2015 GMC Yukon Brakes

Trailer braking system warning is incessantly going off, without cause. Extremely distracting. No way to stop it. Truck has never even towed / trailored anything. Has happened multiple times over the last 6 months. Today occurred 26 times during driving

While I’m parked or even driving I keep getting a alert on my speedometer ( Trailer Break System ) and it’s not a 1 time alert the whole time I’m driving it’s constantly alerting me yet I don’t even use my Trailer system at all, it’s concerning due to the distraction of trying to clear the screen constantly while I’m on the high way.

My breaks stop working in drive through, pulling in parking spots, backing out, slow speed of traffic. I found out it's the power break vacuum pump. It then says Service brakes on my dash when it occurs. This started about 2 weeks ago.

I have owned this vehicle almost 6 years, 40,000 when purchased used. Since purchase, we have had multiple issues with the trailer brake system randomly going off, dinging non stop, we had the problem serviced under our warranty and is now going off again. We do not tow but a few times every summer which is our jet skis however. This has happened multiple times prior to us using our warranty, the garage says they fix it but it keeps happening. I am very frustrated that I can't drive my vehicle down the road without a continues dinging. I looked up what "trailer brake system" means and found that it can be very dangerous and GMC's are known to have this problem, it is suggested that I lodge a complaint in hopes of getting this problem resolved from the manufacturer before a driver becomes seriously injured when the braking system decides to fail. I have read complaint after complaint. My warranty is now expired as I recently rolled over 100,000 miles, the GMC garage told me the part was around $78 but over $400 with install, ridiculous! I have already replaced this part a little over a year ago, I went to the garage where the warranty work was performed and got all the paperwork. Why has this problem not been categorized as a recall at this point? Something isn't right!

Brake vacuum repair. Could not stop vehicle. Brakes would get hard and vehicle kept moving.

While I was in line at the gas station to get gas, I moved up because the car I front of me had done so. After moving up a bit, I pressed my feet on the brake but the pedal was very stiff and the breaks did not hardly engage. I almost ran into the vehicle in front of me. This was very scary. So I called for a tow truck to pick me up but after a while they didn’t show. I started my car up to see if the the brakes engaged and they did. So I slowly and carefully drove myself to the GMC dealership in Southaven, MC which was 0.3 mile away from the gas station. The GMC dealership said that it was vacuum pump that was at fault and admitted it was a recall for this. But they said since my truck has already been serviced for this recall that I would have to pay to get it fixed. This is absolutely absurd. If the issue was not fixed properly in the first place, why would I be responsible for getting it fixed the second time?

Trailer brake system service keeps displaying

A message keeps popping up, “trailer brake system” it is poor wiring on GMC part. I did research on this and looked it up and other people had similar issues which can be very severe if driver continues to use after this message pops up. The message is so continuous that it could distract the driver, which could lead to a fatal accident.

My brakes went out and a “service” message came up and said “brake assist”

Last week, the power brake assist began fading away intermittently at low speeds, and caught my wife off guard in a grocery store parking lot when she pulled into a parking space and the brakes were not available. She had to plant both feet on the brake pedal in a panic stop before crashing into the car parked in front of her, and has since never driven the vehicle. This is a danger, and is potentially life threatening.

I almost died today. My brakes failed pedal went hard still is. Had to drive home with a stiff pedal and almost no brakes. Just paid $50,000 for this truck

Brakes are not stopping the vehicle on short distances as it should. They are doing a clicking kind of noise and can feel pulses in the brake pedal as though ABS are trying to activate. I know there is a recall out but is saying my 2015 is not listed yet is doing the same thing that is described in the recall.

