2015 GMC Sierra 1500 complaints

VEHICLE LOSES BRAKE PRESSURE WHILE MOVING AT SLOWER SPEEDS. ONCE COMING TO A STOP, THEN DOING SLOW SPEED STOPS AND STARTS THE PEDAL WILL BECOME HARD AND REQUIRES GREAT EFFORT TO BRING THE VEHICLE TO A COMPLETE STOP. ISSUE STARTED AT ABOUT 38,000 MILES JUST AFTER FACTORY 36,000 MILE WARRANTY. ISSUE PRESENTS ITSELF MORE OFTEN IN REVERSE WHILE BACKING IN, ESPECIALLY IF GRADE IS SLOPED. HAVE HAD MULTIPLE CLOSE CALLS IN PARKING LOT SETTINGS WHILE TRYING TO BACK IN TO A PARKING SPOT OR INCH FORWARD. A FRIEND HAD THIS SAME ISSUE WITH HIS 2016 CHEVROLET SILVERADO, WHICH ENDED UP BEING A $1,800 FIX THROUGH THE DEALERSHIP. HE WAS TOLD THAT IT WAS A VACUUM ISSUE WITH THE BRAKE PUMP AND THAT A RECALL WOULD PROBABLY BE ISSUED. I HAVE BEEN HOLDING OUT ON SERVICE IN HOPES OF THIS RECALL BEING ISSUED.

COMPLETE BRAKE FAILURE WITH NO WARNINGS. DEALER DIAGNOSTIC REPORTS FROZEN VACUUM PUMP. THE CONDITION WAS ENCOUNTERED IN MOTION ON A COUNTY RD.

DURING LOW SPEED BRAKING MANEUVERS WHILE PARKING IN MY DRIVEWAY BRAKE PEDAL PRESSURE REQUIRED TO STOP BECAME VERY HARD. IT TOOK BOTH FEET ON THE PEDAL TO ACTUALLY STOP THE TRUCK. THIS WOULD HAPPEN DAILY WHILE BACKING IN TO MY DRIVEWAY. ALSO DURING NORMAL CITY STOP AND GO DRIVING IT WOULD ALSO REQUIRE GREAT EFFORT TO STOP THE TRUCK AND THE PEDAL WOULD BE VERY HARD TO PRESS.

STOPPED TO TAKE A BREAK WHILE TRAVELING. AS WE WENT TO EXIT THE PARKING AREA AND STOP AT THE STOP SIGN, NO REAL BRAKING POWER. HAD TO PUT BOTH FEET ON THE PEDAL AND PRESS INTO IT TO COME TO A STOP. WE WERE TRAVELING AT ABOUT TWO MPH. NO WARNING THERE WAS A PROBLEM. ONE MINUTE WE HAD GOOD BRAKES, THE NEXT, NOT. LUCKILY THERE WAS NO TRAFFIC, AS WE WERE UNABLE TO STOP AT THE STOP SIGN AND FINALLY CAME TO A STOP IN THE RIGHT LANE IF THE ROAD. THE MECHANIC STATED THE REED IN THE VALVE OF THE PUMP CAME APART.

HARD BRAKE PEDAL - "NO BRAKES" FIRST OCCURRENCE IN PARING LOT 2016 TIMEFRAME . WAS BACKING INTO A SPOT THAT WAS SLIGHTLY DOWNHILL, NO BRAKES , VEHICLE HIT CURB AND STOPPED. PULLED FORWARD NO BRAKE, EVENTUALLY THEY CAME BACK . COMPLAINED TO GM HOTLINE - THEY RESPONDED WITH QUESTIONS AND I TOLD THEM I TOOK TRUCK TO DEALER, I BELIEVE DEALER REPLACED MASTER CYLINDER SECOND OCCURRENCE MAY 2017 DRIVING ON I-75 - 18 YEAR OLD DAUGHTER DRIVING ON WAY HOME FROM COLLEGE, TRAFFIC SLOWED AND SHE SAID "I HAVE NO BRAKES, PEDAL WONT MOVE". SHE MANEUVERED TO SIDE OF ROAD, VEHICLE TURNED OFF AND THEN BACK ON, BRAKES CAME BACK AND WORKED OK . MENTIONED DURING OIL CHANGE AT SERRA CHEVROLET, BUT SINCE BRAKES WERE WORKING THEY WOULD NOT INVESTIGATE THIRD EVENT - NOVEMBER 16-- AT TAIL END OF 8 HOUR DRIVE RETURNING FROM DEER CAMP. EXIT FREEWAY AND IN STOP AND GO TRAFFIC , ON A DOWNHILL PORTION OF ROAD, THE BRAKE WENT HARD . GOT VEHICLE STOPPED AND TURNED ENGINE OFF AND BACK ON, BRAKES RELEASED. CONTACTED DEALER ABOUT BRINGING TRUCK IN THIS WEEK. GOING TO ED RINKE DEALERSHIP TODAY NOV 24, I READ ARTICLE ABOUT THE A FAULTY BRAKE VACUUM PUMP. THIS NOW MAKES SENSE. PLEASE GET THIS ISSUE FIXED

