2016 GMC Sierra 1500 complaints

THIS ISSUE BEGAN LAST YEAR IN NOV. 2018. WE WERE IN TRAFFIC AND STOPPING AND GOING UNTIL WE COULDN'T STOP AND THE BRAKE PEDAL WAS TO THE FLOOR AND THE CAR WAS STILL MOVING. WE BROUGHT THE TRUCK TO THE DEALER AND THEY SAID IT WAS THE BRAKE PADS. WE PAYED $1700 TO REPLACE ALL THE PADS. THE OTHER DAY (3 MONTHS WITH THE NEW BRAKES) THE ISSUE HAPPENED AGAIN AND THE TRUCK WOULDN'T STOP, ALMOST CAUSING AN ACCIDENT THAT COULD HAVE SERIOUSLY INJURED THE ELDERLY LADY IN FRONT OF US AND OURSELVES. THIS ISSUE IS GETTING WORSE AND PRESENTS A HAZARD TO US AND EVERYONE ON THE ROAD. THIS ISSUE OCCURS AT RANDOM TIMES, SLOWING TO GET OFF AN EXIT RAMP, IN TRAFFIC, STOPPING FOR CROSS WALKERS, ETC. WE BROUGHT IT TO THE DEALERSHIP AND THEY REQUIRE US TO REENACT (PUTTING EVERYONE IN DANGER) THE ISSUE AND UNTIL THEY EXPERIENCE IT, THEY WON'T FIX IT. LEAVING US WITH A CAR THAT DOESN'T STOP THAT WILL SOONER OR LATER CAUSE AN ACCIDENT.

WHEN BRAKING AT LOW SPEEDS, ESPECIALLY IN REVERSE, BRAKES FAIL. I HAVE TO PUSH THE PEDAL ALL THE WAY TO THE FLOOR AND THEY STILL DO NOT OPERATE CORRECTLY. THIS IS A CONSISTENT, MULTI-INCIDENT, PROBLEM SINCE PURCHASE. MANIFESTS ESPECIALLY WHEN BACKING INTO A PARKING SPOT.

MY TRUCK BRAKES DON'T WORK WHEN I AM GOING SLOWLY. I HAVE TO PUSH IN THE BRAKE PEDAL VERY HARD AND IT FEELS LIKE I'M STEPPING ON A ROCK. THE BRAKES DON'T WORK WHEN I AM MOVING SLOWLY(DRIVE THROUGH, PULLING INTO PARKING SPACE, PULLING INTO GARAGE, COMING TO A STOP AT AN INTERSECTION WHEN GOING SLOW). IT IS VERY SCARY. I HAVE NOT HIT ANYTHING YET, BUT I FEEL I WILL.

BRAKES FAILED COMPLETELY AT LOW TO MODERATE SPEEDS BOTH GOING FORWARD AND IN REVERSE. BRAKE PEDAL WENT FLAT TO THE FLOOR AND THE VEHICLE FAILED TO STOP. INITIALLY OCCURRED NOVEMBER 7, 2018 AND HAS PERIODICALLY RECURRED SINCE THEN. AS OF MARCH AND APRIL 2019 IT HAS BEGUN TO RECUR MORE FREQUENTLY. AFTER THE INITIAL OCCURRENCE I TOOK THE VEHICLE IMMEDIATELY TO THE DEALER. THEY COULD NOT REPLICATE THE PROBLEM AND TOOK NO CORRECTIVE ACTION. THEY DID RECOMMEND REPLACING THE FRONT BRAKE PADS AND MACHINING THE ROTORS, WHICH I HAD THEM DO. MILEAGE WAS 44,522 AT THAT TIME. IT IS BACK WITH THE DEALER TODAY AND THE FOCUS SEEMS TO BE THE BRAKE VACUUM PUMP. OF COURSE, THE VEHICLE IS NOW OUT OF WARRANTY SO I'M WAITING TO SEE IF THEY WILL PERFORM THE REPAIRS AT GMC'S EXPENSE OR NOT. IF NOT, I WILL LIKELY BEGIN CONTACTING OTHER OWNERS TO CREATE A GROUP LARGE ENOUGH TO INITIATE A CLASS ACTION LAWSUIT.

WITH 48,000 MILES, THE BRAKES ARE VERY SOFT AND INEFFECTIVE AT LOW SPEEDS. BOTH IN FORWARD AND REVERSE. IN READING ON LINE POST, THIS APPEARS TO BE A VERY COMMON PROBLEM IN 2014-2016 PICKUPS. IT APPEARS THE VACCUUM PUMP IS OUT AND WILL NEED REPLACED. THIS SHOULD BE A SAFETY RECALL AS I COULDNT STOP VERY WELL THE FIRST TIME IT HAPPENED.