FIRST NOTE THAT OUR RECALL FOR INCREASED PEDAL EFFORT WAS DONE ON OUR 2015 GMC YUKON 2 MONTHS BEFORE THIS INCIDENT. OUR VEHICLE WAS TRAVELING AT A HIGH RATE OF SPEED COMING HOME FROM MAMMOTH ON THE 15 FREEWAY. WE HEARD WHAT WE DESCRIBE AS A 'BUZZING' NOISE BUT WE COULDN'T TELL IF IT WAS OUR CAR OR ANOTHER ON THE FREEWAY IT ALMOST SOUNDED LIKE TIRE TREAD BEFORE YOU HAVE A BLOW OUT. WE SLOWED DOWN A BIT (65-70MPH) TO CHECK OUR SURROUNDINGS. A FEW MINUTES LATER WE STARTED TO LOSE CONTROL OF OUR YUKON. I STARTED TO UNBUCKLE AND CLIMB TO MY HUSBANDS DRIVERS SEAT BECAUSE HE WASN'T RESPONDING TO OUR SCREAMS AND HE LOOKED ILL. AS I WAS SCREAMING HIS NAME HE FINALLY SAYS INTO MY EAR WE HAVE TO CRASH! I PANICKED AND SCREAMED WHAT IS HAPPENING. HE REPLIES 'WE HAVE NO BRAKES'! THE PEDAL WAS AS HARD AS A ROCK LIKE A BRICK WAS UNDERNEATH IT AND OUR CAR WAS SERVING BACK AND FORTH. AS TRAFFIC SLOWED AND WE PREPARED TO CRASH INTO THE CAR IN FRONT THE CENTER DIVIDER OPENED UP AND WE WERE ABLE TO CRUISE DOWN IT UNTIL WE SLAMMED E BRAKE ON. THESE MODELS SHOULD NOT BE ON THE ROAD AND WE COULD HAVE VERY EASILY DIED OR KILLED ANOTHER FAMILY IN THE PROCESS! ABSOLUTELY UNACCEPTABLE ON GMS PART! TERRIFYING! THERE HAS BEEN NO VACUUM PUMP RECALL PLACED ON OUR YUKON AND IT WAS THE VACUUM PUMP THAT FAILED WHICH MADE THE BRAKES FAIL THERE WAS NO BACK UP ZERO BRAKES WITH A FAMILY OF 5 IN THE CAR ON THE FREEWAY! EVERY OWNER WHO OWNS A 2015/2016 SHOULD BE AWARE THAT THIS CAN HAPPEN TO THEM. IT'S NOT JUST AT SLOW SPEED. WE HAVEN'T STEPPED FOOT IN OUR CAR SINCE OUR KIDS ARE SCARED TO DEATH TO RIDE IN ANY CAR THAT LOOKS LIKE IT.

THERE WAS A RECALL FOR LOW BREAK FAILURE IT WAS RECALL 19V645. I HAD THIS DONE LAST YEAR AND TODAY I ALMOST HIT A CAR IN THE DRIVE THROUGH SIDE THE BRAKES ARE STILL DOING THE SAME THING GOING TO THE FLOOR. THEY NEED TO REPLACE THE FAULTY VACUUM PUMP. I EXPERIENCE THIS WHILE BACKING OUT AND STOPPING AT SLOW SPEEDS.

UPON PRESSING THE BRAKES WHILE PARKING, PEDAL STARTED VIBRATING AND BRAKE PEDAL BECAME IMPOSSIBLE TO PRESS. PEDAL CONTINUES TO REMAIN HARD TO PRESS FOR BRAKING.

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

WHILE TRAVELING ON A HIGHWAY TO WORK-RELATED CAMP, UPON ARRIVAL, CO-WORKERS INFORMED ME ONE OF MY BRAKE LIGHTS WAS OUT. BRAKELIGHT WORKED SPORADICALLY BEFORE COMPLETELY GOING OUT FOR ABOUT 2 WEEKS FINALLY BEING ABLE TO SHOW SERVICE DEPARTMENT. RESEARCHED CARGURUS AND NUMEROUS PEOPLE REPORTED THE CIRCUIT CRACKS AND EVENTUALLY BURNS OUT. DESIGN FLAW WHICH TURNS INTO A SAFETY ISSUE!!! RECALL IS NEEDED!!!

WHEN TOWING A SMALL CAMPER AND TRAVELING AT SLOW SPEEDS MY BRAKE BECOMES HARD AND MUST BE PRESSED VERY HARD TO SLOWLY STOP THE CAR. THIS DOES NOT HAPPEN ALL THE TIME BUT HAS HAPPENED MULTIPLE TIMES AND IS QUITE SCARY. THE VEHICLE TRAVELS FURTHER BEFORE STOPPING THAN WITH PROPER BRAKING WHICH HAS THE POTENTIAL OF PUTTING ME IN A DANGEROUS SITUATION. DEALER SAYS IT IS A VACUUM PUMP BEGINNING TO FAIL BUT THERE ARE NO PUMPS AVAILABLE NATIONWIDE SO I CANNOT HAVE IT REPAIRED! NOTES ABOUT DATES AND MILEAGE ARE FOR THE LAST OCCURRENCE AND AS CLOSE AS I CAN RECALL FOR EACH.

PULLING INTO PARKING SPOT LOW SPEED BRAKING POWER WAS LOST.. HARD BRAKE PEDAL.

VEHICLE BRAKES FEEL LIKE THEY LOCK UP OFTEN I HAVE TO PUSH AS HARD AS I CAN, THE DASH SAYS "BRAKE ASSIST" OR SOMETHING WHEN THEY FEEL LIKE THEY LOCK UP. I'VE ALMOST HIT CARS SEVERAL TIMES BECAUSE THEY LOCK UP LIKE THIS AND THERES NOTHING I CAN DO. HAPPENS OFTEN AND VARYING SPEEDS 10-70!

