2016 GMC SIERRA DENALI Complaints

The contact owns a 2016 GMC Sierra Denali. The contact stated while driving 10 MPH, the rear windshield exploded without impact. The contact stated that the rear fogger had been activated independently. There were no injuries sustained. There was water located in the third taillight. The contact noticed there was mold and mildew in the taillight. The contact was seeking assistance from the insurance company. The contact called the local dealer and was informed that there were no recalls on the VIN related to the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 120,000.

BRAKE FAILURE ISSUE AT LOW SPEED. THIS HAPPENED IN TWO SEPARATE OCCURRENCES IN PARKING LOTS. THE BRAKE PEDAL BECAME VERY STILL AND REQUIRED GRABBING THE STEERING WHEEL AND USING IT TO PULL MYSELF DOWN HARDER ON THE BRAKE PEDAL TO GET THE VEHICLE TO STOP. THIS RESULTED IN GREATLY INCREASED STOPPING DISTANCE. FORTUNATELY NO VEHICLES OR PEOPLE WERE IN MY PATH DURING THESE OCCURRENCES. GM HAS SINCE REPAIRED MY VEHICLE. I HAVE SINCE RECEIVED A NOTICE THAT THEY ARE REPAIRING THIS ISSUE ONLY AFTER THE OWNER HAS A BRAKE FAILURE PROBLEM. THIS IS EXTREMELY UNSAFE AND IS UNACCEPTABLE. OWNERS NEED A SOLUTION AND DO NOT NEED TO WORRY THAT THIS ISSUE WILL ARISE AGAIN. IF I HIT A PERSON OR A VEHICLE, WILL GM PAY FOR MEDICAL BILLS, VEHICLE REPAIRS, LEGAL FEES? THIS TRUCK AS WELL AS MY LAST 2009 CHEVROLET SILVERADO HAD ISSUES WITH THE DRIVE TRAIN THAT GM CLASSIFIED AS NORMAL. THESE TRUCKS SHOULD NOT HAVE DRIVE SHAFT CLUNK WHEN STOPPING AT A TRAFFIC LIGHT. THESE VEHICLES HAVE MAJOR MECHANICAL CONCERNS AND THEIR QUALITY IS TRASH!

THE SEALS ON THE FRONT END SUSPENSION SHOCKS - SEALS ARE BROKEN ON BOTH FRONT SETS GREASE IS LEAKING OUT OF THEM AND CAUSING A ROUGH RIDE WITH NOISE WHEN YOU GO OVER BUMP

A FEW MINUTES AFTER STARTING TRUCK WITH REMOTE STARTER (DEFROSTER ON), A PORTION OF THE REAR WINDOW SHATTERED. SEEMS LIKE SEVERAL PEOPLE HAD THE SAME PROBLEM, APPARENTLY CAUSED BY THE DEFROSTER OVERHEATING THE GLASS.

AT 44,972 MILES I BEGAN TO EXPERIENCE LOSS OF BRAKING AT SLOW SPEEDS (10-15 MPH) ON MULTIPLE OCCASIONS. THE BRAKE PEDAL LOST ITS SPONGY FEEL AND FELT HARD AND DEAD. NO MATTER HOW MUCH PRESSURE I APPLIED TO THE BRAKE PEDAL, MY TRUCK CONTINUED TO ROLL FORWARD. IT WAS A SCARY FEELING TO LOSE CONTROL OF THE VEHICLE ESPECIALLY BECAUSE I HAD MY 10 YEAR OLD DAUGHTER IN MY TRUCK THE FIRST TIME IT HAPPENED. I HAD TO DEPRESS MY EMERGENCY BRAKE TO BRING THE VEHICLE TO A STOP. I PULLED THE TRUCK OVER AND TURNED OFF AND ON THE IGNITION AND THE BRAKE PEDAL REGAINED ITS SPONGY, NORMAL PRESSURE AND FEEL. THE BRAKES FELT NORMAL FOR ABOUT A WEEK OR SO AND I FELT MAYBE IT WAS AN ISOLATED INCIDENT UNTIL THE SAME PROBLEM OCCURRED WHEN I WAS DRIVING HOME FROM WORK IN CITY STOP AND GO TRAFFIC. I WAS DRIVING ABOUT 5-10 MPH TRYING TO COME TO A STOP BEHIND THE CAR IN FRONT OF ME WHEN THE TRUCK CONTINUED TO ROLL FORWARD. I BARELY HAD ENOUGH TIME TO DEPRESS THE EMERGENCY BRAKE TO STOP AND CAME VERY CLOSE TO HITTING THE CAR IN FRONT OF ME. IT WOULD HAVE BEEN AT VERY LOW SPEED, BUT NONETHELESS A COLLISION. I TOOK THE TRUCK TO THE DEALER TO HAVE THE PROBLEM CHECKED OUT AND ENDED UP HAVING TO REPLACE THE VACUUM PUMP ASSEMBLY FOR $656.50, PARTS AND LABOR. I DEFINITELY FEEL THIS IS A VALID SAFETY ISSUE THAT DESERVES INVESTIGATING AND DOING EITHER A SAFETY NOTICE TO VEHICLE OWNERS THAT COULD BE EFFECTED OR A RECALL. HAD I KNOWN ABOUT THE POTENTIAL ISSUE I WOULD HAVE BEEN BETTER ABLE TO DEAL WITH IT. IT REALLY SHOOK ME UP THE FIRST TIME IT HAPPENED. I DIDN'T FEEL SAFE DRIVING THE TRUCK EVEN 10 FEET AFTERWARDS.

