORMAL BUT STILL THE SUV WOULDNT RESPOND I CALLED GM AND THEY OPENED A TICKET BUT AFTER THAT THEY SAID THEY COULD NOT DO ANYTHING ABOUT IT IN OTHER WORDS THEY TOLD ME I HAD TO DEAL WITH THE ISSUE. YESTURDAY FEB 26,2019 THE SUV STARTED HAVING WORST PROBLEMS AS TO WHERE IT WOULD NOT RUN MOR THEN 33 MILES A HOUR IT STARTED SHAKING RPMS GOING WILD THE VEHICLE ONLY HAS 5500 MILES ON IT. I DONT KNOW WHAT TO DO OUT OF THIS TIME I HAVE WITH...

WHEN I DRIVE MY CAR AFTER COMING OUT OF REVERSE THE CAR REVS UP BETWEEN 35 AND 45 RPMS. THIS IS WHEN IT IS GOING ABOUT 25 MPH. WHEN I REMOVE MY FOOT FROM THE GAS THE CAR JERKS VIOLENTLY FORWARD AND RPMS DROP TO 25RMS. WHEN I GIVE IT SOME GAS THE RPMS GO UP AGAIN TO THE 35-45 RPM. THE ONLY WAY TO GET THIS TO STOP IS TO PULL OVER, PUT THE CAR IN PARK, TURN OFF THE CAR AND OPEN THE DOOR. I LET IT SIT FOR ABOUT 10 MIN AND THEN TURN IT BACK ON AND DRIVE. I HAVE BROUGHT IT TO THE DEALER SEVERAL TIMES AND THEY KEEP TELLING ME THERE IS NOTHING WRONG THAT WHEN THEY PLUG IT IN EVERYTHING COMES BACK FINE. I HAVE HAD OTHER PEOPLE IN THE CAR AND IT HAS HAPPENED WITH WITNESSES SO I AM NOT IMAGINING IT....

MY VEHICLE HAS BEEN MAKING A NOISE EVERY SINCE THE DAY OF PURCHASE. IT STARTED AS A VAGUE SOUND AND HAS SINCE GOTTEN WORSE. THE NOISE IS COMING FROM THE REAR EXHAUST. AT CERTAIN SPEEDS OF TRAVEL THE NOISE GETS WORSE. I HAVE DONE A VISIBILITY CHECK OF THE REAR EXHAUST PIPE AND NOTICED THE ASSEMBLED EXHAUST WHERE IT WAS WELDED IS LOOSE AND SHAKING. I'M NOT FOR SURE IF THIS IS WHERE THE NOISE IS COMING FROM BUT IT COULD USE SOME INVESTIGATION. I PURCHASED MY VEHICLE WITH NO MILEAGE ABOUT 5 MONTHS AGO FROM HENNESSY GMC IN MORROW GEORGIA.

1. LANE DEPARTURE WARNING ONLY WORKS WITH HANDS OFF THE STEERING WHEEL.GM REFUSES TO FIX IT AS THEY SAID THEY DESIGNED THE VEHICLE THIS WAY. WHO IN THEIR RIGHT MIND DRIVES WITH HANDS OFF THE STEERING WHEEL, WE BOUGHT THIS FEATURE FOR OUR YOUNG DRIVERS TO HAVE THEM REMINDED IF THEY DRIFT OUT OF THEIR LANE. 2. WARNING WINDOW ABOUT DISTRACTED DRIVING DISPLAYS ON THE RADIO SCREEN WHILE DRIVING, SO YOU HAVE TO TAKE YOUR EYES OFF THE ROAD TO PUSH OK TO GET RID OF IT. GM REFUSES TO DO ANYTHING ABOUT THAT EITHER. 3. SEATBELTS ARE NON ADJUSTABLE HEIGHTWISE AND LENGTHWISE. THEY ARE OK FOR TALL PEOPLE, FOR ME BEING 5'4 THEY ARE UNCOMFORTABLE AND RUB MY NECK.SO I HAVE TO DRIVE WITHOUT THEM. GM IN 2018 DESIGNED ALL THEIR GMC AND BUICK VEHICLES THIS WAY, TO SAVE MONEY, I AM SURE. THESE TYPE OF UNADJUSTSBLE SEATBELTS WERE...

