2015 GMC Sierra 1500 complaints

I PUSHED ON THE BRAKES WHEN SLOWLY PULLING INTO A PARKING SPOT AND THE BRAKES GOT SQUISHY AND BARELY STOPPED BEFORE I HIT ANOTHER PARKED CAR. THIS HAPPENED A FEW TIMES BEFORE I GOT THE VEHICLE HOME. THEN A MESSAGE POPPED UP THAT SAID "SERVICE BRAKE ASSIST SYSTEM". I TOOK THE TRUCK IN AND THEY SAID THEY WOULD NEED TO REPLACE THE VACUUM PUMP AND 2 BELTS.

BRAKE ASSIST WARNING LIGHT CAME ON WITH HARD BRAKE PEDAL AT LOW SPEED BRAKING. DOES NOT HAPPEN OFTER. BROUGHT TO DEALER AND HAD TESTED WITH NO TROUBLE FOUND. DEALER SAID NO RECALLS OR SERVICE BULLETINS ON ISSUE.

BRAKES NOT WORKING. HAD TO REPLACE THE VACUUM PUMP BELT, BRAKE BOOSTER VACUUM PUMP, AND AC BELT. COST $573.86. VEHICLE ONLY HAS 40K MILES. VERY DANGEROUS, VEHICLE WOULD NOT STOP WHEN APPLYING BRAKES

AT LOW SPEEDS BREAKING BECOMES EXTREMELY DIFFICULT LEADING TO LONGER STOPPING DISTANCE.

REMOTE STARTED CAR. UPON ENTERING AND TURNING IGNITION ON A STRONG ELECTRICAL BURNING SMELL WAS NOTICED. WHITE SMOKE WAS SEEN EMITTING FROM BASE OF DRIVER SIDE REAR WINDOW BEHIND MY CHILDS CAR SEAT. MOMENTS LATER A LOUD BANG WAS HEARD AND WINDOW SHATTERED. VEHICLE WAS STATIONARY AT THE TIME AND RUNNING FOR LESS THAN 5 MINUTES.

BRAKES FADE AT LOW SPEEDS, VEHICLE CONTINUES TO TRAVEL WHILE THE BRAKES ARE APPLIED. HARD BRAKE PEDAL PRESSURE MUST BE APPLIED TO STOP.

I WAS ON A MAJOR HIGHWAY TRAVELING WHEN THE TRAFFICE BECAME STOP AND GO. AS I WAS TRAVELING IN HEAVY TRAFFIC FOR ABOUT 5 MINUTES, MY BRAKE BECAME STIFF AND WOULD NOT ALLOW ME TO STOP AS NORMAL. I WAS ABLE TO STOP JUST SHORT OF REAR-ENDING THE VEHICLE IN FRONT OF ME, HOWEVER IT WAS MERELY BY INCHES. CONSIDERATIONS : I WAS ON A SLIGHT DECLINE AND MY VEHICLE HAS START ASSIST WHERE THE BRAKE PEDAL REMAINS STIFF WHEN IN EFFECT, IT FELT LIKE THIS ACTIVATED. I CONTINUED TO INCREASE PRESSURE THROUGH WHICH I THOUGHT I HEARD THE ABS ACTIVATE AND THE VEHICLE STOPPED.

BRAKE PEDAL OR THAT INCREASED EFFORT IS NEEDED TO DEPRESS THE BRAKE PEDAL. ALSO, IN SOME CASES A TICK OR TICKING NOISE MAY BE HEARD, WHICH MAY SOUND LIKE AN EXHAUST MANIFOLD LEAK.

AT LOW SPEEDS BREAK PEDAL WILL NOT DEPRESS AND I HAVE A HARD TIME STOPPING THE TRUCK. I ALMOST HIT A CAR YESTERDAY AND AFTER DOING SOME RESEARCH FOUND THAT THE VACUUM PUMP FAILURE IS A KNOWN PROBLEM. THIS IS EXTREMELY SCARY AND DANGEROUS. SOMEONE COULD EASILY HIT A PEDESTRIAN. MY TRUCK HAS LESS THAN 50,000 MILES, WHICH SEEMS TO BE THE AVERAGE FOR THIS PROBLEM.