AT 38,200 MILES, THE TRUCK EXPERIENCED A LOSS OF BREAK PRESSURE WHILE IN A PARKING GARAGE TRAVELING AT LOW SPEED CAUSING THE VEHICLE TO NARROWLY MISS HITTING A CONCRETE UPRIGHT. AFTER REALIZING THERE WAS A BREAK ISSUE, VEHICLE WAS ABLE TO BE CAREFULLY MOVED FROM THE PARKING GARAGE BY COASTING ON THE BREAK. AFTER RESTARTING THE VEHICLE, THE FIRST DEPRESS OF THE BREAK SEEMED TO GIVE FULL PRESSURE, BUT EACH SUBSEQUENT DEPRESS GAVE LESS AND LESS PRESSURE. VEHICLE HAD TO BE TOWED TO NEAREST DEALERSHIP AND IS CURRENTLY AWAITING DIAGNOSTIC. PROBLEM APPEARS TO BE PART OF ONGOING INVESTIGATION INTO BRAKE VACUUM PUMP FAILURE (NHTSA ACTION NUMBER: PE18012).

THE VEHICLE HAS EXCESSIVE STEERING PLAY. IT IS DANGEROUS TO DRIVE IN ICY CONDITIONS AND CAN BE NOTICED DRIVING THE VEHICLE STRAIGHT UNDER ALL DRIVING CONDITIONS ON DRY OR ICY PAVEMENT. I TOOK IT TO THE DEALER AND THEY PERFORMED SERVICE BULLETIN WORK AT MY EXPENSE TO FIX THE PROBLEM. THE SERVICE BULLETIN AND REWORK INVOLVED TIGHTENING THE STEERING BOX BACKLASH SCREW. THE PROBLEM WAS NOT FIXED AND STILL EXISTS. THIS IS A KNOWN PROBLEM, BUT MY VEHICLE WAS NOT INCLUDED ON THE RECALL LIST TO FIX THE ISSUE. IN ORDER TO FIX THE ISSUE, THE PITMAN ARM SHAFT NEEDS TO BE REPLACED WITH AN UPDATED VERSION GM PN 84240812 IF THE STEERING PLAY CANNOT BE ADJUSTED OUT. THIS IS THE CASE WITH MY VEHICLE AND THE PART WAS NOT REPLACED.

ON SEVERAL OCCASIONS I HAVE HAD DIFFICULTY WITH THE BRAKING SYSTEM. THE BRAKING SYSTEM BECOMES UNRESPONSIVE AFTER PUMPING THE BRAKES A FEW TIMES. ON SEVERAL OCCASIONS I'VE HAD THE BRAKE PEDDLE PUSHED TO THE FLOOR IN AN ATTEMPT TO STOP THE VEHICLE. THIS SEEMS TO HAPPEN MOSTLY AT SLOW SPEEDS, A GOOD EXAMPLE IS WHEN YOU ARE IN A TRAFFIC JAM AND ARE PRIMARILY USING THE BRAKES TO EDGE FORWARD AND STOP.

8 SPEED TRANSMISSION BUCKS, HESITATES, LURCHES FORWARD, CLUNKS, WHILE STARTUNG ACCELERATION OR COMING TO A STOP. I TRY TO KEEP A BIG GAP BETWEEN MY TRUCK AND CARS IN FRONT OF ME AT STOP SIGNS BECAUSE IT RANDOMLY LURCHES FORWARD AND I ALMOST HAVE BUMPED CARS IN FRONT OF ME. I HAVE HAD THE TRUCK INTO THE DEALER SO MANU TIMES TO FIX THE VIBRATION ISSUES AS WELL, THEY SAID 3 TIRES THAT CAME IN THE BRAND NEW TRUCK WERE DEFECTIVE SO I HAD TO REPLACE THEM ALL AND THE SHAKE IS STILL THERE, THE BALANCED, REBALANCED, ROAD FORCE BALANCE AND NOTHING WORKS. LAST TIME AT THE DEALER SAID IT IS PROBABLY THE TIRES, HE SAID DONT ROTATE THEM AGAIN AND WHEN THEY WEAR OUT HE WILL PUT ME IN A 'BETTER' TIRE. I AM PAST MY WARRANTY SO THE DEALER SAYS ANY COSTS ARE MY RESPONSIBILITT, IF THE NHTSA COULD PLEASE STEP IN TO ASSIST US TO MAKE GM FIC THEAE VEHICLES WHICH ARE A SAFETY HAZARD.

TRUCK SHIFTS REALLY HARD AND IS UNPREDICTABLE. I ALMOST DROVE THROUGH MY GARAGE DOOR THE OTHER DAY SHIFTING TO DRIVE FROM REVERSE. TRUCK WILL LUNGE FORWARD OR DELAY IN SHIFTING. THERE HAVE BEEN A FEW TIMES I'VE HAD TO SLAM ON THE BRAKES BEFORE I BACKED INTO SOMETHING. I HAVE BROUGHT IT IN 3-4 TIMES FOR THE ISSUE AND GMC WON'T REMEDY THE PROBLEM.