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

RAW FUEL FUMES INSIDE THE CAB AND OUTSIDE THE VEHICLE. AFTER LOOKING UNDER THE VEHICLE THERE IS A SLOW BUT STEADY FUEL LEAK FROM THE GAS TANK. I BELIEVE IT IS THE PLASTIC FUEL LINE THAT HAS WORN A HOLE IN ITSELF FROM RUBBING ON ANOTHER OBJECT.

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TL* THE CONTACT OWNS A 2015 GMC YUKON. THE CONTACT STATED THAT WHILE DRIVING AT NIGHT, THE REAR TAIL LIGHTS FAILED TO ILLUMINATE. THE VEHICLE WAS TAKEN TO CRESTVIEW CADILLAC LOCATED AT 2700 E. GARVEY AVE S, WEST COVINA, CA 91791, (626) 966-7441, TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE REAR TAILLIGHT ASSEMBLIES NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS INFORMED OF FAILURE. THE CONTACT WAS INFORMED THAT THE VEHICLE EXCEEDED THE MILEAGE LIMIT TO HAVE THE REPAIRS COMPLETED. THE FAILURE MILEAGE WAS 71,468.

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HAVING ISSUES WITH THE TAIL LIGHTS EVER SINCE I GOT THE VEHICLE. FIRST IT WAS ONE LIGHT COMPLETELY OUT. THEN IT WORKED FOR AWHILE, AND NOW BOTH LIGHTS ARE INTERMITTENTLY WORKING. THE SIDE YELLOW LIGHTS WORK ON BOTH BUT THE RUNNING LIGHTS AND THE BRAKE LIGHTS ALL DONT WORK ALMOST ALL OF THE TIME. UPON READING UP ON THE INTERNET, MANY MANY SITES AS WELL AS LOCAL PEOPLE WITH THE SAME VEHICLE, ALL STATE THEY HAVE THE EXACT SAME ISSUE WITH THEIR TAIL LIGHTS. IT SEEMS TO BE A VERY COMMON ISSUE WITH THE SAME PIECES FAULTING IN ALL OF THESE YUKONS. DOESN'T MATTER IF VEHICLE IS STOPPED OR MOVING THEY HARDLY EVER WORK.

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OUR 2015 YUKON XL DENALI CAUGHT FIRE IN THE ENGINE COMPARTMENT WHILE WAITING AT STOP LIGHT ON SAT, WITH MY WIFE AND CHILDREN INSIDE. IT WAS A HOT DAY, OVER 95 DEGREES, AND WE WERE TURNING LEFT ACROSS TRAFFIC WHEN WE REALIZED THE SMELL AND SMOKE WAS COMING FROM OUR VEHICLE. SMOKE WHIFFED FROM UNDER THE HOOD AND NOXIOUS FUMES FILLED THE PASSENGER COMPARTMENT, SCARING ME AND MY FAMILY. WE FINISHED THE TURN AND IMMEDIATELY PULLED OVER, SHUTOFF THE TRUCK, AND ALL ESCAPED FEARING IT WOULD BURST INTO FLAMES. WHATEVER WAS BURNING APPEARED TO STOP ONCE THE IGNITION WAS OFF. I OPENED THE DRIVER DOOR, POPPED AND RAISED THE HOOD TO LOOK FOR THE PROBLEM. I COULD SEE THAT A BELT, BEHIND THE SERPENTINE BELT, HAD SNAPPED, AND THERE WAS CHARRED DEBRIS ON THE EXPOSED MECHANICAL PULLEY FOR THE AC COMPRESSOR. AFTER FURTHER INSPECTION, I RESTARTED THE TRUCK WITH THE AC OFF, AND MONITORED FOR SMOKE. THE TRUCK SEEMED OK TO DRIVE HOME , SO WE DID WITHOUT AC ON A 95 DEGREE DAY. ON MONDAY WE DROVE THE TRUCK TO A TRUSTED MECHANIC FOR INSPECTION. THEY DIAGNOSED THE COMPRESSOR SEIZED AND ESTIMATED REPAIRS WERE $1,240. THE TRUCK IS GARAGED KEPT, AND GENTLY USED WITH ONLY 37,500 MILES. WE PURCHASED THE GMC CERTIFIED TRUCK IN JULY 2018 FROM A DEALER. I CREATED AN ACCOUNT ON GMC.COM & LOOKED THROUGH WARRANTY COVERAGE. A SPECIAL COVERAGE HAD BEEN EXTENDED FOR AC DEFECTS, BUT IT LAPSED IN MARCH, 2020. LOOKING FURTHER; MANY THOUSANDS OF GM OWNERS HAD SAME PROBLEM FROM SAME DEFECTIVE AC CONDENSER COMBI-COOLER. I CALLED GM TO COMPLAIN THEY NEVER TOLD US OF ABOUT A DEFECTIVE AC SYSTEM. THEY SAID ONLY A GM DEALER COULD DIAGNOSE THE PROBLEM, BECAUSE THEY ARE 'EXPERTS'. THAT SAME 'EXPERT' DEALER HAD SERVICED OUR YUKON 4 TIMES OVER THE PAST 2 YEARS AND NEVER ONCE SHARED THE INFORMATION ABOUT THE DEFECTIVE AC SYSTEM. GM & DEALER COLLUDED TO ALLOW WARRANTY TO EXPIRE.