SEVERAL TIMES AT LOW SPEED MANEUVERING THE BRAKE PEDAL BECAME HARD, REQUIRED INCREASED EFFORT TO DEPRESS, AND BRAKING DISTANCES WERE INCREASED. OCCURS RANDOMLY AND WITHOUT WARNING. NO ACCIDENTS YET, BUT SEVERAL CLOSE CALLS. VEHICLE HAS ONLY 44,000 MILES.

BRAKE PEDAL GOES SOFT AND CAN HIT THE FLOOR ON OCCASION. MOSTLY HAPPENS WITH IN REVERSE. 40K MILES. ALSO TRANSMISSION SHIFTS ARE ERRATIC. RPM CAN SHOOT UP BETWEEN SHIFTS.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. THE CONTACT STATED THAT WHEN THE BRAKE PEDAL WAS APPLIED, THE VEHICLE FAILED TO RESPOND. THE CONTACT HAD TO APPLY FORCE TO THE BRAKE PEDAL TO STOP THE VEHICLE. LAURA BUICK GMC (903 N BLUFF RD, COLLINSVILLE, IL 62234, (618) 344-0121) DIAGNOSED THAT THE BRAKE VACUUM PUMP MAY NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT WAS UNCERTAIN IF THE FAILURE WAS RELATED TO NHTSA CAMPAIGN NUMBER: 14V339000 (STEERING, SERVICE BRAKES, HYDRAULIC). THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN AND FAILURE MILEAGE WERE NOT AVAILABLE.

AT SLOW SPEEDS THE BRAKE ASSIST DOES NOT WORK. REQUIRES MUCH MORE EFFORT TO STOP VEHICLE. SEEMS RELATED TO FAULTY VACUUM PUMP AS MENTIONED BY OHTERS ON INTERNET FORUMS.

VEHICLE WAS PARKED AT WORK. STARTED THE VEHICLE TO GO HOME AND BACKED OUT OF SPACE AND THAT IS WHEN THERE WAS NO STEERING AVAILABLE. I COULD ONLY GO BACK. SO BACKED IT INTO ANOTHER PARKING SPACE, AND HAD TO LEAVE THE VEHICLE UNTIL THE NEXT MORNING WHEN I HAD IT TOWED TO THE NEAREST GM DEALERSHIP. THEY NOW TELL ME THAT THE MODULE IS DEAD AND THAT IT WILL COST US TO REPLACE THIS. ALSO WHEN REPLACING THE MODULE, IF THEY FIND THE STEERING RACK NEEDS TO BE REPLACED, WE WILL BE RESPONSIBLE FOR THIS AS WELL, ON TOP OF LABOR CHARGES. I HAD ONLY RECENTLY PURCHASED THIS VEHICLE 7 MONTHS AGO. I AM VERY DISAPPOINTED WITH THE RESPONSE FROM GMC IN THIS MATTER.

WHEN APPLYING BRAKES AFTER FIRST PUSH THE PEDAL GETS HARD AND DOESN'T STOP HARDLY. DOES IT EITHER GOING FORWARD OR REVERSE. HAS HAPPENED NUMEROUS TIMES SINCE TRUCK WAS BOUGHT NEW.

HEADLIGHTS ARE POOR. LOW AND HIGH BEAMS DO NOT ILLUMINATE THE ROAD EFFECTIVELY IN RURAL AREAS

I WAS WARMING THE TRUCK UP IN THE MORNING WITH THE AUTO START, PARKED, AND HAD THE AUTO DEFROST TURNED ON FOR THE REAR. WHEN I ENTERED THE TRUCK AND CLOSED THE DOOR THE REAR PASSENGER WINDOW THAT IS FACING THE BED, SHATTERED. I'M ASSUMING THE DEFROST IS RUNNING TOO HOT AND WEAKENED THE GLASS OR SOMETHING RELATED TO THE ISSUE. I KNOW OF SEVERAL OTHER PEOPLE THAT HAVE THIS PROBLEM AS WELL. HTTPS://WWW.GM-TRUCKS.COM/FORUMS/TOPIC/209824-2017-SIERRA-DENALI-REAR-WINDOW-EXPLODED/?PAGE=5

LOSS OF POWER BRAKES WHEN CREEPING AND APPLYING BRAKES SEVERAL TIMES IN A SHORT TIME. TESTED AND CHANGED VACUUM PUMP.

