2015 GMC Yukon Brakes

BRAKING BECOMES "HARD" AFTER BRAKING WHILE MOVING (E.G. IN RUSH HOUR TRAFFIC OR SLOWLY GOING DOWN A HILL).THIS STARTED WHILE GOING DOWNHILL IN AN ANIMAL RESERVE. I WAS INCHING FORWARD TO GET BETTER VIEWS OF THE ANIMALS. HALFWAY DOWN THE HILL THE BRAKES COMPLETELY FAILED. I HAD TO LITERALLY STAND UP ON THE BRAKE, AND IT STILL WOULDN'T STOP THE CAR. AFTER TAKING MY FOOT OFF THE BRAKE FOR A BIT, THE PROBLEM FIXED ITSELF. WHEN I TOOK IT TO THE DEALER, THEY SAID IT WAS A FAULTY VACUUM PUMP ($500 REPAIR), BUT ONLINE RESEARCH SAYS REPLACING THE VACUUM PUMP DOESN'T SOLVE THE PROBLEM. NOTE, THIS PROBLEM CONTINUES TO PERSIST.

VERY HARD/ STIFF BRAKE-PEDAL. IT'S VERY HARD TO STOP THE VEHICLE AT ANY SPEED. I ALREADY REPLACED THE BRAKE PADS AND THE PROBLEM STILL CONTINUES, IS A VERY DANGEROUS HAZARDS TO THE DRIVE THE VEHICLE IN THAT CONDITION. THE HARD /STIFF PEDESTAL IS IN THE CITY AND THE HIGHWAY.

BRAKE LIGHT FAILURE. FIRST ON DRIVER'S SIDE THEN MONTHS LATER ON PASSENGER SIDE. VEHICLE WAS IN MOTION. HUNDREDS OF COMPLAINTS ARE POSTED ON THE INTERNET YET GM WILL NOT RECALL.

DRIVING THE 2015 GMC YUKON, TRIED TO APPLY BRAKES, BRAKES WENT TO FLOOR AND NO BRAKING AVAILABLE. HAD TO JUMP A MEDIAN IN THE ROAD TO GET CAR STOPPED. CALLED DEALERSHIP, THEY WERE AWARE AND SAID DRIVE IT THERE, ALMOST WRECKED AGAIN PULLING INTO PARKING OT AT DEALERSHIP. YOU CANNOT DRIVE THE CAR LIKE THIS, VERY DANGEROUS. BEING TOLD ITS A COMMON PROBLEM THAT GMC KNOWS ABOUT BUT WILL ONLY FIX IF ITS 70,000 OR 6 YEARS. NOT OK, FIX THE PROBLEM MY CAR IS STILL UNDER WARRANTY UNTIL 100,000 MILES! VACUUM PUMP, VACUUM PUMP BELT, BRAKE BOOSTER, MASTER CYLINDER AND VACUUM PIPE ALL NEED REPLACING!!!!!! MAKE A RECALL BEFORE MORE PEOPLE ARE HURT!!!!

WHEN SLOWLY TURNING INTO GARAGE, BRAKE PEDAL BECAME "HARD" AND REQUIRED SIGNIFICANT FOOT FORCE TO STOP THE VEHICLE. THE CONDITION HAS NOT IMPROVED AND I WILL HAVE TO TOW THE VEHICLE TO THE DEALERSHIP FOR REPAIRS.

FAULTY BRAKE VACUUM PUMP CAUSED VEHICLE TO NOT BRAKE AT SLOW SPEEDS WHEN ATTEMPTING TO STOP IN DRIVE THRU RESTAURANT AND STOP LIGHT ON STATE ROUTE.

WHILE SITTING STILL AT A DRIVE THROUGH, BRAKE PEDAL WENT TO FLOOR AS IF IT HAD NO PRESSURE. HAD NO BRAKES! NO MATTER HOW HARD I STOOD ON PEDAL THE CAR WOULD NOT COME TO COMPLETE STOP WHEN ROLLING. BLEW THROUGH STOP SIGNS AND LIGHTS BECAUSE EVEN AT 10 MPH COULD NOT STOP VEHICLE FROM ROLLING. HAD JUST GOT OFF INTERSTATE DOING 70 MPH. DOWN HILL GRADE WAS IMPOSSIBLE. FOUND OUT THAT THIS WAS A KNOWN ISSUE BY GM INVOLVING FAILURE OF VACUUM PUMP BOOSTER. MANY REPORTS, HOPEFULLY NOT MANY DEATHS CAUSED.