WHEN DRIVING IN SLOW MOVING TRAFFIC TRANS MISSION FEELS VERY JERKY AND SHIFTS HARD. ALSO WHEN GOING FROM PARK TO REVERSE TRANSMISSION WILL CLUNK VERY HARD CAUSING THE TRUCK TO MOVE. TRUCK ALSO SEEMS TO HESITATE WHEN TRYING TO SHIFT IN LOWER GEARS WHILE ACCELERATING. THIS HAS BEEN AN ONGOING ISSUE SINCE PURCHASING THE TRUCK BRAND NEW FROM THE DEALERSHIP. PRIOR ATTEMPTS FOR SERVICE HAVE BEEN EXPLAINED BY THEIR TECHNICIANS AS BEING AN ADAPTIVE TRANSMISSION NEEDING TO LEARN

TRANSMISSION SHIFTS HARD GOING FROM 1ST TO 2ND GEAR WITH NO FIX FROM GM. COMPLAINED TO DEALER THEY SAID IT'S NORMAL AND THERE'S NO FIX FOR THE ISSUE. ISSUE ALSO PERSIST WHEN GOING FROM DRIVE TO REVERSE, A HARD SHIFT THAT I'VE NEVER EXPERIENCED BEFORE IN SEVERAL PREVIOUS GM PRODUCTS I OWNED OR CURRENTLY OWN. HAPPENS EVERY TIME I DRIVE THE VEHICLE

FRONT END UPPER CONTROL ARMS AND STRUTS ARE BROKEN CAUSING A GRINDING POPPING SOUND. MY VEHICLE HAS NEVER BEEN OFF ROADING, ALL HIGHWAY MILES. NHTSA SHOWS A RECALL ARTICLE ON THIS PARTICULAR MECHANICAL ISSUE (SEE ATTACHMENT) AS A RECALL FOR 2016 MODELS. MY VEHICLE HAS NOT REACHED THE THREE YEAR WARRANTY, BUT IS OVER THE 36,000 MILE WARRANTY. SINCE IT HAS BEEN A RECALL ISSUE, I AM REQUESTING A RECALL THAT GM SHOULD TAKE CARE OF. HOWEVER, GM REFUSES TO HANDLE ALL COST BECAUSE IT IS OUT OF 36,000 MILE WARRANTY.

BRAKES WERE VERY HARD TO APPLY AT SLOW SPEED. ALMOST CAUSED COLLISION WITH VEHICLE.

BRAKE PEDAL GETS VERY HARD CAN HARDLY STOP RIG DOES IT MORE WHEN GOING SLOW THEN AT HIGHWAY SPEED GOT TO BE VERY CAREFUL CAUSE YOU HAVE TO PRESS VERY HARD TO GET IT TO STOP

VEHICLE WOULD NOT BRAKE EFFECTIVELY UNDER NORMAL DRIVING CONDITIONS. SERVICED AT DEALER AND VACUUM PUMP WAS FOUND TO BE DEFECTIVE.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING LOW SPEEDS, THE BRAKE PEDAL FELT HARD AND FAILED TO DEPRESS. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO SUTTLE MOTORS (12525 JEFFERSON AVE, NEWPORT NEWS, VA 23602, (757) 886-1700) WHERE IT WAS DIAGNOSED THAT THE BRAKE VACUUM PUMP NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS CONTACTED AND DID NOT ASSIST. THE FAILURE MILEAGE WAS 39,578.

BRAKE PEDAL BECOMES EXTREMELY HARD TO DEPRESS. THE VEHICLE FAILS TO SLOW DOWN AT A REASONABLE RATE EVEN WHEN VERY SIGNIFICANT (FOOT) PRESSURE IS APPLIED. THIS OCCURRED MANY TIMES; THREE OCCURRENCES WHEN BACKING UP AND TWO OCCURRENCES WHEN DRIVING FORWARDS. ALL OF THESE EVENT OCCURRED AT VERY SLOW SPEED, BASICALLY WHEN MOVING THE VEHICLE INTO A PARKING SPOT. ALL EVENTS WERE PRECEDED BY SLOW DRIVING (< 4 MPH) FOR ABOUT ONE MINUTE. THE LOSS OF STOPPING POWER OCCURRED SUDDENLY; EVEN A FEW SECONDS BEFORE THERE APPEARED TO BE NO ISSUE. INITIALLY IT WAS IGNORED AS AN INDIVIDUAL OCCURRENCE, YET THE ADDITIONAL OCCURRENCES INDICATE AN ISSUE.

WHILE TRANSITING ON A MAJOR HIGHWAY IN NORTH FLORIDA THE TRAFFIC CAME TO A SUDDEN STOP AND UNFORTUNATELY WHEN I PRESSED THE BRAKE PEDAL NOTHING HAPPENED, I HAD TO PUSH THE PEDDLE WITH EXTREME POWER AND IT STILL WAS NOT ENOUGH. TO AVOID THE SLOWER VEHICLES I HAD TO PULL THE TRUCK ONTO THE GRASSY MEDIAN TO AVOID A POSSIBLE DEADLY COLLISION. I WAS ABLE TO RECOVER CONTROL OF THE TRUCK THANKFULLY. MYSTERIOUSLY THE BRAKES WORKED AGAIN WHEN I CAME BACK ONTO THE HIGHWAY. I TOOK THE TRUCK TO A NEARBY GMC SERVICE DEALER AND AFTER THE TRUCK WAS TESTED THEY INFORMED ME THAT THEY FOUND A FAULTY BRAKE VACUUM PUMP. IN DISCUSSION WITH THE DEALER THEY ALSO INFORMED ME THAT THIS IS BECOMING A "SOMEWHAT COMMON" ISSUE. WITHOUT WARNING OR ANY INDICATOR THE BRAKE SYSTEM FAILED, THIS IS COMPLETELY UNACCEPTABLE. LIVES COULD HAVE EASILY BEEN LOST DUE TO A MALFUNCTION PART. VEHICLE ONLY HAD 27K MILES ON IT.