PAINT PEELING DOWN TO PRIMER COAT IN VARIOUS AREAS ON THE TRUCK. NOT CHIPS, DENTS OR DINGS. THIS IS PAINT FAILURE.

PROJECTOR STYLE HEADLIGHTS THAT CAME FACTORY ARE TOO DIM MAKING IT VERY DIFFICULT TO DRIVE AT NIGHT AND UNSAFE. LIGHTS ARE NOW POWERFUL ENOUGH TO LIGHT UP THE ROAD.

REAR POWER SLIDING WINDOW IMPLODED AFTER REAR WINDOW DEFROSTER WAS ON FOR LESS THAN 10 MINUTES. CAR WAS IN MOTION AT HIGHWAY SPEED WHEN A SOUND LIKE A RIFLE SHOT OCCURRED FOLLOWED WITH A CLEAR SOUND OF AN AIR LEAK INTO THE CAB. OUTSIDE TEMPERATURE WAS 25 DEGREES.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING AT LOW SPEEDS OR WHEN THE GEAR SELECTOR WAS IN REVERSE, THE BRAKE PEDAL TRAVELED TO THE FLOORBOARD. THE CONTACT MENTIONED THAT THE FAILURE OCCURRED PERIODICALLY. THE VEHICLE WAS TAKEN TO EVERETT BUICK GMC (21115 I-30 FRONTAGE RD, BRYANT, AR 72022, (501) 303-4393) TO BE DIAGNOSED, BUT NO FAILURE WAS FOUND. THE DEALER STATED THAT THE BRAKES WERE "PERFECT". THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VIN WAS NOT PROVIDED. THE FAILURE MILEAGE WAS 45,000.

I WAS DRIVING DOWN A HILL AT ABOUT 15 MILES AN HOUR AND WHEN I WENT TO PRESS THE BRAKE PEDAL I HEARD A NOISE AND THE BRAKE PEDAL WENT TO THE FLOOR AND TRUCK WOULD NOT STOP. I HAD TO SWERVE OFF THE ROAD TO AVOID A COLLISION. AFTER, THE BRAKE PRESSURE RETURNED WHILE DRIVING, BUT WHEN STOPPED IT WOULD LOSE PEDAL FEEL AND GO BACK TO THE FLOOR. AFTER READING ARTICLES IT WAS OBVIOUS THE VACUUM PUMP WAS FAILING. I LIMPED THE TRUCK HOME AND TOOK IT TO THE DEALERSHIP AND AM WAITING TO HEAR BACK.

THERE IS A KNOWN BRAKE PROBLEM CAUSED BY FAULTY VACUUM PUMP. WITH THE VACUUM PUMP FAILING THERE WILL BE LOSS OF ASSISTED BRAKING. SOME PEOPLE HAVE NOTED REQUIRING 2 FEET TO STOMP ON THE BRAKES TO STOP THE TRUCK. THE DANGEROUS BRAKING PROBLEM SEEMS TO HAPPEN DURING LOW SPEEDS. SOME MEMBERS ON THE FORUMS HAVE MENTIONED GETTING INTO ACCIDENTS. GMC DOES NOT COVER THE VACUUM PUMP UNDER THEIR WARRANTY WHICH IS RIDICULOUS. I HAVE LISTED SOME FORUM THREADS AS PROOF OF NOT JUST ME HAVING THIS ISSUE. HTTPS://WWW.SILVERADOSIERRA.COM/ECOTEC3-5-3L-V8/BRAKE-BOOSTER-VACUUM-PUMP-FAILURE-T686609.HTML HTTPS://WWW.SILVERADOSIERRA.COM/BRAKES/ROCK-HARD-BRAKE-PEDAL-2014-LOW-SPEED-T595097.HTML HTTPS://WWW.GM-TRUCKS.COM/FORUMS/TOPIC/204871-VACUUM-PUMP-GOING-OUT/ HTTPS://FOX6NOW.COM/2018/11/23/GM-UNDER-INVESTIGATION-FOR-FAULTY-BRAKE-VACUUM-PUMPS/ EVEN THE GOVERNMENT IS INVESTIGATING.