REAR BRAKE AND TAIL LIGHTS DO NOT WORK INTERMITTENTLY. SOMETIMES THE LIGHTS WORK AND SOMETIMES THEY DON'T.

ON TWO SEPARATE OCCASIONS WHEN PARKING, AND DRIVING AT A HIGH RATE OF SOEEDV( 60 MPH)ON INTERSTATE IN SUDDEN STOP AND GO TRAFFIC BRAKES FAILED TO ENGAGE AFTER WORKING PROPERLY BEFORE AND AGAIN AFTER WITH MORE THAN A MONTH BETWEEN INCIDENTS . THE SECOND INCIDENT OCCURRED ON 12/31/18 AFTER THE VEHICLE HAD BEEN IN FOR ROUTINE OIL CHANGE AND SERVICE THAT INCLUDED A MULTI POINT INSPECTION AT THE GMC DEALERSHIP WHERE IT WAS PURCHASED BRAND NEW. THE VEHICLE IS FREQUENTLY SERVICED AS REQUIRED AND HAS TIRES WITH GOOD TREAD . THE FAILURE IS ALARMING AS IT OFTEN COMES WHEN TRYING TO MAKE A NECESSARY STOP AND THE FAILURE COMES OUT OF THE BLUE THEN RETURNS TO NORMAL. THIS OCCURRENCE SHOULD BE ADDRESSED BY THE MANUFACTURER AND SHOULD BE TAKEN VERY SERIOUSLY SINCE THE MATTER IS LITERALLY A MATTER OF LIFE AND DEATH. I WILL BE MAKING AN APPOINTMENT FOR MY VEHICLE TO BE CHECKED OUT AND WILL UPDATE THE DEALERSHIP FINDINGS .

AT SLOWER SPEED, BRAKES BECOME STIFF AND WAS UNABLE TO STOP VEHICLE. THE BRAKES DID NOT ENGAGE ALL THE WAY TO THE FLOOR AS NORMAL AND INSTEAD STOPPED ABOUT 1/4 OF THE WAY AND WAS SOLID EVEN WHEN PRESSING BOTH FEET ON THE BRAKE. ALMOST REAR-ENDED THE VEHICLE IN FRONT OF ME BUT SINCE I WAS AT SUCH A SLOW RATE OF SPEED I WAS ABLE TO ROLL A FEW FEET AND THE VEHICLE STOPPED. I HAD TO TURN THE VEHICLE COMPLETELY OFF AND START IT BACK UP AND IT SEEMED TO WORK FINE BUT THE NEXT TIME I WAS IN THE VEHICLE AT THE SLOW RATE OF SPEED, THE BRAKES THEN AGAIN WERE VERY HARD TO PRESS. I DO NOT FEEL COMFORTABLE DRIVING THE VEHICLE UNTIL THIS PROBLEM IS TAKEN CARE OF. I CONTACTED THE LOCAL DEALER AND THEY TOLD ME IT WOULD BE 5 DAYS UNTIL THEY COULD GET TO IT - DISAPPOINTED IN THAT CONSIDERING THE SEVERITY OF THE ISSUE.

TL* THE CONTACT OWNS A 2015 GMC YUKON. WHILE DRIVING AT LOW SPEEDS, THE BRAKES FAILED TO ENGAGE. THE BRAKE PEDAL BECAME EXTREMELY STIFF AND THE EMERGENCY BRAKE HAD TO BE APPLIED TO STOP THE VEHICLE. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOTIFIED AND REFERRED THE CONTACT TO NHTSA. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 47,200.

AT SLOW SPEED IN STOP AND GO TRAFFIC THE BRAKES WILL WORK ONE TIME AND THE NEXT TIME I WOULD HAVE TO STOMP THE BRAKE PEDAL TO GET THE SUV TO STOP IT WAS ON A STREET WHEN IT HAPPENED I HAVE TRIED TO CONTACT FLOW GMC OF WINSTON-SALEM MULTIPLE TIMES AND CAN'T GET ANYONE TO TALK TO ME

POWER BRAKES FAILING AT LOW SPEEDS-IN FREEWAY TRAFFIC-PULLING INTO DRIVEWAY REQUIRES STRONG PRESSING ON BRAKE PEDAL AS IF THE BRAKES ARE INTERMITTENTLY LOOSING POWER ASSIST