IN STOP AND GO TRAFFIC ON HIGHWAY AT LOW SPEED EXPERIENCED BRAKE PEDAL STIFFENING AND DIFFICULTY STOPPING. REOCCURRED SEVERAL TIMES DURING SAME TRAFFIC PATTERN BUT ONLY AT THE LOW STOP AND GO SPEED. PROBLEM OCCURRED WITH NO WARNING. BRAKES WORKED AS NORMAL UNDER OTHER CIRCUMSTANCES. FORUM RESEARCH SUGGESTED THIS WAS A VACUUM PUMP AND OCCURRED TO OTHER MODELS OF SAME YEAR AND MILLAGE. VACUUM PUMP (INTERNAL) FAILURE WAS CONFIRMED ISSUE BY GM DEALER AND REPLACED. MILEAGE WHEN PROBLEM OCCURRED WAS APPROXIMATELY 47,200 MILES. VEHICLE IN GOOD CONDITION, NO WRECKS ,REGULAR MAINTENANCE, AND NOT USED FOR TOWING OR HEAVY HAULING.

THE STOCK FACTORY HEAD LAMPS/BULBS ARE VERY DIM AND DO NOT LIGHT UP THE SIDE OF THE ROAD OR VERY FAR DOWN THE ROAD AND THE LIGHTS HAVE A VERY SHARP CUT OFF LINE.

I FIRST NOTICED THE ISSUE ON THE MORNING OF SATURDAY, NOVEMBER 10TH AS I WAS BACKING INTO A PARKING SPOT. AS I WAS BACKING IN, I NOTICED ALL OF A SUDDEN THE BRAKE PEDAL WAS ON THE FLOOR AND I WAS ABOUT TO PLOW INTO A CURB AND THREW THE TRUCK IN PARK. I DIDN'T THINK ANYTHING OF IT. THE SECOND TIME IT HAPPENED WAS ONE DAY LATER AS MY FIANCE AND I HAD JUST COMPLETED A 200 MILE DRIVE HOME. I WAS PULLING INTO THE PARKING LOT AT OUR TOWNHOUSE COMPLEX AND AS I WAS PULLING FORWARD TO BACK INTO THE SPACE, I NOTICED I HAD NO BRAKING POWER WHATSOEVER. I HAD TO THROW THE TRUCK IN PARK TO KEEP IT FROM HITTING A NEIGHBORS VEHICLE. I OPENED THE HOOD WITH THE ENGINE RUNNING, AND NOTICED A TICKING NOISE I HADN'T HEARD BEFORE AND MY BRAKE PEDAL ONLY HAD ABOUT 1/4" OF TRAVEL LEFT. I COULD PULL THE PEDAL BACK TO WHERE IT IS SUPPOSED TO BE BUT IT WOULD JUST FALL BACK DOWN TO THE FLOOR. I WAS ABLE TO VERY SLOWLY AND CAREFULLY PARK THE TRUCK USING PARK AND THE PARKING BRAKE. WITH THE ENGINE STILL RUNNING AND THE VEHICLE IN PARK, I DEPRESSED WHAT WAS LEFT OF THE BRAKE PEDAL AND HELD IT TO THE FLOOR AND HEARD A MOANING NOISE COMING FROM THE AREA NEAR THE MASTER BRAKE CYLINDER AND COULD FEEL THE BRAKE PEDAL SHUDDERING UNDER MY FOOT. I FEEL UNSAFE DRIVING THIS VEHICLE AND I WAS GIVING NO WARNING OF THE BRAKE FAILURE. I AM HAVING THE VEHICLE TOWED TO SEWELL BUICK GMC IN DALLAS AND WILL UPDATE WHEN THEY FIND CAUSE. I WILL ALSO BE CALLING GM CUSTOMER SUPPORT AS I FEEL THIS IS A HUGE SAFETY HAZARD.

WHEN GOING UNDER 15MPH BRAKE PEDAL BECOMES HARD AND DOESN'T WORK. VEHICLE HAS 50K MILES. BRAKE BOOSTER DECLARED BAD BY MECHANIC. THIS ISSUE ALMOST CASUED ACCIDENT.

TRUCK LOOSES BRAKING ABILITY AT LOW SPEEDS SUCH AS TRAFFIC OR PARKING LOTS.

