2017 GMC YUKON Service Brakes Problems

This has been going on for a while now, but it’s getting worse overtime. If I push on my brakes more than twice the brake pedal locks up and I have to push extremely hard to get my vehicle stopped.. luckily I have never been going fast and had to worry about this. This is normally when I am pulling into a parking spot or I am backing up that I have to tap on my brakes a few times. A couple of times I have bumped the pole in front of my parking spot due to not having brakes. I just put in a general date as to when they started to get worse.

At parking lot speeds, there have been many incedents of brake failure, when pressing pedal to stop pedal pulsates and becomes very hard to stop the yukon. there seems to be a vacume or booster issue. Yukon will be fine for days then reaccure when slowing at stop sign or waitng at red light and moving foward in slow traffic to sign or llight and then in happens again. scary and unreliable when using brakes at low speed intersections or continous stop and go's

At low idle speeds like in a parking lot we almost hit another car because the brakes were very hard to press. No power brakes. Felt as I was having to stand on the brake pedal with both feet to stop my vehicle from hitting another car at a grocery store parking lot going 5 mph! A light flashes on and says”service brake assist “ light goes away and drives normal and brakes normal except when you get to a stop sign, or traffic light. This happens a few times and I’m not driving the car because of it because I might hit someone

Yukon break tail lamp problems. Brake lights work intermittently. Very dangerous! The break lights will work intermittently and then work. This was an issue with the 2016 models and GM issues a recall. There is no recall for 2017 which I don't understand because nothing has changed with the manufacturing process. I researched and there is a class action but in California only.

[XXX] Please call me to discuss this matter on my GMC Vehicle. [XXX] Yukon GMC This might not be your department but lead me to the right area local, federally or NHTSA so I can discuss these issues in detail Issues I have had that are not normal and maybe need to be on a recall or on consumer alert list for major defects on major components Brakes losing total traction had to be fixed unannounced (recall) Rear Tail lights giving up , had to be replace (Recall) AC system failing had to be replaced Paint completely fading on hood prematurely Transmission failure, had to be overhauled Engine Failure with need of Lifters All the above high cost to fix and having no vehicle in the interim . These issues have been during the warranty and now out of warranty. Other cars do not have these many issues. [XXX] [XXX] On Friday, April 25, 2025 at 01:05:11 PM EDT, [XXX] [XXX] > wrote: Attention Mary Barra I am very disappointed that my 2017 Yukon has engine failure now (lifters issue). I am expecting to get help from your office and see what you can do to resolve this matter . I have owned multiple vehicles including Mercedes SUV and BMW SUV with no problems like this.. I have had nothing but problems for just over 100k miles vehicle that is still considered fairly new . Most vehicles offer warranties up to minimum 100k longer than yours especially with engine failure Please contact me to discuss this and see if you can cover the issue at hand . I am not sure who i need to be contacting to resolve this issue with the local automobile dept, recalls, lemon law or any government agency that deals with this issue. I would like to resolve this issue whereby i am satisficed to purchase a vehicle like this in the near future. Currently the vehicle is at your dealership. The car was built with defects. VIN [XXX] Please call me at the below number. [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Brake pedal gets hard and will not allow vehicle to stop. Intermittent issue, but caused vehicle to hit gate. Same situation occurred later that same week and vehicle almost rolled through major highway crossing.

The pump in the power-assist brakes puts out less vacuum power than needed, increasing stopping distance and the risk of a crash. My car rolls and doesn't stop. I have new brakes so this is unacceptable!!

I have a 2017 Yukon. There is a recall on this model already for a vacuum pump that decreases the power brake assist. My vehicle is having this exact issue. The back tire sounds like the compressor is always running and when braking it grinds at the pedal like a vibration and doesn’t want to stop immediately. I need my vehicle added to the recall list so I can get it repaired.

Stabilitrak warning light comes on intermittently. Cruise or anti-lock brakes do not work when this condition is present

1.)Rear Brakes are not functioning properly. They still have pads but when you press down to pump the brake it fails. I was told by a mechanic that they other GMC vehicles have had recalls on this, but mine is not showing one. 2.)The suspension on this vehicle has never worked properly. It rides extremely rough. It has some special suspension in it from a shock perspective, but it feels as if it often fails. 3.) I had to replace the torque converter in this vehicle last year, and the fluid that runs through it. Apparently this is a known issue with no recall. 4.) the transmission slips when the vehicle shifts gears. It shifts hard. Also a known issue with no recall.