DRIVING AT A LOW SPEED THROUGH A DRIVE THROUGH AND MY BRAKES FAILED WHEN I TRIED TO STOP BEFORE PULLING OUT ONTO A CROSS STREET. PEDAL LOCKED, AND VEHICLE CONTINUED TO ROLL. AFTER STEPPING ON THE BRAKES A FEW TIMES THEY ENGAGED AGAIN. SAME PROBLEM HAPPENED AGAIN WHEN I WAS LEAVING A PARKING LOT, ONLY THIS TIME THE BRAKES WOULD NOT ENGAGE AFTER SEVERAL ATTEMPTS. I COASTED INTO A POTTED DECORATIVE TREE THAT STOPPED ME, SHIFTED INTO NEUTRAL AND BACK INTO DRIVE AND THEY BEGAN WORKING AGAIN. NO WARNING SIGNALS APPEARED ON DASH, AND BRAKES AND BRAKE FLUID HAVE BEEN CHECKED AND ALL ARE SATISFACTORY.

WHEN DRIVING IN STOP AND GO TRAFFIC OR CITY DRIVING THE BRAKE PEDAL WILL BECOME HARD TO PUSH AND LITTLE TO NO BRAKING POWER. BRAKES ARE FINE AT HIGH WAY SPEEDS.

I WAS DRIVING AND WITH WARNING SUV STARTED ACCELERATING AND I BRAKES WOOD NOT WORK I WAS NOT ABLE TO STOP INTILL I PRESS HARD ON THE PEDAL

REAR LEFT AND RIGHT BRAKE LIGHTS STOPPED WORKING WITH NO WARNING WHILE AT A STOP LIGHT IN THE CITY. APPARENTLY SEVERAL GMC YUKON 2015 OWNERS ARE HAVING THE SAME PROBLEM AND IT'S AN ELECTRICAL DEFECT WITH THE TAILLIGHTS IT'S NOT THE BULBS.

BRAKE PEDAL SUDDENLY GOT ROCK HARD WHEN I WAS TRYING TO SLOW DOWN, OUR TRUCK JUST KEPT GOING FORWARD, I WAS HELPLESS IN THAT SITUATION AND REALLY THOUGHT THAT ACCIDENT IS UNAVOIDABLE BECAUSE I WAS GETTING CLOSER AND CLOSER TO ANOTHER VEHICLE, AFTER PRESSING BRAKE PEDAL MANY MORE TIMES I WAS ABLE TO STOP OUR YUKON LITERALLY ONE INCH FROM A CAR IN FRONT OF ME

ON MULTIPLE OCCASIONS SPECIFICALLY WHILE TRAVELING AT LOW SPEED RATE SUCH AS SLOW MOVING TRAFFIC OR PULLING IN OR BACKING OUT OF PARKING SPACE. THE BRAKES BECOME HARD TO PUSH AND THE BRAKES DO NOT ENGAGE. YOU MUST PUSH THE BRAKES VERY HARD TO STOP. WE TOOK TO THE GM SERVICE AT OUR DEALERSHIP AND A BRAKE VACUUM PUMP WAS REPLACED. THE NEXT DAY WE WERE DRIVING THE VEHICLE AND THE BRAKES FAILED TO STOP. THANKFULLY WE WERE IN A PARKING LOT AND WERE ABLE TO STOP AGAINST BUMPER STOP. WE CALLED THE GM SERVICE DEALERSHIP AND THEY ARRANGED FOR A TOW. THIS IS EXTREMELY DANGEROUS SITUATION.

THE PASSENGER TAIL LIGHT IS WORKING INTERMITTENTLY. THE DEALER SAID THAT THE ONLY FIX IS TO BUY A NEW BRAKE LIGHT UNIT @ $650. AFTER SEARCHING ON LINE, OTHER OPTIONS ARE TO SEND BRAKE LIGHT UNIT OFF FOR REPAIR, OR PURCHASE AFTER MARKET BRAKE LIGHT UNIT. AS MANY PEOPLE THAT ARE HAVING THIS SAME ISSUE, IT SURE SEEMS LIKE GMC WOULD CORRECT THIS FAULTY BRAKE LIGHT.

THE PASSENGER SIDE BRAKE LIGHT ON MY 2015 GMC YUKON NO LONGER WORKS. THE COST TO REPLACE IT IS OVER $500. AFTER DOING SOME RESEARCH ON LED LIGHTS I BELIEVE THE BRAKE LIGHT IS FAULTY OR CHEAPLY MADE AND THAT IT SHOULD LAST A LOT LONGER THAN 3 YEARS AND 66,000 MILES.