BRAKE PEDAL BECOMES EXTREMELY HARD TO DEPRESS. THE VEHICLE FAILS TO SLOW DOWN AT A REASONABLE RATE EVEN WHEN VERY SIGNIFICANT (FOOT) PRESSURE IS APPLIED. THIS OCCURRED NOW FOUR TIMES; THREE OCCURRENCES WHEN BACKING UP AND ONE OCCURRENCE WHEN DRIVING FORWARDS. ALL OF THESE EVENT OCCURRED AT VERY SLOW SPEED, BASICALLY WHEN MOVING THE VEHICLE INTO A PARKING SPOT. ALL EVENTS WERE PRECEDED BY SLOW DRIVING (< 3 MPH) FOR ABOUT ONE MINUTE. THE LOSS OF STOPPING POWER OCCURRED SUDDENLY; EVEN A FEW SECONDS BEFORE THERE APPEARED TO BE NO ISSUE. THE ISSUE REMAINED UNTIL I PUT THE CAR IN PARK AND TURNED OF THE ENGINE. THE ISSUE WAS NO LONGER THERE WHEN I RESTARTED THE ENGINE. THE INSTANCES OF THE ISSUE OCCURRED OVER THE LAST TWO MONTHS. INITIALLY IT WAS IGNORED AS AN INDIVIDUAL OCCURRENCE, YET THE THREE ADDITIONAL OCCURRENCES INDICATE AN ISSUE. A SIMILARITY OF THE CONDITIONS LEADING UP TO THE ISSUE IS THAT I DROVE VERY SLOWLY ON A FLAT (LEVEL) SURFACE. THE DURATION OF THIS DRIVE WAS MAYBE A MINUTE OR SO. (THE BEST WAY TO DESCRIBE THIS IS HOW ONE DRIVES WHEN LOOKING FOR A PARKING SPOT IN A BUSY PARKING LOT WITH LOTS OF PEDESTRIAN TRAFFIC).

REAR WINDOW SHATTERING. APPARENTLY FROM WHAT I HAVE READ, IT HAS SOMETHING TO DO WITH REAR DEFROSTER SHORTING OUT AND OVER HEATING WINDOW.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. THE CONTACT STATED THAT THE BRAKE PEDAL BECAME EXTREMELY DIFFICULT TO DEPRESS. THE CONTACT HAD TO AGGRESSIVELY MANEUVER THE VEHICLE TO AVOID A CRASH. OURISMAN CHEVROLET OF ROCKVILLE (807 ROCKVILLE PIKE, ROCKVILLE, MD 20852, (301) 637-6496) HAD NOT BEEN ABLE TO DIAGNOSE THE FAILURE. FITZGERALD BUICK GMC ROCKVILLE (5501 NICHOLSON LN, ROCKVILLE, MD 20852, (301) 770-3300) DIAGNOSED THAT THE BRAKE BOOSTER VACUUM WAS FAULTY AND REPLACED THE PART UNDER WARRANTY. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE FAILURE MILEAGE WAS NOT AVAILABLE.

POWER STEERING STOPPED WORKING FOR 2 SECONDS WHILE I WAS DRIVING. I SUDDENLY FELT STEERING BEING HEAVE AND LOSING CONTROL AND BRAKES WAS NOT WORKING AT THE SAME TIME. LUCKILY I WAS GOING SLOWLY AROUND 20 MPH IN NEIGHBORHOOD. IT COULD HAVE BEEN WORST IF I WAS IN FREE WAY.

WHEN I AM GOING AT A SLOW RATE OF SPEED AT FAST FOOD DRIVE-THROUGH OR BACKING DOWN MY DRIVEWAY IN REVERSE I GO TO PRESS ON MY PANEL AND NEXT THING YOU KNOW IT IS IS HARD AS A BRICK AND THE VEHICLE KEEPS GOING I HOLD MOST DIDN'T STOP GOING DOWN MY DRIVEWAY AND HIT ONE OF MY CHILDREN I'VE TOOK IT TO THE DEALERSHIP TWICE THEY SAY YOU CAN'T TAP YOUR BRAKES YOU HAVE TO LET THE VACUUM BUILD BACK UP THAT IS NO EXCUSE FOR THE VEHICLE NOT STOPPING!!!! THIS HAPPENS DAILY AT SOME POINT SOMETHING HAS TO BE DONE SOMEONE IS GOING TO GET HURT !!!!!!!