Driving down the highway and brake pedal became hard to push down almost causing us to wreck. Keep seeing there was a recall for the brake vacuum pump and also brake assist warning came on. Also when driving low speed like in parking lot it takes a while for vehicle to come to a complete stop

Tail Brake Light failure The tail brake lights have gone out on a vehicle that isn't 10 years old yet. Tail lights should not go out this quickly and the dealership will kindly replace them at $1300 per tail light. This is absolutely absurd! It is available for inspection. This definitely puts myself and others at risk! Yes, this problem has been confirmed and inspected by a GMC dealer. Advised this is a very common problem with this vehicle. There are no warning lamps or messages to alert when the brake lights have gone out. Instrument Cluster failure The instrument cluster is also faulty in this truck. This is the 2nd time within a year that i have had issues with this. Safety concern is that you will not know if the vehicle is running hot because the gauges stop working. Also runs the battery down as the fan continues to run for about 10 minutes after the vehicle is turned off. Yes, the problem has been confirmed and inspected by a dealer. Advised that this is a very common problem with this vehicle. No, there are no warning lamps or messages to alert you of the problem. You just notice a different noise while driving, the gauges stop working and then when you turn it off, the fan continues to run.

AFTER A 7 HOUR DRIVE ON FREEWAY BRAKES FAILED TO STOP VEHICLE. I HAD TO HAVE IT TOWED TO REPAIR SHOP FOR A COMPLETE BRAKE JOB FOR $1800.00. VEHICLE SEEMED TO BE FIXED SO DROVE IT BACK HOME ANOTHER 7 HOURS AND THE EXACT SOME PROBLEM HAPPENED AGAIN WHILE PARKING IN MY GARAGE.

I purchased a 2017 GMC Yukon Denali brand new off the showroom floor. I have maintained the services thru GMC dealership. I had to replace the struts and rear and front shocks due to hydraulic system leaking and locking up my brakes and causing extra pressure on my braking system to stop my vehicle. This cost me over $5000 to replace out of my pocket and I saw there was a previous recall in 2019 for similar problem but i was told my issues were not covered under the recall. I have also had to replace both taillights within 2years of purchasing my brand new vehicle and now they are out again. This will be my second time having to replace the LED tail lights that cost over $375 light which were stated as never go out of lifetime guarantee. You cannot just replace the bulb you have to replace the whole tail light which takes weeks to come in and then additional labor costs. The previous

Presently my air conditioner in my 2017 Yukon Denali has went out around 55 thousand miles approximately .We called to make appointments many times & after several attempts finally my car was early one morning & left until about 4:30;no one called to tell my husband not myself that their machine was not working.So no I’m order to wait for another appt !Today June 27th they are finally checking my air conditioner.I received a call saying this would be 1200.00 dollars!I bought this car with 23 miles on it and 6 MONTHS AFTER I DROVE IT I TOLD MY HUSBAND SOMETHING DI NOT SOUND RIGHT NOR FEEL RIGHT .We tried to make Many appts for 3 years UNTIL GMC FINALLY ADMITTED THERE WAS A RECALL!!Im furious.My vechile would cut off in the middle of a main Hwy with my 9 year old with me.Automatic brake will stop me at 55 mph ;for no reason .Windows down sound like you are in a wind tunnel !!Sun roof leak .Middle console latch just stopped working .ENGINE PROBLEM STILL NOT FIXED & UNDER LEMON LAW AFTER 3 attempts,& with all the lies many GMC LOCAL DEALERS HAVE TOLD ME DUE TO JUST NOT WANTING TO ADMITT THE TRUTH.I feel unbelievably frustrated.

Low speed breaking failure.

-Back brake light system failure. -Safety of a rearend accident compromised when tail light does not work properly. -Yes, a repair shop confirmed the $975 unit needs to be replaced and is on back order for one month putting our safety at risk. -No warning has appeared. A person behind me reported it to me.

Brake light not working.

Water in 3rd brake light

2017 GMC Yukon Denali 4WD. Rear passenger brake light intermittently fails while driving Confusing and causing motorists behind my vehicle to receive inconsistent intermittent brake warning lights to alarm other motorists I have stopped. Someone is going to end up slamming into me because of this. It’s a dangerous common failure that needs to be address ASAP. I’m not waiting but GM’s executive corporate office will get the entire bill plus time lost and another BBB review.

BRAKE LIGHTS INTERMITTENTLY WORK. WILL COME ON SOMETIMES AND THEN GO OUT. THIS HAPPENS WHEN THE CAR IS STILL AND WHILE MOVING.