TL* THE CONTACT OWNS A 2015 GMC YUKON. WHILE DRIVING APPROXIMATELY 5 MPH, THE BRAKE PEDAL STIFFENED AND THE VEHICLE DID NOT STOP WHEN THE PEDAL WAS DEPRESSED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE CONTACT USED THE EMERGENCY BRAKE TO STOP THE VEHICLE. THE VEHICLE WAS TAKEN TO KEYES WOODLAND HILLS BUICK GMC (6133 TOPANGA CANYON BLVD, WOODLAND HILLS, CA 91367) WHERE IT WAS DIAGNOSED THAT THE VACUUM PUMP FAILED AND DAMAGED THE ENTIRE BRAKING SYSTEM. THE TECHNICIAN REPLACED THE VACUUM PUMP AND THE ENTIRE BRAKING SYSTEM. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THERE WAS NO RECALL. THE FAILURE MILEAGE WAS 40,500.

TL* THE CONTACT OWNS A 2015 GMC YUKON. WHILE AT A DRIVE THRU WITH THE BRAKE PEDAL DEPRESSED TO THE FLOORBOARD, THE BRAKES FAILED. THE CONTACT HAD TO APPLY EXCESSIVE FORCE IN ORDER FOR THE VEHICLE TO STOP. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO STARLING CHEVROLET BUICK GMC (1001 E IRLO BRONSON MEMORIAL HWY, ST CLOUD, FL 34769, PHONE: (407) 892-5144), BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED AND STATED THAT THE FAILURE HAD TO BE DUPLICATED. THE APPROXIMATE FAILURE MILEAGE WAS 42,000. THE VIN WAS NOT AVAILABLE.

TL* THE CONTACT OWNS A 2015 GMC YUKON. WHILE DRIVING VARIOUS SPEEDS, THE BRAKE PEDAL WAS APPLIED AND THE VEHICLE FAILED TO STOP. THE BRAKE PEDAL HAD TO BE PUMPED SEVERAL TIMES TO STOP THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER WERE IT WAS DIAGNOSED THAT THE BRAKE BOOSTER NEEDED TO BE ADJUSTED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE THE BRAKE FAILURE WAS DUPLICATED AND DIAGNOSED THAT THE BRAKE BOOSTERS NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 35,000.

EARLIER THIS YEAR I PURCHASED A 2015 GMC YUKON DENALI. AFTER DRIVING IT A SHORT AMOUNT OF TIME I REALIZED THE BRAKE PEDAL IS LOCATED SIGNIFICANTLY HIGHER THAN THE GAS PEDAL. I'VE COME TO REALIZE THAT THE ~4INCH GAP IS CAUSING A SEVERE SAFETY HAZARD, ESPECIALLY IN EMERGENCY BRAKING SITUATIONS. MY FOOT, ALONG WITH OTHERS IN THE POST LINKED BELOW, OFTEN GETS CAUGHT IN THE LARGE GAP BETWEEN THE GAS AND THE BRAKE, ESPECIALLY WHEN MOVING QUICKLY. THERE HAVE BEEN MANY INSTANCES TO DATE WHERE THE SOLE OF MY SHOES HAS GOTTEN STUCK UNDER THE BRAKE PEDAL, PREVENTING ME FROM STOPPING IN TIME. I'VE NARROWLY AVOIDED AT LEAST 5 ACCIDENTS, BECAUSE OF THIS. FEARING THAT IT IS A MATTER OF TIME BEFORE IT RESULTS IN A COLLISION I REACHED OUT TO GMC TO SEE IF THERE WAS A FIX. THEY RESPONDED AND SAID THAT THE PEDALS ARE WORKING AS DESIGNED AND SAID THERE WAS NOTHING THAT CAN BE DONE. I'M VERY DISAPPOINTED IN THEIR RESPONSE, ESPECIALLY CONSIDERING THE CLEAR SAFETY HAZARD IT CREATES. IT IS A LARGE CAR, REQUIRING MORE BRAKING DISTANCE THAN MOST. ANY IMPEDANCE TO THE PROCESS SHOULD BE TAKEN SERIOUSLY ESPECIALLY IF IT IS A MANUFACTURER DESIGN FLAW SUCH AS THIS. SIMILAR COMPLAINTS HAVE BEEN VOICED IN THIS ONLINE CONSUMER THREAD. ONE OF MANY THAT I FOUND REITERATING THE PROBLEM. HTTP://WWW.TAHOEYUKONFORUM.COM/THREADS/GAS-BRAKE-PEDAL-DISTANCE.67500/