BRAKES BECOME HARD TO PUSH WHEN GOING BELOW 5MPH AND DOESN'T WANT TO STOP WHEN PRESSED. SOMETIMES YOU PRESS BRAKES AND PUSH AS HARD AS YOU CAN AND IT JUST KEEPS MOVING UNTIL HE SLOWLY COMES TO A STOP. IT HAPPENS WHEN TRAVELING AT A LOW SPEED OR EVEN AT A STOP AND YOU NEED TO BARELY MOVE FORWARD OR BACKWARD. MAKES IT HARD TO PARK IN TIGHT SPACES, MOVE IN TRAFFIC, AND IN A DRIVE-THRU. IT WILL HAPPEN MOVING FORWARD OR BACKWARD - THAT DOESN'T MATTER IT ALSO HAPPENS WHEN YOU COME TO A STOP AND BARELY MOVE AGAIN AND NEED TO STOP - BRAKES BECOME HARD AND IT STOPS ON ITS OWN TIME. I EVEN HAD IT HAPPEN WHEN I WAS AT A STOP LIGHT ON DOWNWARD HILL AND THE CAR IN FRONT OF ME STARTED MOVING AND SUDDENLY STOPPED AGAIN AND MY CAR DIDN'T WANT TO STOP. IT HAPPENS ALL THE TIME SINCE AROUND NOV 2018. IT SEEMS TO BE GETTING WORSE

BRAKES GET HARD WHEN TOWING MY BOAT AND SOMETIMES IN STOP AND GO TRAFFIC.

BRAKE PEDAL GETS HARD IN SLOW MOVING AND STOP & GO DRIVING CAUSING VEHICLE TO BE HARD TO STOP WITH NO BREAK POWER. THIS SITUATION GETS WORSE WHEN TOWING A TRAILER IN TRAFFIC AN DOWN HILL WHERE YOU NEED THE BRAKE POWER

BRAKES ARE UNRESPONSIVE AND STUFF BRAKE PEDALS AT LOW SPEEDS. WHILE DRIVING AT VERY LOW SPEEDS THE BRAKES WILL NOT ENGAGE AND STOP THE VEHICLE. I WAS PULLING INTO A PARKING STOP AND THE BRAKES WOULD NOT RESPOND UNLESS I STOMPED ON THEM GOING LESS THAN 5MPH. IT HAPPENS OFTEN WITH THE SAME SCENARIO. DRIVING AT A VERY LOW RATE OF SPEED AND MY VEHICLE WILL NOT STOP WHEN THE BRAKES ARE PRESSED.

WHEN TRAVELING AT LOW SPEEDS, LESS THAN 5 MPH, THE BRAKE PEDAL WILL BECOME HARD TO PUSH AND CAR WILL NOT COME TO A COMPLETE STOP, BUT WILL ROLL TO A STOP. THIS CAN HAPPEN TRYING TO PULL INTO A TIGHT SPOT OR WHILE IN A DRIVE-THRU OR IN STOP AND GO TRAFFIC OR SIMPLY YOUR OWN GARAGE OR BACKING OUT OF A DRIVEWAY OR FOUR WAY STOP, THE LIST CAN GO ON AND ON. IT HAPPENS ON A DAILY BASIS. I TOOK TO THE CERTIFIED DEALER TO HAVE THE RECALL PERFORMED BUT APPARENTLY THE RECALL WILL NOT WORK ON MY VEHICLE AS THE VACUUM PUMP NEEDS TO BE REPLACED. WHEN IT FIRST HAPPENED WAS OCT 2018 AND HAD ABOUT 80K MILES ON IT. IT CONTINUES TO HAPPEN AND NEEDS TO BE FIXED. IT IS A 2015 YUKON AND SHOULD NOT BE HAVING THIS TYPE OF PROBLEM. IT IS RIDICULOUS THAT GMC IS AWARE OF THE PROBLEM BUT WANTS TO NOT RECALL FOR THE PART TO BE REPLACED BUT HAVE ANYONE HAVING THE PROBLEM COME IN AND SEE IF THE SOFTWARE UPDATE WILL TAKE CARE OF THE PROBLEM. THEN AT THAT TIME LETS CHARGE THE CUSTOMER WELL OVER $600 TO HAVE THE PUMP REPLACED INSTEAD OF MAKING IT RIGHT BY THE CUSTOMERS. I WILL BE TAKING MY CAR ELSE WHERE TO HAVE THE PART REPLACED FOR HALF THE COST TO ME. THIS HAS BEEN A WASTE OF TIME AND I COULD HAD TAKEN ELSE WHERE TO BEGIN WITH MONTHS AGO, IF I WOULD HAD KNOWN THE TYPE OF RECALL THAT GMC WOULD BE GIVING. WHEN YOU PAY MORE THAN $60K FOR A VEHICLE THESE TYPE OF PROBLEMS SHOULD NOT HAPPEN.