2017 GMC Sierra 1500 Brakes

VACUUM PUMP, BRAKE PEDAL STIFF WHEN REVERSING, HARD TO STOP.

THE BRAKE PEDAL BECOMES EXTREMELY STIFF WHEN TRYING TO STOP AT SLOW SPEEDS, ESPECIALLY IN PARKING LOTS. THE VEHICLE BECOMES VERY DIFFICULT TO STOP ALMOST CAUSING CRASHES. GM DEALERSHIP REPEATEDLY TESTS VEHICLE AND TRIES TO CLAIM THERE IS NOTHING WRONG AND I'M MAKING A MISTAKE. HAD TO TAKE VEHICLE IN SEVERAL TIMES AND EVENTUALLY THEY FOUND A FAILED VACUUM PUMP. THEY TRIED TO MAKE ME PAY $700+ FOR THE REPAIR EVEN THOUGH ITS A KNOWN ISSUE. THEY ARE TRYING TO AVOID DOING A RECALL AND PUTTING THEIR BOTTOM LINE AHEAD OF SAFETY. THESE TRUCKS ARE DANGEROUS.

THE BRAKES ARE NOT WORKING AT SLOW SPEEDS. I WAS PARKING IN A PARKING GARAGE WHILE PULLING UP TO THE CONCRETE WALL AND PUSHING ON THE BRAKE THE TRUCK ALMOST DIDN'T STOP AND THE PEDAL GOT VERY STIFF. WHILE DRIVING HOME IN TRAFFIC THE TRUCK DID THE SAME THING AND I ALMOST HIT THE CAR IN FRONT OF ME. IT SEEMS TO BE AT SLOWER SPEEDS AND THE BRAKES ARE LOSING ALL POWER. THE TRUCK IS ONLY 2 YEARS OLD AND NORMALLY STOPS ON A DIME. TOOK TO THE DEALER TODAY, AND THEY SAID THE VACUUM PUMP IS BAD AT ONLY 39,000 MILES.

WAS DRIVING MY 2017 GMC SIERRA WITH MY WIFE AND YOUNG SON. I WENT TO STOP AT A RED LIGHT AND HAD NO BRAKES. THE BRAKE WAS VERY HARD TO PUSH AND MADE A FUNNY CLICKING NOISE WHEN I SHOVED IT TO THE FLOOR. I WAS BARELY ABLE TO AVOID A COLLISION AND PULL INTO A PARKING LOT. I NOTICED THEN, THAT THE SERVICE BRAKE ASSIST LIGHT WAS ON. THE TRUCK GAVE NO PRIOR WARNING THAT ANYTHING WAS WRONG. THIS WAS A VERY SCARY SITUATION THAT COULD HAVE RESULTED IN A TERRIBLE ACCIDENT.

BREAKS HAVE OUT AT 36.5K MILES. VACUUM TO BREAK LINE MESSED UP. WAS IN BUSY TRAFFIC GOING 50-60MPH. TRAFFIC SLOWED DOWN BUT TRUCK WOULD NOT BREAK. VERY VERY SCARY SITUATION. GMC DEALERSHIP KNEW EXACTLY WHAT THE ISSUE WAS OVER THE PHONE. TOOK IT TO THEM AND CAR WAS OUT OF WARRANTY BY 500 MILES. 800$ OUT OF POCKET AND TOOK THEM 10 SECONDS TO IDENTIFY ONCE THE VEHICLE WAS AT THE DEALERSHIP. SEEMS LIKE THEY KNOW THE ISSUE VERY WELL

'TAKATA RECALL' DRIVING THE TRUCK TO THE STORE, WHEN I WAS PARKING THE BRAKE PEDAL GOT EXTREMELY HARD, LOST ALL BRAKE FUNCTIONS. IMMEDIATELY TOOK THE TRUCK (2017 GMC SIERRA 1500) TO THE DEALERSHIP THEY TOLD ME IT WAS THE VACUUM PUMP AND BELT. HAD IT REPLACED UNDER THE WARRANTY ON NO ADDITIONAL COST.