IT STARTED HAPPENING A WEEK OR SO AGO WHERE WHEN IN REVERSE OR AFTER SWITCHING FROM REVERSE TO DRIVE AND TRYING TO BRAKE THE PEDAL WOULDN'T COMPRESS, IT WAS AS IF THEY WERE LOCKING UP ON ME. I WOULD HAVE TO PUT MOST OF MY BODY WEIGHT ON THE PEDAL TO EVEN GET THE TRUCK TO STOP, TO THE POINT WHERE I ALMOST RAN INTO MY NEIGHBORS CAR BACKING OUT OF THE DRIVEWAY. IT SEEMED TO MAINLY HAPPEN AT SLOWER SPEEDS, IN BOTH DRIVE AND REVERSE AS IT HAPPENED ON MORE THAN ONE OCCURRENCE. LUCKILY I DECIDED TO TAKE IT TO THE GMC DEALER BEFORE ANYTHING SERIOUS HAPPENED, BUT THIS IS A HUGE SAFETY CONCERN AND I FEEL IT NEEDS TO BE ADDRESSED. THE DEALER ALSO KNEW EXACTLY WHAT THE ISSUE WAS BEFORE I COULD GIVE THEM ANY INFORMATION, SO IT SEEMS LIKE THIS IS A COMMON PROBLEM. THEY REPLACED MY VACUUM PUMP AND WE WILL SEE IF THAT FIXES THE PROBLEM.

BRAKE PUMP WENT OUT ALMOST RAN INTO A POLE. READING ONLINE AND SEE A LOT OF PEOPLE HAVING THE SAME PROBLEM. ANGRY!!

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING 7 MPH, THE VEHICLE STALLED AND THE SERVICE STABILITRAK WARNING INDICATOR ILLUMINATED. THE CONTACT MOVED THE GEAR SHIFTER INTO NEUTRAL AND WAS ABLE TO COAST THE VEHICLE TO THE SIDE OF THE ROAD. THE VEHICLE FAILED TO RESTART. THE CONTACT CALLED CLASSIC CHEVROLET SUGAR LAND AT (281) 969-4132 (LOCATED AT 13115 SOUTHWEST FWY, SUGAR LAND, TX 77478) AND WAS INFORMED TO CHECK THE BATTERY. THE VEHICLE WAS RESTARTED AND WAS ABLE TO DRIVE NORMALLY; HOWEVER, THE FAILURE RECURRED THREE TIMES. IN ADDITION, THE AIR BAG WARNING INDICATOR ILLUMINATED AND THE PARK ASSISTANCE BUTTON WAS COMPLETELY DISABLED. THE VEHICLE WAS TAKEN TO CLASSIC CHEVROLET SUGAR LAND WHERE IT WAS DIAGNOSED THAT THE GROUND G218 CAUSED A LOW VOLTAGE TO THE BODY CONTROL MODULE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND PROVIDED CASE NUMBER: [XXX]. THE APPROXIMATE FAILURE MILEAGE WAS 91,000. 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).

WHILE DRIVING AT SLOW SPEEDS, THE BRAKE PEDAL BECAME VERY HARD TO PUSH. THIS CAUSED THE TRUCK TO BE DIFFICULT TO STOP, WHICH CAUSED ME TO ALMOST REAR-END THE VEHICLE IN FRONT OF ME. THIS HAS HAPPENED SEVERAL TIMES. IN RESPONSE TO THIS, THE GMC DEALER REPLACED THE VACUUM PUMP.