ISSUE WHEN BRAKING THAT CAUSES THE BRAKE PEDAL TO LOSE POWER AND CAUSES THE DRIVER TO DEPRESS THE PEDAL EXTREMELY HARD TO HAVE THE BRAKES ENGAGE. THE CAUSE APPEARS TO BE A FAULTY VACUUM PUMP THAT REQUIRES REPLACEMENT. THIS COULD BE POTENTIALLY A LARGE SAFETY ISSUE IF THE PUMP FAILS AND THE VEHICLE IS UNABLE TO BE STOPPED IN TIME TO AVOID A POSSIBLE COLLISION. THIS ISSUE HAS OCCURRED BOTH WHILE IN TRAFFIC ON A CITY STREET AND WHILE ATTEMPTING TO PARK THE VEHICLE.

THE VACUUM PUMP CONTROLLING THE BRAKES HAS FAILED. WHEN THE BRAKE IS PRESSED IN STOP/GO TRAFFIC, IT WILL FIRST STOP THE VEHICLE, BUT IF THE BRAKE IS RELEASED THEN PRESSED AGAIN, THE BRAKES WILL NOT WORK AND THE VEHICLE CONTINUES TO ROLL FORWARD. A MECHANICAL/ELECTRICAL NOISE CAN BE HEARD BEFORE THIS OCCURS. THIS IS MORE NOTICEABLE ON WET ROADS OR ROADS WITH A STEEP DECLINE.

AT LOW SPEEDS (PARKING SPEED, SCHOOL PICKUP LINES, CREEPING TRAFFIC SPEED) THE BRAKE PEDAL WILL LOSE ALL BOOST PRESSURE. THE BRAKE PEDAL BECOMES EXTREMELY STIFF AND INEFFECTIVE. THIS SITUATION OCCURRED ON A FEW OCCASIONS AND CAUSED GREAT ALARM WITH MYSELF AND MY WIFE. GREAT POTENTIAL EXISTS FOR AN ACCIDENT INVOLVING MACHINERY, ANIMALS OR HUMAN BEINGS. THE VEHICLE WAS TAKEN PROMPTLY TO THE LOCAL GMC DEALERSHIP FOR SERVICE WITH A COPY OF GM SERVICE BULLETINNO.: PIT5361B. THE DEALER KEPT THE VEHICLE FOR SEVERAL DAYS TO PERFORM AN EXISTING SAFETY RECALL FOR STEERING ANOMALIES (RECALL # 18289) AS WELL AS DIAGNOSE AND REPAIR THE BRAKE BOOST ISSUE. SERVICE BULLETIN PIT5361B WAS FOLLOWED AND THE VACUUM PUMP ASSEMBLY WAS REPLACED TO RESOLVE THE BRAKE BOOST ISSUE. THIS REPAIR OCCURRED AT 40728 MILES - JUST BEYOND WARRANTY COVERAGE TERMS. TOTAL COST OF REPAIR $686.56. THE BRAKE BOOST ISSUE HAS NOT REOCCURRED TO DATE SINCE THE REPAIR. THIS VEHICLE IS NOT ABUSED OR INVOLVED IN ANY RIGOROUS ACTIVITY. IT IS A GENERAL USE VEHICLE AND IS USED PRIMARILY FOR FAMILY ERRANDS AND ROAD TRIPS.

ALL SCREENS IN VEHICLE SHUT OFF WHILE DRIVING, ALMOST LIKE THE VEHICLE TURNED OFF. THEN I WAS GIVING A SERVICE NOTIFICATION THE THE STABILITRAK SYSTEM.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE THE VEHICLE WAS STATIONARY, THE STEERING SEIZED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC AND THE BATTERY WAS REPLACED, BUT IT DID NOT CORRECT THE FAILURE. CRAIN BUICK GMC OF CONWAY (710 SOUTH AMITY ROAD, CONWAY, ARKANSAS 72032, (501) 542-6045) WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 36,100. THE VIN WAS UNKNOWN.

WHEN BRAKES ARE APPLIED THE PEDAL IS HARD AND VEHICLE DOES NOT STOP. IT SEEMS TO HAPPEN WHEN GOING SLOW FOR EXAMPLE IN PARKING LOTS ETC. I HAVE READ OTHER ARTICLES WHERE PEOPLE ARE EXPERIENCING SAME THING AT HIGH AND LOW SPEEDS. IT DOES NOT HAPPEN ALL THE TIME, BUT IT STARTED 11/2017 AND I'VE EXPERIENCED THIS FOUR TIMES NOW AND THE WIFE AS WELL.CALLED GM THE OTHER MORNING WAS TOLD THERE WAS NO RECALL FOR THIS ISSUE PER GM SOME VEHICLES WERE AFFECTED BUT NOT MINE, EXPLAINING WHAT I'VE FOUND AND WAS TOLD TO TAKE THE VEHICLE TO DEALER FOR DIAGNOSTIC.ASKED IF IT WOULD HAVE TO BE THE DEALER CAUSE THEY WERE EXPENSIVE TO DO DIAGNOSTIC. WAS TOLD YES AND IT WOULD HAVE TO BE OUT OF POCKET.