Mileage: 62,000

DRIVER SIDE REAR BRAKE LIGHT ISN'T WORKING ANYMORE. 46K MILES ON A 2017 GMC YUKON.

Mileage: 46,000

BRAKE LIGHT FAILURE. BRAKE LIGHTS WORK INCONSISTENTLY. CHANGING THE BULB DOES NOT FIX THE PROBLEM. THIS IS AN ELECTRICAL ISSUE THAT HAS BEEN REPORTED BY NUMEROUS OWNERS. THIS IS A SAFETY HAZARD AS THE COMPONENTS HAVE TO BE REPAIRED BY A TECHNICIAN WHICH CAUSES HUNDREDS OF DOLLARS, PER LIGHT. THIS IS A DEFECTIVE PRODUCT THAT SHOULD BE RECALLED!!!

Mileage: 75,000

BOTH BRAKE LIGHTS STOPPED WORKING AT THE SAME TIME. THERE IS NO FUSE. ONLINE REPORTS SHOW MANY PEOPLE WITH THE SAME VERY DANGEROUS, HUGE SAFETY ISSUE OF THEIR BRAKE LIGHTS FAILING. THE CAR 3 YEARS 2 MONTHS OLD.

THE BRAKES STOP WORKING. BRAKE ASSIST COMES ON. WHEN I PRESS THE BRAKES YOU CAN FEEL THE PUMP IS NOT WORKING AT ALL. THIS IS HAPPENING AT SLOW SPEEDS MOSTLY IN PARKING LOTS BUT IN FEAR OF IT HAPPENING WHEN GOING FASTER. THIS NEEDS TO BE FIXED ASAP- DANGEROUS TO DRIVE MY CHILDREN AROUND IN A CAR WHERE THE BRAKES JUST STOP WORKING.

Mileage: 42,000

IRREGULARITIES WHEN BRAKE IS PUSHED AT LOW SPEEDS. CAN FEEL VARIOUS ISSUES SUCH AS VIBRATING BRAKE PEDAL, STUTTERING NOISE, LOSS IN PRESSURE OF BRAKES AND NEEDING EXCESSIVE PRESSURE ON BRAKES TO STOP VEHICLE. THIS HAS HAPPENED 2-3 TIMES NOW, ONCE IN A PARKING LOT, IN A DRIVE THRU AND WHEN PULLING OUT/IN THE GARAGE.

Mileage: 76,000

DRIVER SIDE REAR TAIL/BRAKE LIGHT GOES OUT WHEN OPEN AND CLOSE REAR HATCH. PASSENGER SIDE REAR HAS SAME ISSUE WHICH WAS RECALLED AND REPAIRED. TAP THE REAR QUARTER PANEL OR HIT A BUMP TAIL LIGHT WILL TURN OFF OR ON.

Mileage: 55,500

WHILE PULLING INTO A PARKING SPACE, THE BRAKES SHUTTERED AND THEY WOULDN'T HARDLY WORK. ALMOST COULDN'T GET THE VEHICLE STOPPED. A WARNING ON MY DASH SAID "SERVICE BRAKE ASSIST." THERE WAS A RECALL ISSUED IN CANADA BUT NON HERE FOR MY VEHICLE SO FAR. THIS IS A DANGEROUS SAFETY HAZARD THAT NEEDS TO BE FIXED. GMC NEEDS TO ESTABLISH A RECALL AS SOON AS POSSIBLE.

Mileage: 38,000

AFTER SENDING MY SUV FOR THE BRAKE RECALL(THE BRAKES ACTUALLY FAILED WHILE I WAS DRIVING) LAST MONTH, MY BRAKES FAILED AGAIN WHILE DRIVING OUT OF MY DRIVEWAY, ON WEDNESDAY 8/19 -ON MY WAY TO WORK.. I DROVE STRAIGHT TO THE DEALERSHIP. BASICALLY HAVING TO HARD PUSH THE BRAKES ON CITY STREETS STOP LIGHTS ETC. SCARY. YESTERDAY, 8/20 THEY TOLD ME THE CAR WAS FIXED. ON MY WAY TO THE DEALERSHIP 30 MIN AWAY, THEY TELL ME AFTER DRIVING THE VEHICLE, THAT BRAKE INDICATION CAME ON THE SCREEN AND THEY WILL NEED TO KEEP IT FOR MY SAFETY. AS OF NOW NO WORD ON IT BEING CORRECTED, AND QUITE HONESTLY NOT FEELING SAFE ABOUT DIVING THE CAR.