THEIR IS A START/STOP FEATURE IN THIS MODEL WHERE THE CAR AUTOMATICALLY SHUTS OFF WHEN THE VEHICLE STARTS. I'M TOLD IT'S FOR FUEL EFFICIENCY. ONE DAY I STOPPED AT A STOP SIGN WHICH HAPPENED TO BE ON A SMALL HILL. THE CAR STOPPED AND BEGAN ROLLING BACKWARDS. IT SCARED ME AND I THOUGHT I WOULD HIT THE CAR BEHIND ME. I IMMEDIATELY TOOK MY FOOT OFF THE BRAKE TO MAKE THE CAR RE-START, THEN IMMEDIATELY STEPPED ON THE BRAKE. I DON'T THINK WE SHOULD SACRIFICE SAFETY OVER FUEL. IF ONLY THERE WAS AN OPTION TO DISABLE THIS FUNCTION. I WAS SCARED FOR THE PEOPLE WHO WERE BEHIND ME. SCARY SITUATION TO BE IN!

THERE IS NO WAY TO DEACTIVATE THE AUTO / STOP FEATURE; I CONSIDER EACH USER SHOULD HAVE THE OPTION TO ACTIVATE OR DEACTIVATE THIS OPTION.

PURCHASED A BRAND NEW GMC TERRAIN. 12 DAYS AND 460 MILES LATER THE SERVICE ENGINE SOON LIGHT CAME ON. TOOK IT TO DEALERSHIP FOR A P050F. THIS IS CODE FOR A LEAK IN THE BOOSTER. THEY DID NOT REPAIR ANYTHING, JUST CHECKED FOR LEAK AND RESET ENGINE LIGHT. AS I READ MORE, THE PROBLEM AFFECTS THE BRAKES ABILITY TO FUNCTION PROPERLY INCREASING DANGER TO DRIVER. THERE IS ALSO DEFECTIVE STOP/IDLE ON THE ENGINE THAT NO LONGER WORKS. I WAS JUST DRIVING DOWN THE ROAD IN TOWN WHEN IT POPPED ON. GM AND YOUNG'S HAVE REFUSED TO REFUND THIS DEFECTIVE VEHICLE.

DRIVING OVER A BRIDGE OVER WATER,A LOUD EXPLOSION HAPPENED.AT FIRST I DID NOT KNOW WHAT IT WAS,UNTIL I HEARD WIND BLOWING FROM THE MOON ROOF AREA.THE GLASS ON THE ROOF EXPLODED AND SENT GLASS DOWN WARD.LUCKILY I HAD THE MOON ROOF SHADE CLOSED OR THE GLASS WOULD HAVE CAME DOWN ON ME.I NEARLY LOST CONTROL. THE WEATHER WAS DRY WITH A OVERCAST SKY. THE TRAFFIC WAS VERY LIGHT.IT WAS NOT POSSIBLE FOR ANY FOREIGN MATTER TO HIT THE GLASS.I AMMEDIATELY DROVE THE VEHICLE TO THE GMC,WHERE I PURCHASED IT.( DIXIE BUICK GMC).MY VEHICLE ONLY HAS 2040 MILES ON IT.THIS WAS A SATURDAY AND THE SERVICE DEPT. WAS CLOSED. SPOKE TO THE SALES MANAGER,WHO SAID HE NEVER SEEN ANYTHING LIKE THIS BEFORE. HE GAVE ME A LOANER CAR TO USE. THE SERVICE DEPT. CALLED ON MONDAY,AND STATED THAT THE WAS NO DEFECT,AND I OR MY INSURANCE CO, WOULD HAVE TO PAY....