LOSES POWER WHEN TRYING TO ACCELERATE, PRESENTS A PROBLEM WHEN TRYING TO MANEUVER IN TRAFFIC AND SEMI STALLS FOR .2 SECONDS ENOUGH TO CAUSE A DELAY

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. THE CONTACT STATED THAT THE AIR CONDITIONING FAILED. THE CONTACT CALLED GAY BUICK GMC AT (832) 769-4379 (LOCATED AT 3033 GULF FWY, DICKINSON, TX 77539) AND WAS INFORMED THAT THEY WERE AWARE OF THE FAILURE, BUT THERE WERE NO RECALLS. THE VEHICLE WAS NOT TAKEN TO A DEALER. THE VEHICLE WAS LATER TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE CONDENSER WAS FRACTURED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER STATED THAT THERE WERE NO RECALLS AND PROVIDED CASE NUMBER: 8-4727896957. THE APPROXIMATE FAILURE MILEAGE WAS 44,000.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. AN INDEPENDENT MECHANIC CALLED ON BEHALF OF THE VEHICLE OWNER, WHO IS DEAF. THE CONTACT STATED THAT THE BRAKE PEDAL FAILED TO DEPRESS AND STOP THE VEHICLE PROPERLY. THE CONTACT DIAGNOSED THAT THE VACUUM PUMP AND THE BRAKE BOOSTER SYSTEM WERE MALFUNCTIONING. THE DEALER (GULF COAST CHEVROLET BUICK GMC, 1901 W. FM 523, ANGLETON, TX 77515, (800) 593-5226) STATED THAT THERE WERE NO RECALLS ON THE VEHICLE. THE MANUFACTURER WAS CALLED AND THE CONTACT WAS PROVIDED A CASE NUMBER. THE MANUFACTURER STATED THAT THE VEHICLE HAD TOO MANY MILES TO BE COVERED BY THE EXTENDED WARRANTY. THE FAILURE MILEAGE WAS 69,000.

VEHICLE IS SHUTTING OFF AT ANY GIVEN SPEED, IE. 35 MPH IN TOWN OR 70 MPH ON A HIGHWAY WITH ONCOMING TRAFFIC. WHEN VEHICLE SHUTS OFF, LOSS OF ALL CONTROL OF THE VEHICLE TAKES PLACE. NO BRAKES, NO STEERING, NOTHING UNTIL THE VEHICLE RANDOMLY TURNS BACK ON. THIS IS NOT A CONSISTENT OCCURRENCE TO KNOW WHEN IT IS GOING TO HAPPEN OR BE PREPARED FOR IT TO HAPPEN. I WATCHED MY HUSBAND SHOOT ACROSS THE ROAD INTO THE OTHER LANE AND ALMOST PUT THE VEHICLE OVER A BANK ONE NIGHT WHEN IT HAPPENED. THIS HAS BEEN AN ISSUE SINCE JANUARY 2018 FOR US, WE HAVE TAKEN IT TO THE DEALER WHERE IT WAS PURCHASED MULTIPLE TIMES FOR THEM TO TELL US THEY CAN'T DUPLICATE THE ISSUE AND NOTHING IS COMING UP IN THEIR SYSTEM FOR AN ERROR CODE. IT HAS CAUSED A MAJOR INCONVENIENCE FOR MY FAMILY, AS WE DON'T DARE PUT OUR CHILDREN IN THE TRUCK LEAVING THE RESPONSIBILITY SOLELY ON ONE PARENT TO TRANSPORT THE KIDS TO AND FROM DAYCARE. I WORRY FOR THE SAFETY OF MY HUSBAND ON A DAILY BASIS.

HARD BRAKE PEDAL WHEN ATTEMPTING TO STOP, HAPPENS ON HWY WITH FAST SPEEDS, SLOW SPEEDS IN PARKING GARAGE AND IN REVERSE.

WHILE DRIVING AT HIGHWAY SPEED, I ENTERED AN OFF RAMP TO FIND NO POWER ASSIST TO MY BRAKES. THE PEDAL WAS EXTREMELY STIFF. I CAME VERY CLOSE TO HAVING A COLLISION WITH THE CAR IN FRONT OF ME. I CONTACTED MY MECHANIC IMMEDIATELY, HE CHECKED IT OUT AND IT APPEARS THE VACUUM PUMP HAS FAILED WITHOUT WARNING. I HAVE OWNED THIS VEHICLE SINCE NEW AND HAVE HAD NO PROBLEMS WITH IT UNTIL THIS ISSUE.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING 10 MPH, THE VEHICLE STALLED AND COMPLETELY LOST POWER. THE VEHICLE WAS TAKEN TO JOE BASIL CHEVROLET (5111 TRANSIT RD, DEPEW, NY 14043, (716) 683-6800) WHERE THE CONTACT WAS INFORMED THAT A NEGATIVE BATTERY CABLE NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE DEALER WAS NOT SURE IF IT WOULD REMEDY THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 29,597.