BRAKES BECOME STIFF AT SLOW SPEEDS NOW ALLOWING THE TRUCK TO PROPERLY STOP

WHEN ATTEMPTING TO STOP AT LOW SPEEDS, EXPERIENCING LITTLE TO NO BRAKE PRESSURE IN DRIVE AND REVERSE. THIS IS THE THIRD OCCURRANCE SINCE NOV 2018. SYMPTOMS INCLUDE STIFF BRAKE PEDAL AND AUDIBLE CLICK UPON RESUMING MOTION AND THUMP FELT IN BRAKE PEDAL FOLLOWED BY SIGNIFICANTLY REDUCED BRAKING ABILITY. NARROWLY AVOIDED THREE COLLISIONS ON COMMUTE TO WORK THIS MORNING IN NORMAL TRAFFIC CONDITIONS.

AT LOW SPEEDS THE VACUUM PUMP GETS WEAK AND DOES NOT PROVIDE THE NEEDED VACUUM TO THE BRAKE BOOSTER. RESULTING IN LOSS OF POWER BRAKES. WHILE PARKING I BACKED UP AND THEN PULLED FORWARD TO STRAIGHTEN UP. AS I CHANGED DIRECTION A PEDESTRIAN WALKED OUT IN FRONT OF ME AND NEARLY HIT THEM. I HAD TO STAND ON THE PEDAL WITH BOTH FEET. IF MY WIFE WOULD HAVE BEEN DRIVING THE TRUCK SHE WOULD HAVE RAN THE PEDESTRIAN OVER. THE DEALER CAN NOT REPLICATE THE PROBLEM AND THEY ARE NOT GOING TO REPLACE THE BOOSTER UNDER WARRANTY. ALTHOUGH GM DOES HAVE A TECHNICAL SERVICE BULLETIN IN PLACE ABOUT THIS EXACT ISSUE. TSB # PIT5361C. THIS IS A MAJOR SAFETY CONCERN!!!! AND GM DOES NOT CARE!

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. THE CONTACT STATED THAT THE VEHICLE FAILED TO RESPOND WHEN THE BRAKE PEDAL WAS DEPRESSED. THE CONTACT HAD TO APPLY FORCE TO THE BRAKE PEDAL EACH TIME THE FAILURE OCCURRED. OURISMAN CHEVROLET BUICK GMC OF ALEXANDRIA (1800 OLD RICHMOND HWY, ALEXANDRIA, VA 22303, (571) 366-8047) WAS NOTIFIED SEVERAL TIMES FOR MONTHS AND STATED THAT FURTHER DIAGNOSTIC TESTING WAS NEEDED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED THE SAME SYMPTOMS AS LISTED IN NHTSA PRELIMINARY EVALUATION NUMBER: PE18012 (SERVICE BRAKES, HYDRAULIC, SERVICE BRAKES), BUT WAS EXCLUDED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE.

LOST POWER BRAKES WHEN DEPRESSING THEM AS I WAS BACKING INTO A PARKING SPOT. I HAD TO PRESS REPEATEDLY TO GET PRESSURE BACK IN THE BRAKES. LUCKILY STOPPING IN TIME. IT HAPPENED AGAIN LATER THIS EVENING WHEN I WAS ROLLING TO A STOP AT A LIGHT. THE BRAKES AGAIN LOST POWER AND I HAD TO PRESS THEM REPEATEDLY STOP THE TRUCK BEFORE HITTING THE CAR IN FRONT OF ME.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING VARIOUS SPEEDS, THE BRAKES SUDDENLY MALFUNCTIONED AND THE BRAKE PEDAL BECAME VERY DIFFICULT TO DEPRESS. THE VEHICLE WAS TAKEN TO COATHELLA VALLEY GMC (78960 GARNER RD, INDIO, CA) WHERE IT WAS DIAGNOSED THAT THE BRAKE VACUUM PUMP WAS FAULTY. THE VACUUM PUMP WAS REPLACED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOT NOTIFIED. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 143,000.

WHEN TRAVELING AT SLOWER SPEEDS IN STOP AND GO TRAFFIC ON THE HIGHWAY THE BRAKE PEDDLE BECOMES VERY HARD AND I AM UNABLE TO STOP THE TRUCK. NO OTHER VECHILES WERE HIT, BUT IT WAS A VERY UNCOMFORTABLE SITUATION. THIS HAS ALSO HAPPEN SERVEL TIMES IN FORWARD AND REVERSE WITHIN PUBLIC PARKING LOTS. I HAVE BEEN A ABLE TO DETERMINE THE TRUCK LOSES POWER BRAKES WHEN THE BRAKE PEDDLE IS APPLIED 4-5 TIMES WHILE TRAVELING SLOW.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING AT LOW SPEEDS, THE VEHICLE WOULD NOT STOP IN A TIMELY MANNER WHEN THE BRAKE PEDAL WAS DEPRESSED. THE CONTACT HAD TO DEPRESS THE BRAKE PEDAL SEVERAL TIMES TO STOP THE VEHICLE. THE VEHICLE WAS TAKEN TO RON ANDERSON CHEVROLET BUICK GMC (464054 E STATE ROAD, YULEE, FL, (904) 572-4132) WHERE IT WAS DIAGNOSED THAT THE BRAKE VACUUM PUMP FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 41,000.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WITHIN LESS THAN A WEEK OF OWNING THE VEHICLE, THE BRAKE PEDAL FELT HARD AND WAS DIFFICULT TO DEPRESS. CORWIN CHRYSLER DODGE JEEP RAM FIAT (1025 W SUNSHINE ST, SPRINGFIELD, MO 65807, (417) 862-9272) WAS INFORMED, BUT THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE VEHICLE COULD NOT BE DRIVEN SAFELY DUE TO THE FAILURE. THE DEALER STATED THAT THE VEHICLE MAY BE SERVICED PER A WARRANTY, BUT IT WOULD NOT BE IN EFFECT FOR ANOTHER SIXTY DAYS. THE DEALER STATED THAT THE VEHICLE MAY BE SERVICED FOR TSB: PIT-5361B (ADDITIONAL BRAKE PEDAL EFFORT). THE MANUFACTURER WAS NOT NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 71,000.