I WAS PULLING A TRAVEL TRAILER AT 55 MILES AN HOUR, I CAME OVER A HILL TO AN INTERSECTION AND I HAD LOST MY BRAKES. I MANAGED TO FINALLY COME TO A STOP. I DISCONNECTED MY TRAILER. I WENT TO A LOCAL GMC DEALERSHIP, AND THEY DID NOT HAVE TIME TO REPAIR MY VEHICLE. I TOOK IT TO AN INDEPENDENT REPAIR SHOP,AND THEY SAID MY VACUUM BRAKE BOOSTER PUMP HAD FAILED. THEY INSTALLED A NEW VACUUM BREAKER BOOSTER PUMP FOR THE NEXT DAY. THIS WAS A VERY DANGEROUS SITUATION, AS I LOST 95% OF MY BREAKING POWER WHILE PULLING MY TRAVEL TRAILER.

HEADLIGHTS - LOW ARE DIM AND NOT MUCH SIDE VISIBILITY. TRAVELING ON RURAL BACK ROADS AT NIGHT IS DANGEROUS. DEER WALKED OUT IN ROAD AND I WAS NOT ABLE TO SEE IN TIME. SECOND DEER I HIT WITH THIS TRUCK, ONLY HIT ONE OTHER DEER IN MY LIFE.

WHEN BACKING UP, AFTER REPEATEDLY PRESSING THE BRAKE PEDAL, THE BRAKE PEDAL WENT TO THE FLOOR AND WOULD NOT STOP THE TRUCK. THE TRUCK ROLLED UNCONTROLLABLY DOWN THE DRIVEWAY AND LUCKILY DID NOT HIT ANYONE OR ANYTHING. IT COULD HAVE KILLED SOMEONE THOUGH. THE SAME ISSUE OCCURRED IN A PARKING LOT WHEN BACKING UP IN AN OPEN SPACE. AFTER REPEATED HITTING THE BRAKE PEDAL TO LINE UP THE VEHICLE, THE BRAKES STOPPED WORKING AN I COULD NO LONGER STOP THE TRUCK.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING 15-25 MPH, THE BRAKE PEDAL WAS DEPRESSED, BUT WAS DIFFICULT TO SLOW DOWN OR STOP THE VEHICLE EFFICIENTLY. THE CONTACT STATED THAT THE BRAKE PEDAL WAS VERY STIFF. THE VEHICLE WAS TAKEN TO KUNES COUNTRY CHEVROLET BUICK GMC OF ELKHORN (LOCATED AT 1350 WI-67, ELKHORN, WI 53121, (262) 725-4068) WHERE IT WAS DIAGNOSED THAT THE VACUUM PUMP WAS WEAK. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 68,800. *TT CONSUMER STATED VEHICLE WAS REPAIRED. *JB

WHEN ACCELERATING TRUCK WILL SAG AND OR HESITATE. WHEN YOU SLOW DOWN AND TRY TO SPEED UP THE TRUCK WILL HESITATE FOR 5 OR MORE SEC. BEFORE SPEED BACK UP GM SAID THAT THIS IS DUE TO ZERO TORQUE TO ME THIS IS A SAFETY HAZARD

I PULLED INTO A PARKING SPOT AND LOST THE ABILITY TO STOP MY TRUCK. THE BRAKES LOCKED UP AND I COULDN'T PUSH DOWN ON THE BRAKE PEDAL HARD ENOUGH TO GET THE TRUCK TO STOP. I WAS GOING SLOW ENOUGH TO USE THE CURB IN THE SPOT FOR IT TO STOP ME FROM HITTING ANYTHING. I HAD MY CAR TOWED TO A REPAIR SHOP AND THEY CONFIRMED THAT THE BRAKE VACUUM PUMP FAILED AND HAD TO BE REPLACED ALONG WITH THE MASTER CYLINDER AND BECAUSE THE VACUUM PUMP WAS THE INITIAL POINT OF FAILURE, THE REPAIR WAS NOT COVERED UNDER MY WARRANTY.*DT VEHICLE REPAIRED *JB