THIS POST IS ABOUT MAKING THE PUBLIC AWARE OF A POTENTIAL PROBLEM. ALTHOUGH THE MANUFACTURER DID NOT STEP UP AND DO THE RIGHT THING, I'M CONCERNED OTHERS MAY HAVE DEALT WITH THIS PROBLEM OR IT MAY HAPPEN IN THE FUTURE. ON AUGUST 29, 2018, MY TRUCK WAS PARKED ON MY DRIVEWAY BY 4PM AFTER RUNNING ERRANDS FOR A COUPLE OF HOURS. AT 6PM MY HUSBAND WENT OUT TO GET SOMETHING OUT OF IT AND SAW IT HAD CAUGHT ON FIRE. NOTHING WAS LEFT PLUGGED IN AND THERE WAS NOTHING FLAMMABLE IN THE TRUCK. THE FIRE DEPT WAS CALLED AND UPON INSPECTION STATED THE FIRE HAD STARTED IN THE CENTER CONSOLE AND SPREAD TO THE FRONT PASSENGER SEAT. THE CAUSE OF THE FIRE LOOK TO BE WIRING THAT OVERHEATED INSIDE THE CONSOLE WHERE THE WIRING CONNECTED TO 2 USB PORTS. GM INSPECTED THE DAMAGE AND FOUND THERE WAS NOT A MANUFACTURER DEFECT AND THE CAUSE OF THE FIRE WAS FROM AN EXTERNAL SOURCE. IRONICALLY, THEIR 3RD PARTY "EXPERT" FIRE INVESTIGATOR WAS NOT AWARE THERE WAS A WIRING HARNESS LOCATED BEHIND THE USB PORTS AND HAD TO BE SHOWN THEIR LOCATION. MY INSURANCE COMPANY IS NOW INVESTIGATING THE INCIDENT. I'M ASKING THEM TO LOOK INTO THE 12V POWER OUTLET POSSIBLY OVERHEATING AS I KNOW OF SOMEONE WHO HAD THEIRS OVERHEAT IN THEIR 2018 CHEVY SILVERADO. THE DAY AFTER THE FIRE I SENT PHOTOS TO THEM AND THEY COULD NOT BELIEVE THE DAMAGE. WHEN I TOLD THEM THE OUTCOME OF GM'S INVESTIGATION THEY WERE DUMBFOUNDED. I'M FORTUNATE NO ONE WAS HURT, BUT AM AFRAID THIS MAY HAPPEN TO SOMEONE ELSE. I MADE A 40K + INVESTMENT WITH GM AND

TL* THE CONTACT OWNS A 2015 GMC SIERRA DENALI. WHILE DRIVING APPROXIMATELY 70 MPH, THE BRAKE PEDAL WAS APPLIED, BUT FAILED TO RESPOND. THE CONTACT HAD TO APPLY PRESSURE TO THE BRAKE PEDAL WITH BOTH FEET TO STOP THE VEHICLE. THE DEALER (JAY BUICK GMC, 18800 ROCKSIDE RD, BEDFORD, OH 44146, 440-232-5000) ORDERED THE REPLACEMENT OEM PART; HOWEVER, THE CONTACT HAD THE BRAKE SYSTEM VACUUM PUMP INSTALLED BY AN INDEPENDENT MECHANIC. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 82,000.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. THE CONTACT STATED THAT THE AIR CONDITIONER FAILED TO FUNCTION. THE VEHICLE WAS TAKEN TO VARNEY BUICK GMC MAZDA (LOCATED AT 260 HOGAN RD, BANGOR, ME 04401, (866) 240-4451) WHERE IT WAS DIAGNOSED THAT THE CONDENSER NEEDED TO BE REPLACED DUE TO A CRACK. THE VEHICLE WAS REPAIRED. THE MANUFACTURER STATED THAT THE VIN WAS NOT INCLUDED IN A RECALL AND REFERRED THE CONTACT TO NHTSA. THE APPROXIMATE FAILURE MILEAGE WAS 55,911.

I HAVE FUEL RETURN LINE LEAKING GAS IS THIS COVERED UNDER GMC WARRANTY

I WAS BACKING UP AND THE BRAKE PEDAL GOT HARD AND WOULD NOT STOP THE TRUCK. I TRIED TO GO FORWARD AND THE SAME THING HAPPEN.

WHEN MAKING SLIGHT LEFT TURNS, THE TRUCK WOULD FLASH STABILITRAK ON THE DISPLAY AND THE STEERING WHEEL WOULD AUTOMATICALLY PULL OUT OF MY HANDS AND MAKE THE WHEELS STRAIGHTEN UP. THE RADIO WOULD THEN GO DEAD AND THEN 5 TO 10 SECONDS LATER THE ENTIRE TRUCK WOULD TURN OFF. THIS HAPPENED WHILE DRIVING DOWN THE ROAD. THIS HAPPENED ON 2 SEPARATE OCCASIONS WITH NO OTHER WARNINGS. I CONTACTED GMC AND THEY HAVE NOT GIVEN ME ANY TYPE OF ANSWER OR ASSISTANCE.