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I HAVE A 2015 GMC YUKON XL DENALI. TRUCK WAS PURCHASED FROM GMC CERTIFIED DEALER IN JULY 2018, WITH 16,000 MILES. THE TRUCK IS GARAGED KEPT, AND GENTLY USED WITH ONLY 37,500 MILES. WHEN SOMETIMES DRIVING AT LOW SPEEDS, THE TRANSMISSION WILL SOMETIMES SLIP (AKA STUDDER). WHEN STARTING (ENGINE IS COLD) AND SHIFTING INTO D, SOMETIMES THE TRANSMISSION SHIFTS HARD, OR SLAMS INTO 1ST GEAR. THAT CAN'T POSSIBLY BE GOOD FOR THE TRANSMISSION. OCCASIONALLY THE TRANSMISSION WILL SHIFT HARD BETWEEN GEARS AT MODERATE SPEED. I HAVE JUST LEARNED THERE ARE SERVICE BULLETINS GOING BACK TO 2016 REGARDING COMPLAINTS FOR THE NEWLY DEVELOPED 8-SPEED M5U/8L90 AUTOMATIC TRANSMISSION. THE LOCAL GMC DEALER HAS SERVICED THE TRUCK 4 TIMES IN PAST 2 YEARS AND NEVER BOTHERED TO ASK ABOUT THE SYMPTOMS OF TRANSMISSION PROBLEMS. OR ALERT ME TO THE DEFECTIVE TRANSMISSION. GM & DEALER COLLUDED TO WITHOUT PERTINENT INFORMATION FROM ME TO CAUSE THE ORIGINAL MANUFACTURER WARRANTY TO EXPIRE, FORCING REPAIRS EXPENSE TO BE OUT-OF-POCKET ON THE CONSUMER. DEALER CHARGED ME $300 TO SWAP THE DRAIN AND FLUSH THE TRANSMISSION FLUID AND SWITCH TO ANOTHER TYPE. IF THE DEALER HAD ALERTED ME TO THE ISSUE ON 1 OF THE 4 PREVIOUS SERVICE VISITS, THE SERVICE WOULD HAVE BEEN COVERED UNDER WARRANTY. BUT NOW THAT THE TRUCK IS 3 MONTHS OUT OF WARRANTY, I HAVE TO PAY OUT OF POCKET. GM AND THE DEALER HAVE KNOWN ABOUT THE ISSUE FOR YEARS, AND DID NOTHING.

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I CAN TURN THE STEERING WHEEL SIDE TO SIDE AND THE CAR DIES POWER GOES LOW AIR CONDITIONING FANS BLOW LESS AND GET WARNINGS ON DASH TO ROLL DOWN DRIVERS WINDOW AND THEN BACK UP

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THIS 2015 YUKON SLT HAS 2 FAILED REAR TAILLIGHTS AND BRAKE LIGHTS. THERE IS NO INDICATION OF THIS FAILURE IN THE INSTRUMENT PANEL. MY WIFE WAS ADVISED BY TEXT FROM A FRIEND THESE LIGHTS WERE OUT. THE REPLACEMENT ASSEMBLY IS APPX $500.00 PER SIDE PLUS INSTALLATION. I WAS ADVISED THIS IS NOT A WARRANTY ITEM AND IT IS ALSO A COMMON FAILURE ON THESE VEHICLES. NOT SURE WHEN THE FAILURE OCCURRED. THE 3RD RAISED LIGHT WAS OPERATIONAL WHEN THE BRAKES WERE USED. FIRST NOTICED AROUND JULY 10, 2020. I HAVE SEVERAL CARS FROM 2002 ON WHICH WARN OF A LIGHT FAILURE. THESE LED LIGHTS WERE ADVERTISED TO LAST FOR EXTENDED PERIODS. THIS ISSUE IS DANGEROUS AND UACCEPTABLE.

