What 977 owners told NHTSA about the 2015 GMC Yukon Denali Xl 1500

BRAKE LIGHTS FOR PASSENGER REAR LAMP ASSEMBLY IS NOT WORKING. THIS IS THE SECOND TIME WITHIN 25 MONTHS THAT THIS HAS HAPPENED. THE ENTIRE LAMP ASSEMBLY NEEDS TO BE REPLACED AT A COST OF $600+. THE VEHICLE HAS LESS THAN 49,000 MILES, AND IT IS NO LONGER COVERED UNDER WARRANTY. ONLINE FORUMS INDICATE THAT THIS IS A COMMON PROBLEM WITH THE BRAKE LIGHTS IN THE LAMP ASSEMBLIES. IT APPEARS THE CIRCUIT BOARDS FOR THE LED BRAKE LIGHTS ARE BREAKING.

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THE PASSENGER SIDE BRAKE LIGHT DOES NOT WORK. I REPLACED THE LIGHT ASSEMBLY AND IT STILL DOES NOT WORK. THE DEALERSHIP MECHANIC SAID IT COYLD BE TGE WIRING.

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THE LED REAR BRAKE LIGHTS AREN'T WORKING.

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2015 GMC YUKON SLE. CONSUMER WRITES IN REGARDS TO PRESSURE BOOMING SENSATION WHILE DRIVING VEHICLE. *LD *TR

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FAULTY BACK TAIL LIGHTS. THE ENTIRE ASSEMBLY FAILS WITH THE BACK BRAKE LIGHTS BEING OUT DUE TO FAULTY SOLDIERING AND PART. MAJOR SAFETY HAZARD. GM WILL NOT REPLACE.

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THE TAIL LIGHTS ARE FAULTY. THIS IS THE SECOND TIME I'VE HAD AN LED TAIL LIGHT GO OUT. SECTIONS OF THE LIGHTS COME ON AND OFF. ONE TAIL LIGHT ASSEMBLY HAS BEEN REPLACED ALREADY. THEY ALSO GET CONDENSATION ON THE INTERIOR OF THE ASSEMBLY. THIS APPEARS TO BE A COMMON THEME FOR A TAIL LIGHTS ON GM SUV'S FROM 2015-2018. THESE LIGHTS CAN BE PURCHASED FOR ANYWHERE BETWEEN $400. TO $900 RANGE FOR JUST ONE! THEY ARE ON A VEHICLE WHICH HAS A BASE PRICE OF OVER $50K AND LAST LESS THAN TWO YEARS! COME ON!

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LED BRAKE LIGHTS FAILED IN BOTH TAIL LAMPS. LED IS SUPPOSED TO BE A LONGER LASTING ALTERNATIVE TO STANDARD LIGHTS. UNFORTUNATELY THE WAY GM DESIGNED THESE YOU CANNOT SERVICE OR REPAIR THEM LIKE YOU CAN WITH A TRADITIONAL BULB. AFTER MUCH RESEARCH IT APPEARS THAT THERE IS A THIN STRIP THAT BREAKS IN THE CIRCUIT CAUSING BOTH TAILLAMPS TO LOOSE FUNCTIONALITY, THERE IS NO BULB OUT WARNING SO THE DRIVER IS NOT ALERTED. AND WITH NO BRAKE LAMPS THIS COULD RESULT IN A CRASH OR INJURY.

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PASSENGER SIDE REAR BRAKE LIGHT WAS WORKING INTERMITTENTLY AND NOW HAS STOPPED WORKING ALL TOGETHER. THE BRAKE LIGHT UNIT IS A SEALED UNIT THAT CAN NOT BE SERVICED, IT MUST BE REPLACED ENTIRELY. VERY COMMON PROBLEM ON THIS MODEL DUE TO A FAULTY BRAKE LIGHT ASSEMBLY. FAILURE OF BRAKE LIGHTS PUTS THE SAFETY OF MY FAMILY IN JEOPARDY.

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TAIL AND BRAKE LIGHTS FAILED. UPON INSPECTION IT WAS FOUND THAT THE CONDUCTIVE PLATE BETWEEN THE LEDS HAD CRACKED/BROKEN IN BOTH ASSEMBLIES.

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AC CONDENSER LEAKING AT 72000 MILES, SO OUTSIDE OF WARRANTY. SHOULD BE COVERED REGARDLESS OF MILEAGE DUE TO A KNOWN ISSUE IN SPECIAL PROGRAM 17336. BOUGHT THIS CERTIFIED FROM DEALER IN 2017. AC JUST STOPPED COOLING A COUPLE OF WEEKS AGO, JUST BLOWS WARM AIR. IMPACTS DEFROSTING.

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ENGINE SHUTS OFF, STEERING ASSIST DISAPPEARS AND STEERING WHEEL IS JERKED OUT OF MY HAND, STABILITRAK WARNINGS ON DASH, HVAC SCREEN GOES BLANK, CHIMES START GOING OFF. THIS OCCURRED AS I WAS PULLING INTO A PARKING LOT AND I ALMOST HIT ANOTHER CAR. THE VEHICLE WAS MOVING AT NO MORE THAN 10MPH.