VACUUM PUMP VACHOSE ASSY BRAKE BOOSTER AND MASTERCYCLINDER FAILURE WHICH CAUSE BRAKE FAILURE WHILE DRIVING. HAPPENED SEVERAL TIMES UNTIL 'SERVICE TRAILER BRAKE' LIGHT CAME ON. NO BRAKES, NO WAY TO PRESS DOWN PEDAL. GMC REFUSES TO ASSUME RESPONSIBILITY FOR REPAIR. COST: $1311.16

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE OPERATING THE VEHICLE AT VERY LOW SPEEDS AND WHILE PULLING INTO A PARKING SPACE, THE BRAKES SUDDENLY MALFUNCTIONED. THE FAILURE CAUSED THE BRAKE PEDAL TO EXTEND TO THE FLOOR AND THE VEHICLE WOULD NOT IMMEDIATELY STOP. THE CONTACT STATED THAT THE FAILURE OCCURRED ON SIX SEPARATE OCCASIONS. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER (MARSHALL CHEVROLET, 1601 S. STATE ST, JERSEYVILLE, IL), BUT THE FAILURE WAS UNABLE TO BE DUPLICATED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 2,500.

ROOF ANTENNA LEAKING AFTER 2.5 YEARS THE ROOF MOUNT ANTENNA FOR XM RADIO STARTED LEAKING INTO HEADLINER CAUSES RADIO TO GET INTERMITTENT SIGNAL. LEAK TRAVELS DOWN DRIVER SIDE PILLAR INTO DASH BOARD WHICH WILL CAUSE ELECTRICAL SHORTING AND FAILURE. THIS PROBLEM IS DUE TO A FAULTY DESIGN OF THE ANTENNA. THERE ARE THOUSANDS OF COMPLAINTS ONLINE REGARDING THIS PROBLEM. DEALER REFUSED TO REPLACE AT THERE EXPENSE. CONTACTED GM WHO ALSO REFUSED TO REPLACE IT. THIS WAS A $60,000 TRUCK LESS THAN 3YRS OLD. IT GOT MY ATTENTION BECAUSE I USE XM RADIO AND LOST RECEPTION. THERE MUST BE MANY MORE WITH THIS PROBLEM WHO DON'T EVEN KNOW IT BECAUSE THEY DON'T USE XM RADIO. THIS IS A SERIOUS PROBLEM HAVING A LEAK TRAVELING DOWN INTO DASHBOARD WHAT ELSE IS AFFECTED AIR BAGS, LIGHTS, BRAKES ETC. THE DESIGN OF THIS IS AWFUL GMC IS EXTREMELY NEGLIGENT NOT RECALLING ON THIS PROBLEM

TAKATA AIRBAGS DEPLOYED AFTER BEING ON DIRT TRAIL AND REENTERING ONTO MAIN ROAD. ALL 4 WHEELS MAINTAINED CONTACT WITH ROAD . THERE WAS NO ROLLING OF THE VEHICLE IN ANY DIRECTION. GMC IS STATING SYSTEM ACTED PROPERLY AS COMPUTER SHOWS EMINENT ROLLOVER. THE SUSPECTED CAUSE IS A MALFUNCTIONING YAW SENSOR. GMC SINCE MAKING DECISION WILL NOT RETURN VOICEMAIL'S (3) NOR EMAILS (4) THERE WERE MYSELF AND 2 OTHER IN VEHICLE AT TIME OF INCIDENT.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING ONTO A PAVED ROAD FROM A DIRT ROAD AT A LOW SPEED, THE DRIVER SIDE AIR BAG DEPLOYED WITHOUT WARNING OR IMPACT. THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO MARTIN CADILLAC (12101 W. OLYMPIC BLVD, CADILLAC BUILDING, LOS ANGELES, CA) WHERE A GMC ENGINEER INSPECTED THE VEHICLE, BUT THE CAUSE OF THE FAILURE WAS NOT DISCLOSED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND STATED THAT THE VEHICLE OPERATED AS INTENDED AND NO FURTHER ACTION WOULD BE TAKEN. THE CONTACT WAS PROVIDED CASE NUMBER: [XXX]. THE FAILURE MILEAGE WAS APPROXIMATELY 33,000. *JS 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).