2016 GMC SIERRA- BOUGHT USED HARD SHIFTING NOTED IMMEDIATELY AND SHUTTERING ON INCLINES, TOOK TO DEALERSHIP HAD PART REPLACED- FIXED SHUTTERING BUT NOT HARD SHIFTS- NOW IT NOT ONLY SHIFTS HARD BUT WHILE I WAS TRYING TO STOP AT A DRIVE THROUGH THE BRAKES FAILED- LUNGES FORWARD ALMOST HITTING THE CAR IN FRONT OF US- NEXT DAY I PULLED INTO A PARKING SPOT SAME THING HAPPENED- BRAKES WOULD NOT COMPRESS- STOOD ON THE BRAKE BEFORE IT FINALLY STOPPED- BACKED UP A BIT TO STRAIGHTEN UP AND THE [XXX] THING DID IT AGAIN IN REVERSE. I'M TRAVELING BACK HOME TO ARKANSAS FROM FLORIDA IN A FEW DAYS WITH MY CHILDREN AND I'M SCARED TO DEATH TO DRIVE THIS THING. I CAN'T GET IT LOOKED AT BEFORE WE LEAVE BECAUSE OF THE WEEKEND/ CHRISTMAS BREAK.SERIOUSLY UNSAFE VEHICLE! THERE SHOULD BE RECALLS ON THESE VEHICLES! I'VE READ SO MANY SIMILAR STORIES, WHY HAS THIS NOT BEEN ADDRESSED YET? GMC SHOULD BE ASHAMED. 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).

I HAVE EXPERIENCED LOSS OF POWER BRAKE BOOST ON NUMEROUS OCCASIONS, SEVERAL TIMES WHILE BACKING MY BOAT TRAILER DOWN THE BOAT RAMP, AND SEVERAL OCCASIONS BACKING UP AT SLOW SPEEDS AND GOING FORWARD AT SLOW SPEEDS (USUALLY LESS THAN 5 MPH). THE BRAKE PEDAL BECOMES VERY HARD TO DEPRESS, AND TRUCK FEELS LIKE IT'S NOT GOING TO STOP UNLESS I APPLY EXTREME PRESSURE. IT HAS BEEN INTERMITTENT. I ASKED MY LOCAL GMC DEALER ABOUT THE ISSUE THIS PAST FALL, AND WAS TOLD THEY COULDN'T DO ANYTHING UNTIL IT FAILED AND COULD BE REPLICATED. I DIDN'T EXPERIENCE IT AGAIN FOR SEVERAL MONTHS, BUT THIS WEEK IT HAS OCCURRED AT LEAST THREE TIMES. I CALLED DEALER TO MAKE AN APPOINTMENT, WHICH THEY DID, BUT THEY AGAIN TOLD ME THAT UNLESS THEY CAN REPLICATE IT, THEY WON'T BE ABLE TO FIX IT. I HAVE RESEARCHED THIS SITE AND HAVE FOUND A NUMBER OF INSTANCES WITH BOTH GMC SIERRA'S AND CHEVROLET SILVERADO'S EXPERIENCING THE EXACT SAME PROBLEM.

