2016 GMC Sierra Denali Brakes Problems

APPARENTLY, THE 8 SPEED AUTOMATIC TRANSMISSION HAS ISSUES WITH WIRING HARNESS AND HARD SHIFTING WHICH THE MANUFACTURER HAS 18 SERVICE BULLETINS OUT ON YET STILL WILL NOT RECALL AND FIX PROBLEMS. ALSO THE BRAKE SYSTEM IS FAULTY AND UNSAFE IT LOSES PRESSURE AND EVEN BRAKING AT VARIOUS SPEEDS. AFTER TAKING IT TO THE DEALERSHIP THEY CAN NOT FIGURE OUT WHY AND SAY IT IS VARIOUS PARTS AND SHOULD BE RECALLED BUT IT IS NOT AS OF YET. GM KNOWS OF THESE ISSUES AND THE 1000S OF DOLLARS CUSTOMERS HAVE TO PAY FOR THESE REPAIRS. THIS IS WRONG AND NEEDS TO BE RECTIFIED.

NHTSA ID

11363769

Incident

Sep 30, 2020

Mileage

77,000 mi

TL* THE CONTACT OWNS A 2016 GMC SIERRA DENALI. THE CONTACT STATED THAT WHILE THE VEHICLE WAS BEING REVERSED AT UNDER 5 MPH, THE BRAKE PEDAL WAS DEPRESSED BUT FAILED TO OPERATE AS INTENDED. THE CONTACT CRASHED INTO A TREE WHICH CAUSED DAMAGE TO THE PASSENGER'S SIDE DOOR, FENDER AND SIDE MIRROR. THERE WAS NO INJURIES. THE VEHICLE WAS TAKEN TO VAN BUREN BUICK GMC LOCATED AT 2257 JERICHO TURNPIKE, GARDEN CITY PARK, NY 11040, (516) 535-9508, TO BE DIAGNOSED WHICH WAS STILL PENDING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND INFORMED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 78,000.

NHTSA ID

11240305

Incident

Jul 29, 2019

Mileage

78,000 mi

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!

NHTSA ID

11207803

Incident

Jan 31, 2019

Mileage

27,000 mi

THE BRAKES DID NOT WORK AT SLOW SPEED GOING FORWARD OR IN REVERSE

NHTSA ID

11205791

Incident

May 6, 2019

Mileage

67,000 mi

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.

NHTSA ID

11191062

Incident

Mar 10, 2019

Mileage

44,972 mi

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).

NHTSA ID

11182193

Incident

Feb 23, 2019

Mileage

38,200 mi

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.

NHTSA ID

11160788

Incident

Dec 6, 2018

Mileage

50,500 mi

LOOSES BRAKE ASSISTANCE IN PARKING LOT AND SOMETIMES ON THE HIGHWAY,CHECK ENGINE LIGHT COMES ON WITH VARIOUS CODES THE MOST COMMON IS MISFIRE ON STARTUP IT HAPPEN IN DIFFERENT OCCASIONS.

NHTSA ID

11093803

Incident

Apr 15, 2018