TRUCK HAS 3 PROBLEMS THAT CAN PUT MY FAMILY'S LIFE IN DANGER. 1- SOMETIMES OUT OF NOWHERE AT LOW SPEEDS WHEN YOU TURN THE STEERING WHEEL TO MAKE A LEFT OR RIGHT TURN THE 'STABILITRAC' LIGHT FLASHES IN THE SCREEN AND LOCKS AND WON'T LET YOU TURN THE STEERING WHEEL.AT THIS POINT YOU HAVE NO CONTROL OF THE STEERING WHEEL, IT LOCKS AND BOUNCES BACK AT YOU AND IF YOU KEEP TRYING TO TURN IT, THE ENGINE CUTS OFF ALL POWER AND IT STALLS, JUST DIES. I ALMOST GOT READ ENDED A COUPLE OF TIMES ALREADY DUE TO THIS PROBLEM. JUST THIS MORNING I WAS MAKING A RIGHT ONTO A LOCAL MCDONALD'S AND THE STEERING WHEEL LOCKED AND THE ENGINE DIED ON ME. I HAD TO QUICKLY TURN IT ON AGAIN AND KEEP GOING.ANOTHER TIME IT HAPPEN AS I WAS MERGING INTO TRAFFIC. VERY SCARY! PROBLEM NUMBER TWO, I THINK ITS JUST A MATTER OF TIME BEFORE THE STEERING WHEEL LOCKS ON ME ON HIGH SPEEDS. SOMETIMES WHEN I'M ON THE FREEWAY, THE SAME CHIMES COME ON WHEN I STEP ON THE BRAKES, THE CENTER SCREENS GOES BLACK, AND THE SAME 'STABILITRAC' WARNING COMES ON THE SMALLER SCREEN BEHIND THE STEERING WHEEL. I'M AFRAID TO TAKE IT ON A WINDING ROAD FOR FEAR THAT THE STEERING WHEEL WILL LOCK ON ME CAUSE AN ACCIDENT. 3- SERVICE BRAKE CONTROLLER SIGN AND CHIMES COME ON ANT WON'T GO AWAY. IT JUS KEEPS ON POPPING ON AND ON AND ON AND THEY GO AWAY WHEN YOU TURN OFF THE TRUCK, AND COME ON AGAIN MONTHS OR WEEKS LATER. I DID HAVE IT CHECKED AT MY LOCAL DEALERSHIP.THEY TESTED IT, SOLD ME NEW GROUND AND HOT WIRES. IT WAS GOOD FOR ABOUT 4 WEEKS BE

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. THE CONTACT STATED THAT THE VISIBILITY WAS EXTREMELY POOR FOR THE OEM HEAD LAMP ASSEMBLIES AND THE DAY TIME RUNNING LIGHTS. THE DEALER (VARNEY BUICK GMC MAZDA, 260 HOGAN RD, BANGOR, ME 04401, 207-990-1220) WAS NOTIFIED SEVERAL TIMES THAT WHEN THE HIGH BEAMS WERE UTILIZED, THE VISIBILITY WAS EXTREMELY POOR. THE FAILURE WAS MORE PREVALENT DURING INCLEMENT WEATHER. THE MANUFACTURER WAS NOTIFIED AND DID NOT OFFER ANOTHER OEM LIGHT FIXTURE WITH A HIGHER VOLUME OF LIGHTING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED AND DID NOT ASSIST. THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 1,000.

HAVING ISSUES WITH HARD BRAKE PEDAL. IT HAPPENED A FEW TIME WHEN THE TRUCK WAS NEW BUT COULD NEVER DUPLICATE IT. TWICE IT ALMOST CAUSED AN ACCIDENT. I HAVE SINCE FOUND A WAY TO DUPLICATE IT. WHEN BACKING A BOAT TRAILER DOWN A RAMP EVERY TIME THEY BECOME HARD, I HAVE TO RIDE THE EMERGENCY BRAKE, BUT IT ONLY HAPPENS WHEN THE BOAT IS ON THE TRAILER. I HAVE RESEARCHED THIS OVER THE YEARS BUT NOT TILL RECENTLY HAVE I SEEN OTHER REPORTS OF TRUCK WITH THIS ISSUE. I HAVE NOT CONTACTED THE DEALER YET BUT WILL IN THE NEXT WEEK OR SO WHEN I CAN TAKE OFF TO GO. I DO NOT NOW DATE OF FIRST OCCURRENCE BUT I PUT A RANDOM DATE IN 2015.

CALLED DEALERSHIP ABOUT ONE WEEK AFTER PURCHASE IN AUGUST 2015 AND REPORTED VIBRATION IN VEHICLE AT SPEED OF 70 AND ABOVE. NO RETURN CALL. NEVER HAD TRUCK INSPECTED. VIBRATION HAS INCREASED WITH AGE OF THE TRUCK. TRUCK HAS 55,000 MILES ON IT NOW. JUST NOW FINDING OUT ABOUT NUMEROUS COMPLAINTS HAVING BEEN FILED. FOUND INFORMATION AT AUTOGUIDE.COM. GM HAS ISSUED BULLET6IN #PI1354C RELATIVE TO THIS.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. THE CONTACT STATED THAT THE VEHICLE FAILED TO PASS STATE INSPECTION DUE TO MASTER CYLINDER, VACUUM PUMP, BRAKE BOOSTER, AND HOSE LEAKAGE. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 33,000.

