2018 GMC SIERRA 1500 Complaints

WHEN THE TRUCK IS DRIVEN FIRST THING IN THE MORNING THE TRANSMISSION SHIFTS FROM FIRST GEAR INTO SECOND GEAR THE TRANSMISSION SHIFTS VERY HARD OR HESITATES CAUSING THE DRIVER TO SURGE FORWARD ALMOST AS IF THE VEHICLE WERE HIT FROM BEHIND.

TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. WHILE ATTEMPTING TO ACCELERATE, THE CONTACT NOTICED A HARD SHIFT WITH THE EIGHT SPEED TRANSMISSION. THE CONTACT THOUGHT THE TRANSMISSION HAD FALLEN OFF THE VEHICLE. THE CONTACT FELT THIS WAS A DEFECT, ESPECIALLY DURING COLD STARTS IN THE MORNING. RAY SKILLMAN SOUTHSIDE BUICK GMC (8424 US-31, INDIANAPOLIS, IN 46227, (317) 497-0711) WAS CONTACTED AND PROVIDED A REPORT INDICATING THAT THIS WAS A NORMAL OCCURRENCE. THE MANUFACTURER WAS NOT CONTACTED. THROUGH ONLINE RESEARCH, THE CONTACT BELIEVED HE HAD A CASE WITH THE LEMON LAW. THE FAILURE MILEAGE WAS 4,768. *PM*JB

TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. THE CONTACT STATED THAT THE DRIVER'S SEAT MADE POPPING NOISES AND MOVED FROM SIDE TO SIDE WHILE THE VEHICLE MADE TURNS. THE MANUFACTURER ISSUED AN UNKNOWN TECHNICAL SERVICE BULLETIN, BUT IT WAS NOT COVERED UNDER A WARRANTY. THE VEHICLE WAS TAKEN TO COLONIAL BUICK GMC (3965 ATLANTA HWY, LOGANVILLE, GA 30052, (678) 922-9606), BUT THEY REFUSED TO INSPECT THE CONDITION OF THE SEAT. THE DEALER ALSO REFUSED TO NOTIFY THE MANUFACTURER. THE DEALER ACKNOWLEDGED THE SERVICE BULLETIN, BUT CLAIMED THAT THEY COULD NOT DUPLICATE THE FAILURE. THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 28,000.

TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. THE CONTACT STATED THAT THE TRANSMISSION SHIFTED FROM FIRST TO SECOND GEAR WHILE DRIVING 15 TO 20 MPH. ALSO, WHEN DRIVING ON THE HIGHWAY FOR A LONG PERIOD OF TIME, THE TRANSMISSION WOULD NOT DOWNSHIFT UNTIL THE VEHICLE CAME TO A STOP, AND WOULD THEN FAIL TO MOVE FORWARD. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO GOLLING BUICK GMC (1491 S LAPEER RD, ORION CHARTER TOWNSHIP, MI 48360, (248) 693-5900), BUT THE FAILURES COULD NOT BE DUPLICATED. ON ANOTHER OCCASION, WHEN THE VEHICLE WAS ENGAGED IN TWO WHEEL DRIVE, THE REAR END FAILED TO UNLOCK AND WOULD JERK. THE CONTACT DROVE THE VEHICLE TO THE SAME DEALER WHERE DIAGNOSTIC TESTING WAS COMPLETED, BUT A FAILURE COULD NOT BE FOUND. THE VEHICLE WAS NOT REPAIRED. THE CONTACT STATED THAT THE FAILURE RECURRED THREE TIMES. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURES. THE APPROXIMATE FAILURE MILEAGE WAS 16,000.

TRUCK SHIFT INTO GEAR VERY ROUGHLY. SHAKES WHEN DRIVING THROUGH ALL SPEEDS. FEELS AS IF SOMETHING IS FALLING OFF THE TRUCK.

BUCKING AND SURGING WHEN SWITCHING GEARS. HARD BANG WHEN TRYING TO SWITCH. SURGED FORWARD AT A COMPLETE STOP.

TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500 EQUIPPED WITH GOODYEAR WRANGLER SR-A TIRES, SIZE: 265/60R2. WHILE DRIVING 75 MPH, THE CONTACT NOTICED THAT ALL THE TIRES HAD BUBBLES. THE VEHICLE WAS TAKEN TO COULTER BUICK GMC TEMPE (7780 S AUTOPLEX LOOP, TEMPE, AZ 85284, (480) 448-2471) FOR DIAGNOSTIC TESTING WHERE IT WAS CONFIRMED THAT THE TREAD SEPARATED FROM THE TIRES, WHICH NEEDED TO BE REPLACED. THE TIRES WERE NOT REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND INFORMED THE CONTACT TO CALL GOODYEAR. THE MANUFACTURER PROVIDED CASE NUMBER: 1692419. THE APPROXIMATE VEHICLE FAILURE MILEAGE WAS 24,600. THE TIRE FAILURE MILEAGE WAS 932.