AFTER EXITING I285 NORTH OF ATLANTA ONTO THE ASHFORD DUNWOODY EXIT, MY BREAKS STOPPED WORKING AND THE PEDAL WOULD NOT PRESS DOWN. I WAS IN MOTION AT THE TIME AND HAPPENED TO BE MOVING UP AN INCLINE. I HAD TO DOWN SHIFT FROM DRIVE INTO A LOWER GEAR AND USE THE EMERGENCY BREAK TO AVOID A COLLISION WITH THE CAR IN FRONT OF ME.

WHILE DRIVING ON THE HIGHWAY AT 70MPH, A SERVICE BRAKE ASSISTANT WARNING CAME ON. THE BRAKES AT THAT POINT WERE EXTREMELY DIFFICULT TO USE AND THERE WAS NO WAY FOR A QUICK STOP. WAS ABLE TO GET TO A DEALERSHIP WHERE THEY HAD TO REPLACE THE MASTER CYLINDER, THE BOOSTER PUMP, VACUUM PUMP AND TUBING. COST FOR THE REPAIR WAS OVER $1,200.

VACUUM PUMP ISSUE WITH GMC SIERRA - I NOTICED A PROBLEM BRAKING MY PICKUP, SPONGY BRAKES, HARD STOPPING. I TOOK IT TO MY LOCAL CHEVY DEALER (PORTSMOUTH CHEVROLET, PORTSMOUTH, NH). THEY DIAGNOSED IT AS A PROBLEM WITH THE VACUUM PUMP AND REPLACED THE PUMP UNDER WARRANTY. I WANTED TO ALERT YOU BECAUSE I SAW A NOTICE ON FOX NEWS THIS EVENING ABOUT YOUR INVESTIGATION OF THE PROBLEM WITH EARLIER MODELS AND WANTED TO ALERT YOU THAT MINE IS A 2017. YOU MAY WANT TO EXPAND THE INVESTIGATION TO INCLUDE LATER MODEL TRUCKS AND SUVS. LUCKILY I CAUGHT IT IN TIME, NO ACCIDENTS, NO INJURIES.

I ALMOST KILLED A KID TODAY PARKING FOR A BASEBALL GAME. I WAS TRAVELING SLOWLY AND PARKING WHEN MY BRAKES BECAME HARD TO PUSH AND FAILED. TRUCK WENT OVER CURB AND TOWARD KID PUTTING ON HIS CLEATS AND NOT FACING ME. I WAS ABLE TO PUSH AS HARD AS I COULD AND IT STOPPED. I BACKED UP AND BRAKES WORKED AGAIN. I HAVE 46,000 MILES ON THE TRUCK. I AM NOW AFRAID TO DRIVE IT, BUT IT SEEMS THEY ARE WORKING AGAIN. IF THIS IS COMMON, GMC NEEDS TO TAKE CARE OF THIS. SOMEONE WILL SOON BE HURT SERIOUSLY!

WAS STOPPED AT STOP LIGHT,WITH FOOT ON THE BRAKE. STARTED ROLLING FORWARD AND HAD TO PRESS HARDER ON THE BRAKE. WHEN HOLDING FOOT ON BRAKE PEDAL AND IN GEAR PEDAL SLOWLY MOVES DOWN TO THE FLOOR. TOOK VEHICLE TO DEALER WHO WAS LUCKILY CLOSE BY. THEY TESTED TRUCK BRAKE'S AND FOUND THE SAME THING. THEY KEPT TRUCK, AND REPAIRED THE NEXT DAY. MASTER CYLINDER WAS BAD. THEY BELIEVE THAT A SEAL MAY HAVE A CRACK,OR A NICK IN IT, ALLOWING PRESSURE TO RELEASE. THE DEALER SAID MORE THAN LIKELY GM WILL ASK FOR PART TO EXAMINE IT, SO THEY CAN'T TAKE IT APART. TRUCK HAD 3173 MILE'S ON IT.