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I LOST BRAKES. EXTREME PRESSURE ON PEDDLE REQUIRED FOR BRAKES TO ENGAGE. EVEN THEN ONLY REDUCED BRAKING POWER WAS AVAILABLE. REQUIRED REPLACEMENT OF VACUUM PUMP AND BOOSTER. OCCURRED WHEN VEHICLE ENGINE WAS AT IDLE. OTHERWISE BRAKES FELT WEEK BUT AVAILABLE.

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FAULTY, POORLY MADE TAIL LIGHTS THAT NEED TO BE ENTIRELY REPLACED (NOT JUST THE BULB) AT MORE THAN $700 EACH. WHEN SPENDING SO MUCH ON A CAR, THIS IS LITERALLY INSANE NOT TO BE COVERED UNDER ANY WARRANTY. GMC DRIVERS DESERVE MORE THAN THIS POORLY MADE LED LIGHT SYSTEM. THE PLASTIC WINDOW TRIM PIECES ALSO DETACH DUE TO CHEAP PLASTIC CLIPS. I'VE HAD TO LITERALLY USE DOUBLE SIDED TAPE AND GLUE TO STICK THEM BACK ON A $70K+ CAR. IT'S HUNDREDS OF DOLLARS TO REPLACE PIECES THAT ARE LITERALLY PART OF THE BODY OF THE VEHICLE.

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THE BRAKE LIGHTS HAVE GONE OUT WITH ONLY 42000 MILES ON IT. I HAVE READ ON MESSAGE BOARDS ACROSS THE NATION THIS IS A MAJOR PROBLEM. DEALER WANTS 800 TO FIX IT.

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EXTERIOR LIGHTING ISSUES. REAR RUNNING LIGHTS NOT WORKING. REAR BREAK LIGHTS ARE NOT WORKING. RIGHT SIDE BLINKER NOT WORKING IN FRONT HEAD LAMP OR REAR LIGHTING FIXTURE. WHEN THE VEHICLE IS HOOKED TO THE COMPUTER AT A GM DEALERSHIP THE COMPUTER WILL NOT SHOW WHAT THE ISSUE IS. THIS IS A SAFETY ISSUE AS I CAN NOT SAFETY DRIVE THE VEHICLE AT NIGHT DUE TO NO LIGHTS IN THE REAR OF THE VEHICLE NOR DURING THE DAY WITHOUT BREAK LIGHTS.

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LEFT BRAKE LIGHT WORKING INTERMITTENTLY AND THEN WENT OUT COMPLETELY. RIGHT BRAKE LIGHT FOLLOWED IMMEDIATELY AFTER. DEALER WANTS 1550.00 TO REPLACE

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BRAKE PEDAL IS STIFF AT LOW SPEEDS. THE PEDAL LOCKS UP AND STOPPING IS DELAYED 2 TO 3 FEET. IT MAKES OPERATING THE VEHICLE UNSAFE. I HAVE DONE RESEARCH ON THIS ISSUE. OTHERS ARE EXPERIENCING THE SAME DANGEROUS DELAYED STOPPING DISTANCE AND STIFF BRAKE PEDAL AT LOW SPEEDS.

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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.

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ALL LED LIGHTS HAVE WENT OUT ON RIGHT SIDE, AS WELL AS BREAK LIGHTS. THIS IS A KNOW ISSUE TO GMC, AND YET THEY WILL NOT CORRECT IT. MY QUOTE TO HAVE IT FIXED WAS 2493.00 FROM LOCAL DEALERSHIP. THAT IS CRAZY. LED LIGHTS SHOULD LAST A WHOLE LOT LONGER THAN THIS. ALSO CONDENSATION IS IN THE FRONT HEADLIGHT WITH NO HOLES OR CRACKS. IF THIS HAPPENS WITH HOUSE WINDOWS, THEY ARE REPLACED BY THE MANUFACTURER. THERE ARE SO MANY COMPLAINTS, I WILL ALSO BE CONTACTING THE BETTER BUSINESS BUREAU. GMC KNOWS THERE IS A PROBLEM WITH THESE MODELS.

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MY REAR TAIL LIGHT WENT OUT 1 MONTH AFTER WARRANTY ENDED. THIS HAPPENS TO ALL MANY AUTOS IN THIS CLASS. PLEASE DO SOMETHING OR I WILL STOP BUYING GMC AUTOS.