I FIRST NOTICED THE PROBLEM WHEN I WAS BACKING DOWN THE RAMP TO LAUNCH MY BOAT. GENERALLY I CAN LIGHTLY TOUCH THE BRAKES AND THE TRUCK WILL STOP IMMEDIATELY. BUT THIS TIME IT DID NOT AND I HAD TO PUMP MY BRAKES MULTIPLE TIMES BEFORE IT FINALLY CAME TO A STOP. I WAS QUIT ALARMED BUT KINDA BLEW IT OFF. THE TRUCK HAD TRAVELED ABOUT SIX FEET FURTHER THAN I HAD ANTICIPATED. ABOUT A WEEK LATER I STOPPED TO GO THROUGH MY GATE AT MY FARM AND WHEN I DROVE THROUGH THE GATE WHICH IS ON A SLIGHT HILL DECLINE IT HAPPENED AGAIN. I WENT TO TOUCH THE BRAKES TO STOP AND ENDED UP PUMPING THE BRAKES VIOLENTLY IN ORDER TO GET THE TRUCK TO STOP. THIS TIME I TRAVELED ABOUT SEVEN OR EIGHT FEET BEFORE COMING TO A FULL STOP. AFTER THIS INCIDENT I WAS CONVINCED TO TAKE IT TO THE DEALERSHIP. IT OCCURRED ONCE MORE DURING THAT TIME. THE DEALERSHIP SAID IT WAS A MALFUNCTION IN THE VACUUM PUMP THAT WORKS OFF OF THE MAIN ENGINE AND OIL FROM THE ENGINE HAD CONTAMINATED THE BRAKING SYSTEM. I HAD TO HAVE REPLACED A PUMP, BOOSTER, CYLINDER, PIPE, AND FLUID FOR A TOTAL OF 1266.33 DOLLARS. THAT INVOICE NUMBER IS 208452. I FEEL THIS IS A SERIOUS SAFETY ISSUE WHEN YOU THINK YOUR VEHICLE IS GOING TO STOP AND IT DOES NOT. THIS CAN CAUSE A PANIC SITUATION!

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING 25 MPH, THE CONTACT HEARD A GRINDING NOISE EMERGING FROM THE FRONT DRIVER SIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO HENNESSY BUICK GMC (7261 JONESBORO RD, MORROW, GA 30260) WHERE IT WAS DIAGNOSED THAT THE BRAKE VACUUM PUMP NEEDED REPLACEMENT. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND PROVIDED CASE NUMBER: 8-4881978797. THE VEHICLE WAS REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 102,000.

WHEN DRIVING FORWARD OR BACKWARDS AT LOW SPEED BRAKE PEDAL SEEMS LIKE IT LOCKS UP AND IT IS EXTREMELY HARD TO STOP THE VEHICLE I HAD TO PRESS THE PARKING BRAKE A COUPLE TIMES JUST TO GET IT TO STOP

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING 5 MPH, THE BRAKES SEIZED. WHILE DRIVING OVER 5 MPH, THE BRAKES PERFORMED NORMALLY. THE VEHICLE WAS TAKEN TO BAGLIER BUICK GMC (248 PITTSBURG RD, BUTLER, PA 16001, 742-602-4676) WHERE IT WAS DIAGNOSED THAT THE VACUUM PUMP FRACTURED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 49,000. THE VIN WAS UNKNOWN. *BF