PULLING INTO MY GARAGE AT VERY SLOW SPEED, I DEPRESSED THE BRAKE PEDAL AND NOTHING HAPPENED. I HAD TO STAND ON THE BRAKE PEDAL TO PREVENT THE TRUCK FROM GOING THROUGH THE WALL AND INTO THE DINING ROOM. THOUGHT MAYBE THERE WAS SOME AIR IN THE BRAKE FLUID. LOOKED AT THE RESERVOIR AND NOTHING APPEARED OUT OF NORMAL. A COUPLE OF WEEKS LATER, TODAY 12/18/18, WHILE BACKING OUT OF A PARKING SPOT AT AN AUTOZONE, SOMEONE WALKED BEHIND THE TRUCK. AS I PRESSED THE BRAKE PEDAL TO STOP AND ALLOW THEM TO PASS, NOTHING HAPPENED. THE TRUCK KEPT GOING. I HAD TO STAND ON THE PEDAL TO PREVENT MY TRUCK FROM BUMPING INTO THE PEDESTRIAN. BOTH INCIDENTS HAD THE VEHICLE MOVING AT LESS THAN 5 MPH AND IDLE ENGINE POWER.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHEN THE VEHICLE WAS STARTED, THE AIR BAG WARNING INDICATOR ILLUMINATED. WHILE DRIVING APPROXIMATELY 45 MPH, THE DRIVER AND PASSENGER SIDE CURTAIN AIR BAGS DEPLOYED. THE CONTACT STOPPED THE VEHICLE IN THE MIDDLE OF THE HIGHWAY UNTIL THE POLICE ARRIVED. THE VEHICLE WAS TOWED TO THE CONTACT'S RESIDENCE. THE VEHICLE WAS TAKEN TO FINNEGAN CHEVROLET (26529 SOUTHWEST FWY, ROSENBERG, TX 77471) WHERE IT WAS DIAGNOSED THAT THE HEADLINER AND SENSORS NEEDED REPLACEMENT. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 47,000.

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. THE CONTACT STATED THAT WHEN THE POWER MIRROR BUTTON WAS ACCIDENTALLY TOUCHED, THE MIRRORS FOLDED INWARD AND WOULD NOT FOLD BACK OUT. THE VEHICLE WAS TAKEN TO STERLING MCCALL BUICK GMC (713-776-4600, LOCATED AT 10422 SOUTHWEST FWY, BLDG D, HOUSTON, TX 77074) TO BE DIAGNOSED, BUT THE FAILURE COULD NOT BE DUPLICATED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THERE WAS NO RECALL. THE FAILURE WAS NOT REMEDIED. THE FAILURE MILEAGE WAS APPROXIMATELY 28,000.

SINCE BUYING THE TRUCK NEW IN 2016 IT HAD A VIBRATION , WHICH GOT WORSE AS YOU INCREASED SPEED, AT HIGHWAY SPEED, 65-75 MPH THE VIBRATION IS SO BAD IT WAS MAKING ME NAUSEOUS. I HAVE TAKEN IT TO THE DEALER SEVERAL TIMES, FIRST BALANCED THE TIRES AND SAID EVERYTHING WAS NORMAL, TRUCK STILL VIBRATING. SEVERAL MORE TRIPS TO THE DEALER WITH THE SAME RESULT.

FAILED SEAL ON 3RD BRAKE LIGHT RESULTING IN COMPLETE REPLACEMENT OF BRAKE LIGHT REQUIRED DUE TO WATER INFILTRATION. HAPPENED IN CAR WASH AFTER OWNING 2YRS 8 MONTHS.

BRAKE PEDAL BECOMES HARD TO PUSH MAKING STOPPING A PROBLEM. HUGE SAFETY ISSUE. WHILE IN MOTION AT LOW RPM BRAKE PEDAL BECOMES HARD LIMITING THE STOPPING OF THE TRUCK

MY 2016 GMC SIERRA HAS 44,000 MILES ON IT. IN THE LAST 2 WEEKS I HAVE HAD 3 OCCASIONS WHEN TRAVELING AT VERY LOW SPEEDS THE BRAKE PEDAL BECOMES STIFF AND REQUIRES BOTH FEET TO DEPRESS ENOUGH TO GET THE VEHICLE TO STOP. EVEN WHEN COMPLETELY COMPRESSED WITH MY FULL FORCE THE VEHICLE CONTINUED TO ROLL SLOWLY. ONE TIME WAS IN A PARKING LOT AND THE OTHER 2 TIMES WERE AT DRIVE-THRU FAST FOOD SPOTS. BRAKE FUNCTION SEEMS COMPLETELY FINE AT NORMAL OPERATING SPEEDS. A SEARCH OF THE INTERNET LED ME TO FIND SEVERAL FORUMS WITH PEOPLE DESCRIBING THE EXACT SAME SITUATIONS. AT LOW SPEEDS THE BRAKE PEDAL BECOMING EXTREMELY STIFF AND CANNOT BE DEPRESSED MORE THAN 1". I WAS LUCKY TO BE ABLE TO STOP BY PUTTING MY TRUCK INTO NEUTRAL. IF I HAD ROLLED OUT IN CROSS TRAFFIC SOMEONE COULD HAVE BEEN KILLED. THERE ARE WAY TOO MANY STORIES EXACTLY LIKE MINE ALL OVER THE INTERNET FOR THERE NOT TO BE A SIGNIFICANT PROBLEM WITH THE VACUUM PUMP AND OR BRAKE BOOSTER OR SOME OTHER BRAKE SYSTEM COMPONENT ON 2014-2018 GMC PICKUPS AND LARGE SUVS.

VACUUM PUMP FAILED AND REPLACED AT MY OWN EXPENSE. BRAKES WOULD NOT DEPRESS, WERE VERY FIRM AND TRUCK CONTINUED TO ROLL EVEN WITH EXTRA FIRM PRESSURE ON BRAKE PEDDLE.