Mileage: 24,000

TL* THE CONTACT OWNS A 2017 GMC YUKON. THE CONTACT RECEIVED THREE DIFFERENT LETTERS FROM THE MANUFACTURER. THE LETTER SENT IN APRIL OF 2019 STATED THAT THEY WERE EXTENDING THE WARRANTY COVERAGE. THE LETTER SENT IN SEPTEMBER OF 2019 MENTIONED NHTSA CAMPAIGN NUMBER: 19V645000 (SERVICE BRAKES, HYDRAULIC). THE THIRD LETTER SENT IN NOVEMBER OF 2019 INDICATED THAT THE ISSUE WAS NOT A RECALL AND THEY WERE EXTENDING THE WARRANTY AGAIN. THE VEHICLE WAS TAKEN TO WINEGARDNER GMC BUICK OF PRINCE FREDERICK (935 SOLOMONS ISLAND RD N, PRINCE FREDERICK, MD 20678, (443) 295-6182) WHERE THE EBCM MODULE WAS REPROGRAMMED ONLY FOR THE HYDRAULIC SYSTEM. THE VACUUM PUMP SYSTEM WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED, BUT HAD NOT RESPONDED BACK TO THE CONTACT'S INQUIRIES. THE CONTACT HAD NOT EXPERIENCED A FAILURE.

WAS IN SCHOOL CAR LINE, WENT TO MOVE FORWARD A LITTLE AND BRAKES DIDNT WORK PROPERLY. ALMOST HIT THE CAR IN FRONT OF ME. GO STRAIGHT TO A DEALERSHIP WHERE THEY TELL ME ABOUT THE RECALL. SCHEDULE THE FIX, THIS MORNING WHEN I LEFT THE DEALERSHIP I DISCOVER THE RECALL DIDNT FIX MY ISSUE. LEARN THAT I NEED A VACCUUM PUMP REPLACEMENT. I AM UPSET THAT I AM SUPPOSE TO PAY $500 FOR A FAULTY VACCUUM PUMP AND RISK MY LIFE, THE KIDS LIVES AND PEOPLE'S LIVE AROUND ME UNTIL I CAN AFFORD THIS REPAIR WHEN IT IS FAULTY IN THE FIRST PLACE.

Mileage: 71,000

TL* THE CONTACT OWNS A 2017 GMC YUKON. WHILE THE CONTACT'S HUSBAND WAS PARKING THE VEHICLE, THE BRAKE PEDAL HAD TO BE DEPRESSED TO THE FLOORBOARD TO MAKE A COMPLETE STOP. ALSO, THE SERVICE BRAKE ASSIST WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS TAKEN TO BLAKE FULENWIDER DODGE (LOCATED AT 1310 E MAIN ST, EASTLAND, TX 76448, (254) 488-429) WHERE IT WAS SERVICED PER NHTSA CAMPAIGN NUMBER: 19V645000 (SERVICE BRAKES, HYDRAULIC) ON OCTOBER 18, 2019. AFTER THE CONTACT LEFT THE DEALER, AND WHILE DEPRESSING THE BRAKE PEDAL, THE CONTACT HEARD AN ABNORMAL NOISE COMING FROM THE BRAKES AND THE VEHICLE JERKED FORWARD. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 50,700. THE VIN WAS NOT AVAILABLE.

Mileage: 50,700

TL* THE CONTACT OWNS A 2017 GMC YUKON. WHILE DRIVING 14 MPH, THE BRAKE PEDAL WAS DEPRESSED, BUT THE VEHICLE FAILED TO STOP AND THE BRAKE ASSIST AND CHECK ENGINE WARNING INDICATORS ILLUMINATED. AS A RESULT, THE CONTACT CRASHED INTO ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO STATED THAT A MODE FOR THE BRAKES WAS SWITCHED. THE VEHICLE WAS REPAIRED. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 27,698.

Mileage: 27,698

WHEN DRIVING OCCASIONALLY YOU HAVE TO PUSH REALLY HARD ON THE BRAKES TO STOP. 9/10 TIMES BRAKES WORK NORMAL BUT ONCE IN A WHILE YOU HAVE TO PRESS VERY HARD TO STOP. WAS PULLING INTO MY DRIVEWAY AT A VERY LOW SPEED BRAKES WERE HARD TO PRESS AND RAN INTO THE WALL OF THE GARAGE. BROUGHT TO THE DEALER NUMEROUS TIMES SINCE I BOUGHT IT BRAND NEW AND STILL NOT FIXED.