ON NOVEMBER 17TH 2018 MY BRAKES WENT OUT ON A 2015 GMC 1500 AT 35 MPH STOPPING AT A RED LIGHT WHICH JUST TURNED GREEN .I SWITCHED LANES AND ALMOST CRASHED. I HAD MY GRANDCHILDREN IN THE VEHICLE ALONG WITH MY WIFE. THE VEHICLE NEED TO BE TOWED TO A GMC DEALER. THE DIAGNOSES WAS THE VACUUM PUMP TOTAL FAILURE THE BRAKE PEDAL WAS HARD WITH NO STOPPING POWER. MY GMC HAD 34000 MILES ON IT . NOW I HAVE A TOW BILL AND REPAIR COST FOR A PART GM WILL NOT RECALL. THIS WAS REPORTED TO GM AND THEY OPENED A CASE AND CLOSED IT. THE SAID THEY WOULD GIVE A HUNDRED DOLLAR COUPON. THIS IS RIDICULOUS SOME ONE IS GOING TO GET KILLED BECAUSE OF THIS FAULTY PART. I THOUGHT THEY WOULD BE WILL TO HELP AND MAKE THINGS RIGHT . GM CASE 8-4845403712 THANKS THIS CORPORATION NEEDS TO BE RESPONSIBLE.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING 10 MPH, THE CONTACT PULLED INTO HIS DRIVEWAY AND HEARD AN ABNORMAL NOISE COMING FROM THE STEERING WHEEL. THE CONTACT TOOK THE VEHICLE TO GARBER BUICK GMC (5255 US-1, FORT PIERCE, FL 34982, (772)467-0835) TO BE DIAGNOSED, BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE FAILURE RECURRED. THE CONTACT TOOK THE VEHICLE BACK TO THE SAME DEALER WHERE IT WAS DIAGNOSED THAT THE RACK AND PINION FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT AN INVESTIGATION WOULD TAKE PLACE TO DETERMINE THE CAUSE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 27,548.

AT SLOW SPEED BACKING UP OR MOVING FORWARD, I LOSE POWER ASSIST FOR BRAKING, HAVING TO ALMOST STAND ON THE BRAKES TO STOP. THIS HAPPENS INTERMITTENTLY. STREET OR PARKING LOT.

I BOUGHT THIS TRUCK IN DEC.2017 SENSE MARCH/ APRIL OF 2018 I HAVE EXPERIENCED AT LEAST 8 TIMES MAYBE MORE AND JUST LAST WEEK. THE BRAKE PEDAL HAD LOST IT'S POWER ASSIST. THIS SEEMS TO HAPPEN IN VERY CLOSE SLOW SPEED TRAFFIC OR IN PARKING LOTS WHEN PARKING. THE WAY I SOLVE THIS PROBLEM IS TO PUT TRUCK IN NEUTRAL AND INCREASE RPM'S OR YOU 2 FEET ON THE BRAKE PEDAL ITHE POWER ASSIST WILL SOON RETURN, THESE SITUATION COULD BE A REAL PROBLEM AT HIGHER SPEEDS. I HAVE CHECKED THE VACUUM BOOSTER FOR LEAKS, BRAKE FLUIL AND DONE A FRONT AND REAR BRAKE JOB. THE WEEK OF NOV. 18 I SAW AN ARTICLE IN THE BOSTON GLOBE ABOUT THIS SPECIFIC PROBLEM AND UNDER INVESTIGATION. I CONTACTED MY LOCAL DEALER CENTRAL BUICK AND GMC IN NORWOOD MA..ON NOV 26.2018 THE SERVICE WRITER SAID HE KNEW NOTHING ABOUT THIS PROBLEM OR COMPLAINTS NOR THE ONGOING INVESTIGATIONS. HIS THOUGHT WAS BRING THE TRUCK IN AND WE WILL CHECK AND REPAIR AT MY EXPENSE. SADLY I WISH HIS RESPONSE WAS DIFFERENT . THANKYOU D.S.M.

BRAKE SYSTEM FAILURE. BRAKE PEDAL WOULD DEPRESS TO THE FLOOR AND STOP WORKING AS THE TRUCK WAS SLOWING DOWN. THIS WOULD HAPPEN IN ALL BRAKING SITUATIONS. I TOOK THE TRUCK TO THE DEALERSHIP AND THEY STATED THE VACUUM PUMP FAILED. $1142.67 FOR REPAIR! NOV 15/ 2018.