AFTER TRUCK HAS SET FOR A WHILE AND START TO TAKE OFF FROM A STAND STILL AND IT GOES TO SHIFT FROM 1ST TO 2ND IT WILL HARD SHIFT AND TRUCK WILL SOMETIMES LURCH FORWARD. WHEN ACCELERATING SLOWLY TRUCK WITH SHUTTER WHEN SHIFTING GEARS, ALMOST LIKE IT CAN'T DECIDE TO SHIFT TO THE NEXT GEAR. ONCE TRUCK IS WARMED UP THIS NO LONGER HAPPENS.

MY 2018 GMC SIERRA SLT'S BREAK PEDAL BECOMES EXTREMELY DIFFICULT TO PRESS, AND I CAN HEAR SOMETHING THAT SOUNDS LIKE AIR COMING FROM THE PEDAL. THIS HAPPENS ESPECIALLY AT LOWER SPEEDS.THIS CAUSED ME TO CRASH INTO A CONCRETE WALL AND DAMAGE MY TRUCK. MY TRUCK HAS ONLY 10,000 MILES.

NO TRANSMISSION POWER REGARDLESS OF THE GEAR SHIFTER POSITION. I TURNED THE ENGINE ON AND OFF SEVERAL TIMES TRYING TO GET A SOLUTION, NO LUCK. I RETURNED TO THE VEHICLE 5 MINUTES LATER AND DID GET IT TO MOVE,,,WOULD ONLY GO 25 MPH AT 3000 RPMS. I WAS IN THE MIDDLE OF WI NOT NEAR ANY MAJOR DEALERSHIP ON-STAR WAS USELESS SAYING I HAD A MAJOR ENGINE PROBLEM AND THE COMPUTER WAS TRYING TO PROTECT THE ENGINE. I WAS DIRECTED ME TO A CHRYSLER DEALER SHIP, WHO TOLD THEY COULD NOT GET ME IN FOR 2 WEEKS, SUGGESTED ANOTHER BRANCH WHICH WAS OVER 45 MILES AWAY. I DROVE 5 MILES TO A FRIENDS HOUSE AND WAS ABLE TO FIND A DEALERSHIP IN JANESVILLE, WI (FAGAN). WHEN I STARTED THE VEHICLE TO DRIVE TO JANESVILLE, THE TRANSMISSION DID WORK. FAGAN SPENT 2 HOURS WORKING ON IT, AND COULD NOT FIND A CAUSE FOR THE PROBLEMS, THEY CHECKED EVERY COMPUTER, COULD NOT DUPLICATE WHAT HAPPENED. THEY REPROGRAMMED ALL THE COMPUTERS. THEN IN CINCINNATI, OH THE POWER STEERING ASSIST WENT "OFF", WHILE STAIONARY. I TRIED RESTARTING SEVERAL TIMES TO NO AVAIL, DROVE THE 3 MILES LEFT TO THE G'KIDS HOUSE, NO POWER STEERING, TRAILER PROBLEM LIGHJT ON, NO RPM OR MPH NEEDLES MOVING. CALLED LOCAL DEALERSHIP (BORCHARDING) AND THEY SUGGESTED I DRIVE IT TO THEIR LOCATION 12 MILES AWAY. WHEN I STARTED IT, THE POWER STEERING WAS BACK ON, BUT THE UNIT WOULD NOT GET OUT OF 2ND GEAR, RAN 40 MPH AT 2500 RPM, WARNING LIGHTS ALL ON, ENGINE LIGHT STILL ON. NEXT MORING I STARTED THE VEHICLE, EVERYTHING WAS OKAY INCLUDING THE TRANSMISSION PROBLEM, BUT STILL HAD THE "CHECK ENGINE ON", THE DEALERSHIP KEPT IT (2) DAYS, INVOLVED GMC ENGINEERS, COULD NOT DETERMINE THE CAUSE FOR ALL THE PROBLEMS,INCLUDING LOSS OF "STEERING ASSIST". THEY DROVE IT OVER 50 MILES ON TWO TRIPS,COULD NOT DUPLICATE WHAT HAPPENED. THEY TOLD ME IT WAS SOME KIND OF COMPUTER PROBLEM, BUT COULD NOT DETERMINE, THEY RESET EVERYTHING AGAIN.