WHEN BRAKES ARE APPLIED THE PEDAL IS HARD AND VEHICLE DOES NOT STOP. IT SEEMS TO HAPPEN WHEN GOING SLOW FOR EXAMPLE IN PARKING LOTS ETC. I HAVE READ OTHER ARTICLES WHERE PEOPLE ARE EXPERIENCING SAME THING AT HIGH SPEEDS. IT DOES NOT HAPPEN ALL THE TIME, BUT IT STARTED 7/1/2018 AND I'VE EXPERIENCED THIS FOUR TIMES NOW. TOOK TO DEALER THIS MORNING THEY REFUSED TO LOOK AT ARTICLES EXPLAINING WHAT I'VE FOUND.

TRUCK WILL NOT CHANGE GEARS AND SPUTTERING. BAD GAS MILEAGE AND NOT WANTING TO START.

A/C CONDENSER LEAKING FREON IT'S A KNOWN PROBLEM FOR GM

WHILE IN MOTION THE BRAKE PEDAL GOES HARD AND IS DIFFICULT TO STOP. I BELIEVE THIS IS THE CAUSE OF A LOW SPEED INCIDENT I HAD EARLIER THIS YEAR. THE ISSUE OCCURRES MOSTLY AT SLOW SPEEDS IN STOP AND GO TRAFFIC. IF FEELS LIKE THE BRAKE BOOSTER FAILS AND THE PEDAL IS BOTTOMED OUT. IT HAPPENS FREQUESNTLY WHILE HAULING A TRAILER IN REVERSE. VERY DANGEROUS SITUATION.

BRAKE FAILURE DUE TO BAD VACUUM PUMP

I RECENTLY PURCHASED A GMC SIERRA 1500 FROM CARMAX FITTED WITH A SET OF CROSSCONTACT LX20'S. THE TRUCK HAD ABOUT 18,000 MILES OR FEWER WHEN I BOUGHT IT AND IT NOW HAS 31,000 MILES ON IT. THE TWO FRONT TIRES STARTED TO DISINTEGRATE AROUND 28,000 MILES AND NOW HAVE BECOME UNSAFE AND UNUSABLE. I CONTACTED YOUR CUSTOMER SUPPORT OFFICE AND WAS TOLD THAT THEY COULD NOT DO ANYTHING FOR ME AS I WAS THE SECOND OWNER AND I SHOULD CONTACT CARMAX. OF COURSE CARMAX SAYS, CALL CONTINENTAL. THE CODE ON ALL 4 OF MY TIRES IS A32A WBDE 2215. I HAVE ENCLOSED A FEW PHOTOS OF THE FRONT TIRES, THE BACK TIRES ARE SHOWING THE SAME SEPARATION FROM THE STEEL BELT, BUT NONE OF THE TREAD HAS COME OFF YET. I BELIEVE THE TURNING BACK AND FORTH OF THE FRONT TIRES HAS ACCELERATED THEIR DEMISE. I HAVE PURCHASED 4 NEW GOODYEAR TIRES BECAUSE I TRULY FEAR FOR MY FAMILIES SAFETY. I WOULD APPRECIATE YOUR TIME AND CONSIDERATION IN THIS MATTER.

TAKATA RECALL. I RECENTLY CALLED THE DEALERSHIP WHERE THEY CONFIRMED MULTIPLE CALLS ON THE AC CONDENSER LEAKING FREON. WE HAVE TWO 2015 GMC SIERRAS WITH THE SAME LEAK. A SERVICE CENTER EMPLOYEE/MECHANIC AT BOB BROCKLAND IN COLUMBIA IL VERIFIED MULTIPLE COMPLAINTS.

AC BLOWING WARM AIR - MAY HAVE A CONDITION WHERE THERMAL CYCLING ON THE COMBINATION TRANSMISSION FLUID/OIL AND AC CONDENSER COOLER CREATES A CRACK THAT MAY ALLOW REFRIGERANT TO ESCAPE. THIS CONDITION CONSEQUENTLY MAY DEACTIVATE THE AC SYSTEM.

WHILE DRIVING IN STOP AND GO TRAFFIC SPEEDS THERE HAVE BEEN A NUMBER OF OCCASIONS THAT THE BRAKE PEDAL GOES HARD AND THE TRUCK WILL NOT STOP. I HAVE NOTICED ON OTHER FORUMS THAT THIS SEEMS TO BE A COMMON ISSUE.

HVAC - NO AC COLD AIR.

MY AC CONDITIONS DEVELOPED A PIN HOLE LEAK ALONG THE SEAM/BRAZE.