Mileage: 12,000

LOW SPEED BREAK FAILURE. IN MY DRIVEWAY, IN PARKINGLOTS, USUALLY AFTER HAVING FOOT ON BREAK TO "ROLL" AND THEN STOP AGAIN, NO BREAKS, OR HAVE TO PUT TWO FEET DOWN TO STOP. I HIT A CAR IN FRONT OF ME TWO DAYS AGO AFTER WAITING AT A RED LIGHT, STARTING TO ROLL BECAUSE THEY ROLLED, THEN THEY STOPPED, AND I HIT THE BREAK AND NOTHING HAPPENED. MY HUSBAND HAS TAKEN THE CAR MULTIPLE TIMES TO BE LOOKED AT FOR THE BREAKS NOT WORKING FOR AT LEAST 6 MONTHS.

Mileage: 62,000

HAVE NO BRAKES AT LOW SPEED DUE TO FAULTY VACUUM PUMP

Mileage: 46,000

MY HUSBAND AND I WERE DRIVING ON THE HIGHWAY AT 70 MPH WHEN HE NEEDED TO SLOW DOWN AND NOTICED THE BRAKES ON THE YUKON WERE NOT FUNCTIONING PROPERLY. MORE SPECIFICALLY, THE BRAKES WOULD NOT FUNCTION THE FIRST 3-4 TIMES WHEN THEY WERE APPLIED OR TAPPED, BUT THEREAFTER THE BRAKES WOULD BECOME HARD AND HE HAD TO DEPRESS THE BRAKE PEDAL AS HARD AS HE COULD BUT WITH LITTLE TO NO STOPPING ABILITY. THE 'BRAKE ASSIST' LIGHT CAME ON. HAD WE BEEN IN ANY TRAFFIC OR ON A SHORTER ROAD, WE WOULD HAVE SURELY CRASHED INTO SOMEONE AND IT COULD HAVE BEEN CATASTROPHIC CONSIDERING WE LIVE IN DALLAS WHERE THERE IS A LOT OF TRAFFIC. THIS DAY WE WERE VERY LUCKY! GM HAD ISSUED A SERVICE BULLETIN #PIT5361B WHICH AFFECTED MULTIPLE YEARS AND CLASSES OF VEHICLES TO INCLUDE THE 2015 YUKON. GM ACKNOWLEDGED THAT 'A CUSTOMER MAY COMMENT ON A HARD BRAKE PEDAL OR THAT INCREASED EFFORT IS NEEDED TO DEPRESS THE BRAKE PEDAL.' AS EVIDENCE OF THE DEFECT, GM NOTIFIED ITS DEALERS, 'WHILE PERFORMING NORMAL DIAGNOSTICS, FLUID MAY BE FOUND IN THE BRAKE BOOSTER AND/OR THE BOOSTER VACUUM LINE.' HOWEVER, WE CALLED MULTIPLE DEALERSHIPS WITHIN THE DFW AREA AND THEY ALL DENIED KNOWING ANY ISSUE WITH GM BRAKES FAILING OR THE VACUUM PUMP. INTERESTINGLY, THERE IS A CLASS ACTION LAWSUIT ON THIS VERY ISSUE AND GM ALSO ISSUED A SERIES OF SERVICE BULLETINS TO ITS DEALERS REGARDING THE BRAKE DEFECT, WITH THE LATEST BULLETIN DATED MARCH 15, 2017, TO INCLUDE THE 2015-2016 YUKON. OURS IS JUST A 2017, 1 YEAR OUTSIDE OF THAT. WHO IS TO SAY THIS YEAR ISN'T AFFECTED CONSIDERING PAST HISTORY OF THE BULLETINS. IT WAS THANKSGIVING HOLIDAY AND NO DEALERSHIP COULD EVEN GET TO IT BESIDES NOT KNOWING OF ANY 'ISSUE', EVEN THOUGH IT'S ALL OVER THE INTERNET.

Mileage: 63,690

WHILE COMING TO TRAFFIC LIGHTS TO MAKE A STOP THE VEHICLE'S BRAKE PEDAL BEGINS TO GET HARDER AND HARDER TO PRESS WHILE LOSING THE ABILITY TO STOP THE VEHICLE. WHILE ENTERING PARKING SPACES THE BRAKE PEDAL WILL GET EXTREMELY HARD AND LOSE ALMOST ALL STOPPING POWER. THIS HAPPENED A NUMBER OF TIMES IN ONE DAY RESULTING IN A NEAR REAR-ENDING OF ANOTHER VEHICLE AS WELL AS HITTING A CURB WHICH STOPPED US FROM ENTERING THE FRONT WINDOW OF A RETAIL ESTABLISHMENT.

Mileage: 42,360