SEVERAL TIMES I'VE EXPERIENCED WEAK BRAKING A DIFFERENT SPEEDS OR WHILE SHIFTING FROM PARKING. I ALSO EXPERIENCE THE BRAKES NOT FULLY DEPRESSING AFTER I STEP ON THE BRAKES. I TOOK MY VEHICLE FOR A BRAKE INSPECTION THINKING I MAY NEED NEW BRAKES AND WAS TOLD BY THE INSPECTOR THAT THE PADS ARE NOT THE ISSUE, HE TOLD ME HE HAS NEVER SEEN AN ISSUE SIMILAR TO WHAT IS GOING ON WITH MY TRUCK AND INSTRUCTED ME TO TAKE IT TO THE DEALERSHIP. WHEN I CONTACTED THE DEALERSHIP THE SERVICE ADVISOR TOLD ME THAT IT SOUNDS LIKE I JUST NEED TO REPLACE THE BRAKE PADS AND ROTORS AND TOLD ME THAT HE DOESN'T BELIEVE THERE'S AN UNDERLYING ISSUE BASED ON WHAT I WAS TOLD AT THE OTHER SERVICE CENTER. ANY ISSUES WITH BRAKING COMPONENTS SHOULD BE ADDRESSED IMMEDIATELY BY THE MANUFACTURER BEFORE PEOPLE GET HURT OR SOMEONE IS KILLED.

HAD TO REPLACE VACUUME PUMP AFTER INTERMITTENT BRAKE FAILURE AT SLOW SPEEDS WITH ONLY 38,000 MILES ON THE TRUCK. BRAKE FAILURE WOULD OCCUR WITHOUT WARNING. DEALERSHIP DIAGNOSED THE ISSUE AFTER TESTING HE VACUUME PUMP, WHICH WAS READING 6 PSI. WAS TOLD THERE HAVE BEEN NO RECALLS FOR THIS ISSUE.

BRAKE PEDAL ROCK HARD AND WILL NOT PRESS DOWN

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING 65 MPH IN STOP AND GO TRAFFIC, THE CONTACT DETECTED A SHUTTER AND HEARD AN ABNORMAL NOISE WHEN SHIFTING GEARS. THE VEHICLE WAS TAKEN TO MARTY'S BUICK GMC (5 KINGSTON COLLECTION WAY, KINGSTON, MA 02364, (781) 948-9098) WHERE THE TRANSMISSION WAS REPROGRAMMED AND FLUSHED. THE VEHICLE WAS THEN TAKEN TO BEST CHEVROLET (128 DERBY ST, HINGHAM, MA 02043, 866-208-7873) WHERE THE CONTACT WAS INFORMED THAT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 96,794.

TRANSMISSION SHIFTS ABRUPTLY AND TORQUE CONVERTER CAUSES SHUDDER AT HIGHWAY SPEEDS. TRUCK HAS BEEN SERVICED TWICE FOR THE SAME ISSUE BY DEALER AND DEALER RECENTLY TOLD ME PROBLEM IS UNRESOLVABLE.

I WAS DRIVING DOWN ROAD AND BACK DRIVERS SIDE WINDOW EXPLODED. MY GRANDDAUGHTERS WERE SITTING IN THEIR CAR SEATS AND WERE SHOWERED WITH GLASS. THE WINDOW LITERALLY BLEW UP. I CALLED DEALER, HE SAID HE'S NEVER HEARD OF SUCH A PROBLEM. I FOUND SEVERAL COMPLAINTS ON MY GMC FORUM PAGE AND WXYZ 7 IN DETROIT, MI. HAS RUN STORIES ON THIS PROBLEM.

SUSPENSION ISSUE, RANDOM VIBRATION AT SPEEDS OVER 65 MPH THAT COME AND GO. SAME SITUATION AS WHAT OCCURS IN THIS YOUTUBE VIDEO. HTTPS://WWW.YOUTUBE.COM/WATCH?V=R7R85U1RAMA

CONSTANT VIBRATION AND OR SHAKE AT SPEEDS BETWEEN 60-70 MPH. THIS ISSUE IS COMMONLY REFERRED TO AS THE "CHEVY SHAKE" THIS ISSUE HAS BEEN EXISTING SINCE FIRST PURCHASING THIS VEHICLE. I ADDRESSED THE CONCERN WITH THE DEALERSHIP DURING MULTIPLE VISITS FOR SERVICE. AS THIS WAS MY FIRST FULL SIZE TRUCK, I WASN'T SURE WHAT TO EXPECT REGARDING HOW THE VEHICLE WOULD RIDE AT HIGHWAY SPEEDS. I WAS TOLD BY THE SERVICE DEPARTMENT THAT THE VEHICLE WAS IN TOLERANCE IN REGARDS TO HOW IT RODE AND THE CONSTANT VIBRATION. SO I EXCEPTED THIS AS BEING THE NORM AND WENT AHEAD TO ADD SOME MODIFICATIONS TO MY TRUCK. SINCE THE INITIAL COMPLAINT THE SERVICE DEPARTMENT HAS SINCE TURNED OVER MOST OF THEIR STAFF AND ADDED PEOPLE WILLING TO ADDRESS AND ACKNOWLEDGE THAT MY VEHICLE INDEED HAS THIS VIBRATION/SHAKE ISSUE. DUE TO THE MODIFICATIONS MADE THEY WILL NOT ADDRESS OR ATTEMPT TO CORRECT THIS ISSUE. HAD I PRESSED THE ISSUE IN THE BEGINNING AND NOT ACCEPTED WHAT THESE SO CALLED PROFESSIONALS HAD TOLD ME TO BE ACCEPTABLE MAYBE I WOULDN'T BE IN THIS PREDICAMENT. MY VEHICLE HAS ALSO BEEN IN FOR NUMEROUS BUCKET SEAT ISSUES FROM SAGGING AND POOR SEAT SUPPORT. EVERYTHING DESCRIBED HERE IS FACTUAL AS I HAVE ALL THE SERVICE RECORDS AND HISTORY WITH THE SAME GMC DEALERSHIP AND SERVICE DEPARTMENT IN REGARDS TO THESE PROBLEMS. LONG STORY SHORT, THESE ISSUES HAVE MADE LONG DISTANCE TRIPS ALMOST UNBEARABLE BETWEEN THE CONSTANT SHAKING AND POOR SEAT SUPPORT.