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OUR PASSENGER TAILLIGHT WENT OUT AND THE DEALERSHIP COST TO REPLACE IT WAS $811. I CALLED GMC CUSTOMER SERVICE AND AFTER 4 DAYS AND MULTIPLE PHONE CALLS THE BEST THEY COULD OFFER IN FINANCIAL ASSISTANCE WAS $80. I ASKED THE DEALERSHIP IF I COULD HAVE THE BROKEN LIGHT AND THEY WANTED ME TO PAY $50 TO TAKE IT WITH ME. A GOOGLE SEARCH TURNED UP MANY INSTANCES OF THIS HAPPENING. THE DEALERSHIP TOLD ME THAT THEY REPLACE 1-2 PER WEEK. THE TAILLIGHT REPLACEMENT ON THE YUKON FAMILY IS A SCAM. IT IS UNETHICAL FOR THEM TO CHARGE THAT MUCH FOR A REPLACEMENT WHEN IT IS INOWN TO BE DEFECTIVE. THE CAR IS LESS THAN 4 YEARS OLD AND HAS 66K MILES AND HAS NOT BEEN IN ANY COLLISIONS. JUST NORMAL ROUTINE USE RESULTED IN A COSTLY REPAIR AND, MORE IMPORTANTLY, IRRESPONSIBLE CUSTOMER SERVICE FROM THE GMC EMPLOYEES WHO WERE IN CHARGE OF HANDLING MY CASE.

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MY PASSENGER BRAKE LIGHT INTERMITTENTLY DOES NOT WORK. THIS IS CLEARLY A COMMON PROBLEM WITH THIS MAKE AND MODEL. HERE IS AN EXAMPLE OF ONE OF MANY FORUMS : HTTPS://WWW.CARGURUS.COM/CARS/DISCUSSION-T53845_DS768963 THIS IS A SAFETY PROBLEM AND GMC SHOULD OFFER A RECALL FOR THEIR FAULTY LED LIGHTS.

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TAILLIGHTS WORKS INCONSISTENT NO BRAKE LIGHTS TOOK TO DEALER THEY SAID THE BOTH LIGHTS NEED TO BE REPLACED AND MY WARRANTY DOESN'T COVER IT THEY SAID THESE VEHICLES ARE KNOWN FOR HAVING THIS PROBLEM NEED FOR HELP WITH THIS

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THIS IS THE SECOND COMPLAINT THAT I HAVE MADE TO NHTSA. THE FIRST TIME, THE VEHICLE WAS SPONTANEOUSLY TURNING OFF AND SHUTTING DOWN DURING BACKING IN AND TURNS CAUSING A SAFETY ISSUE. THIS RESULTED IN A RECALL, AND A "SOFTWARE UPDATE" THAT WAS DONE TWICE TO CORRECT THE ISSUE. RIGHT AND BACK PASSENGER LIGHTS BEGAN TO BLINK ON AND OFF AND WATER GETS INTO THE BRAKE LIGHT. THE DEALER TOLD ME THIS WAS M ISSUE. THIS TIME THE 4WD SERVICE LIGHT CAME AND THE CAR APPEARED TO BE STUCK IN "4WD LOW" MAKING IT "DRAG" AT A REDUCED SPEED WHEN DRIVING. ALSO, THE "SERVICE TRAILER BRAKE" LIGHT CAME ON REPEATEDLY. I HAVE NEVER USED THE TRAILER BRAKE. I TOOK IT INTO AN AUTHORIZED DEALER, SELLERS GMC IN FARMINGTON HILLS, MI. THEY TOLD ME I NEEDED A NEW "MODULE", SO I PAID TO HAVE THAT DONE. WITHIN ONE DAY THE SAME SERVICE LIGHTS CAME ON AGAIN. "SERVICE 4 WD" AND "SERVICE TRAILER BRAKE." I IMMEDIATELY TOOK THE VEHICLE BACK AND AM NOW BEING TOLD IT NEEDS ANOTHER SOFTWARE UPDATE AND A NEW TRAILER BRAKE TRANSFER SWITCH. QUITE FRANKLY, I BELIEVE THAT THIS MODEL HAS SIGNIFICANT, UNADDRESSED COMPUTER SOFTWARE ISSUES AND THE DEALER DOES NOT KNOW WHO TO FIX IT. THE CAR IS UNSAFE BECAUSE IT SPONTANEOUSLY STOPS WORKING APPROPRIATELY DURING DRIVING. THE CONCERNS HAVE BEEN VARIOUS AND ALWAYS SEEM TO AFFECT STEERING, WHEN TURNING OR BACKING IN. I AM BEING CHARGED FOR VARIOUS CONTROL PANELS AND MODULES. I AM REQUESTING THAT THIS CONCERN GETS ADDRESSED BEFORE THERE IS A SERIOUS INJURY. I WOULD LIKE MY VEHICLE FIXED AND RETURNED TO A SAFE CONDITION. I WAS NEVER TOLD UPON PURCHASE, THAT THIS MODEL WOULD REQUIRE SO MANY "SOFTWARE" UPDATES TO REMAIN SAFE. THIS SHOULD NOT BE A BURDEN PLACED ON A CONSUMER FOR A VEHICLE TO OPERATE SAFELY. THIS IS DANGEROUS.

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FROM TIME TO TIME BRAKE PEDAL BECOMES HARD WHEN BACKING UP OR GOING FORWARD MAKING THE VEHICLE HARD TO COME INTO A COMPLETE STOP.

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