EXPERIENCED AN UNUSUAL REACTION TO BREAKING. A FEW DAYS LATER I HAD BRAKE WARNING LIGHTS ON THE DASH. TOOK THE VEHICLE TO THE DEALER AND THEY HAD TO REPLACE THE CYLINDER BRAKE MASTER AND THE BRAKE BOOSTER AND ADD NEW FLUID. WHICH I PAID FOR. NOW I SEE THERE MAY BE OTHER ISSUES AS THERE ARE OTHER COMPLAINTS YOU'RE INVESTIGATING. I WANT TO PUT MINE ON RECORD.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING AT A LOW SPEED OR WHILE IDLING, THE BRAKE PEDAL WAS DEPRESSED AND FAILED TO ENGAGE. THE CONTACT STATED THAT THE FAILURE WAS ALSO EVIDENT WHILE DRIVING IN REVERSE AT A LOW SPEED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE LOCAL DEALER AND THE MANUFACTURER WERE NOT NOTIFIED. THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 14V339000 (STEERING, SERVICE BRAKES, HYDRAULIC). THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 55,000. *TT*JB

WHEN I PRESS ON THE BRAKES, IT FEELS AS THOUGH THE MASTER CYLINDER IS GONE AND IT IS THE MANUAL TYPE DRUM BRAKES THAT HAS AIR IN THE LINE. IT TAKES EVERYTHING I HAVE TO PRESS THEM AND PRAY IT STOPS!! THE VEHICLE IS ALWAYS IN MOTION WHEN DETECTING THIS PROBLEM AND SEEMS TO OCCUR MORE REPEATEDLY IF THE BRAKES ARE PUMP QUICKLY IN SUCCESSION BEFORE APPLYING BRAKES OR WHEN THE BRAKES ARE PRESSED FOR AN EXTENDED AMOUNT OF TIME THEN YOU RELEASE AND REPRESS IT WANT STOP. ANOTHER ISSUE IS MY LANE ID WARNING. WHEN TURNED ON AT THE BUTTON, IT JUST BEEPS AT ME AND SHOWS SERVICE LIGHT. WHEN I FIRST TOOK IT IN WITH THE PROBLEM, THE DEALERSHIP CALLED ME AND SAID ALL FIXED, BUT IT DID IT BEFORE I LEFT THE PARKING LOT. THEY HAD MY TRUCK ALL DAY FOR THE ISSUE, PUT ME OUT OF A VEHICLE AND THEN SAID THEY WOULD NEED FOR EXTENDED TIME TO REPAIR BUT DIDN'T KNOW THERE WAS PROBLEM. HOW DO YOU MAKE THAT DETERMINATION WHEN YOU TOLD ME ITS REPAIRED. I JUST TURNED IT OFF AND HAVEN'T USED IN 2 YEARS.

ON SEVERAL OCCASIONS THE BRAKE PEDAL BECOMES DIFFICULT TO DEPRESS. RELEASING THE PEDAL AND DEPRESSING AGAIN CORRECTS THE PROBLEM. TODAY WHILE EXITING A PARKING SPACE AT LOW SPEED TO AVOID COLLIDIONG WITH ANN APPROACHING VEHICLE IT TOOK BOTH FEET TO DEPRESS PEDAL. I AM A 200 LB. MALE. I AM NOT SURE A SMALL FEMALE COULD HAVE CORRECTED THE FAILURE IN A TIMELY MANNER.

AT SLOW SPEEDS FROM A STOP IF YOU LET OFF THE BREAK PEDAL AND IMMEDIATLY REAPPLY THERE SEEMS TO BE EXTREMELY HARD BREAKING. ALMOST IMPOSSIBLE TO STOP THE CAR.

BRAKES APPEAR TO LOSE BOOST WHEN STOPPING. HAVE TO PRESS PEDDLE WITH BOTH FEET. THIS HAS HAPPENED ON THREE SEPARATE OCCASIONS.

BRAKES BECOME VERY HARD TO PRESS IN TRAFFIC AND WHILE BACKING UP. THE CONDITION WORSENS WITH MULTIPLE PRESSES OF THE BRAKE PEDAL. THE STOPPING DISTANCE OF THE TRUCK IN INCREASED EVEN WITH INCREASED PRESSURE ON THE PEDAL. THE TRUCK HAS 28,463MI. I CONTACTED A DEALERSHIP AND THEY WILL NOT COVER THIS REPAIR. I HAVE ORDERED THE PARTS AND WILL PERFORM THE REPAIR MYSELF. GM HAS ISSUED A SERVICE BULLETIN ON THIS PIT5361B.