ON MULTIPLE OCCASIONS, THE BRAKES APPEARED TO LOOSE ALL BRAKE BOOSTER FUNCTION, CAUSING INCREDIBLY WEAK BRAKING AT LOW SPEEDS. TWICE IT FAILED IN A PARKING LOT SITUATION, WHERE THE EFFECT WAS MINIMAL (JUST REQUIRED PUSHING THE PEDAL WITH MAXIMUM FORCE I COULD GENERATE) THE MOST RECENT WAS A PARALLEL PARKING SITUATION WHERE THE BRAKE FAILURE ALMOST CASED A LOW SPEED COLLISION. I MISSED THE CAR BEHIND ME BY MERE INCHES!! I ADDRESS THIS WITH THE GM DEALER TWICE AND BOTH TIMES I RECEIVED "COULD NOT DUPLICATE" IT WILL BE NOTED AGAIN. THIS NEEDS TO BE ADDRESSED VIA A RECALL AS IT IS A MAJOR SAFETY ISSUE, AND IS NOT SPECIFIC TO MY TRUCK (THIS HAS BEEN DOCUMENTED ON THE INTERNET, AND THERE IS A TSB FOR IT WHICH MINE SUPPOSEDLY WAS NOT PART OF) THE PROBLEM IS LOW SPEED, AT IDLE MANUVERS WHERE THE BRAKES ARE REPLIED REPEATEDLY (LIKE PARKING). I NEVER NOTICED A PROBLEM AT ANY SPEED ABOVE CRAWL

WHEN BACKING INTO A PARKING SPOT AT MY RESIDENCE. I PULLED FORWARD TO STRAIGHTEN OUT AND MY BREAK PEDAL GOT HARD AND WOULD NOT COME TO A COMPLETE STOP FOR A FEW FEET AFTER INITIATING STOPPING PROCEDURE. I ALMOST RAN INTO MULTIPLE VEHICLES. IT WAS AS IF I WAS SLIDING ON ICE. I TRIED IT A COUPLE MORE TIMES THINKING IT WAS A FLUKE AND IT PERSISTED TO CONTINUE WITH THE SAME BEHAVIOR. I EVEN WENT AS FAR AS TURNING MY TRUCK OFF AND STARTING IT AGAIN TO SEE IF IT WAS AN ELECTRICAL ISSUE CAUSING IT AND NOPE CONTINUED TO DO IT. THIS IS A HUGE ISSUE THAT NEEDS TO BE TAKEN CARE OF AS I HAVE READ MULTIPLE COMPLAINTS OVER THE SAME THING.

TRANSMISSION - WHEN DRIVING THE VEHICLE IT DOES A HARD SHIFT WHEN ACCELERATING AND DECELERATING. I HAVE TAKEN THE VEHICLE INTO THE DEALER TWICE. THEY ARE SAYING THAT IS A "STATE OF THE ART" COMPUTER THAT NEEDS TO BE RESET!!! I AM TAKING IT BACK IN FOR A 3RD TIME. THE CARE IS 2 YEARS OLD WITH 31K MILES.

AC CONDENDOR. I AM HAVING TO REPLACE THE AC CONDENDOR ON A 2 YEAR OLD TRUCK AT A COST OF OVER $1000. TRUCK IS JUST OVER DEALER CERTIFIED WARRANTY BY 6,000 MILES WITH 54000 MILES. AFTER BEING TOLD BY DEALER THAT THIS WAS A KNOWN ISSUE AND RESEARCHING ONLINE, IT APPEARS THAT IS A COSTLY REPAIR THAT IS AFFECT LARGE NUMBERS OF OWNERS. GM HAS OFFERED EXTENDED WARRANTY ON SIMILAR VEHICLE THAT HAVE THIS ENGINE AND CONDENDOR SETUP BUT NOT INCLUDED THE SIERRA. APPEARS TO BE A KNOWN MANUFACTURER DEFECT THAT THEY ARE NOT COVERING.