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MY TRUCK HAS 30,000 MILES AND HAS THE 'CHEVY SHUDDER'. WHY IS THIS NOT A RECALL? GMC WANTS ME TO PAY OUT OF POCKET FOR THE TRANSMISSION FLUSH. WHEN I AM DRIVING THE TRUCK IT BEGINS SHUDDERING AND SHAKING THROUGH CERTAIN SHIFT POINTS.

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MAJOR SAFETY ISSUES WITH THIS VEHICLE. ANOTHER 2015 YUKON WITH NO TAIL OR STOP LIGHTS. I'M OVER MILLAGE ON SPECIAL RECALL. THERE SHOULD BE NO TIME/MILLAGE ISSUE ON THIS. SEAT BELTS LOCK UP. BRAKES ARE EITHER GOOD OR MUSSY WHENEVER THEY WANT TO BE. HARD TO STOP THE VEHICLE. ALSO WHEN I FIRST PURCHASED THE VEHICLE IT WOULD COMPLETELY DIE (NO LIGHTS MOTOR DIED, NO POWER STEERING, NO AIR BAGS, NO RADIO NOTHING AT ALL ON THE X-WAY AT 70 MPH) AND THE DEALER COULD NOT REPAIR IT! RUST ON FRAME RAILS. (AND MORE).

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TL* THE CONTACT OWNS A 2015 GMC YUKON. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE BECAME UNSTABLE WHILE DRIVING OVER BUMPS IN THE ROADWAY. THE VEHICLE WAS TAKEN TO STATEN ISLAND GMC LOCATED AT 1855 HYLAN BLVD, STATEN ISLAND, NY 10305 WHO DIAGNOSED THAT THE SET OF SHOCK ABSORBERS WERE DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 45,000. Consumer stated besides having a few recalls that were resolved consumer have had a lifter & pushrod problem in 2018 that was under warranty! The vehicle was at the dealership for 22 days! Since then consumer had to replace 4 shock absorbers at a cost of over 3 thousand dollars, consumer had transmission problems, tail light problems & air conditioning problems! Consumer had same problem with the lifters & push rods at 64 thousand miles dealership can’t take the vehicle till March 1st.

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THE REAR PASSENGER & DRIVER SIDE BRAKE LIGHTS JUST RANDOMLY STOPPED WORKING. NOT A BULB ISSUE AS IT IS THE LED PANEL OF LIGHTS. THE BACK-UP BULB STILL WORKS, BUT THE LED BRAKE LIGHTS DON'T. LED LIGHTS SHOULD LAST YEARS. DEALERSHIP SAYS IT HAPPENS A LOT TO THESE VEHICLES, AND I HAVE TO BUY A WHOLE NEW UNIT FOR EACH SIDE. THIS IS A HUGE SAFETY ISSUE - BREAK LIGHTS FAILING DUE TO POOR WIRING. AGAIN NOT A REPLACEABLE BULB ISSUE, IT IS DUE TO A WIRING ISSUE WITHIN THE LED LIGHTING UNIT ITSELF.

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MY PASSENGER SIDE TAIL LIGHT ASSEMBLY NEED TO BE REPLACED AS THE BRAKE LIGHTS ARE NOT WORKING. THIS HAS BECOME A COMMON PROBLEM AS EVIDENCED BY THE NUMBER OF COMPLAINTS FILED ON YOUR SITE FOR THE SAME ISSUE. LACK OF PROPERLY FUNCTIONING TAIL LIGHTS IS A MAJOR SAFETY CONCERN AND A RECALL SHOULD BE ISSUED. *TR

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POWER STEERING LOST MOMENTARILY AFTER OPERATING FOR 45 MINUTES AND RETURNING WHEN VEHICLE IS SHUT OFF FOR 10 MINUTES.

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I BOUGHT MY GMC YUKON IN MARCH OF 2019 ABOUT A WEEK LATER I HAD PEOPLE INFORM ME MY BRAKE LIGHTS WERE NOT WORKING. I WOULD CHECK AT NIGHT AND THEY WOULD. A FEW MONTHS LATER I NOTICED IT MYSELF, THEY WOULD WORK ONE MINUTE BUT NOT THE NEXT. DECEMBER OF 2019 I GET A LETTER FROM GMC STATING THEY KNOW 2015 MODEL GMC YUKON VEHICLES MAY HAVE A CONDITION WHERE THE BRAKE LIGHTS INTERMITTENTLY DO NOT ILLUMINATE. I COULD HAVE IT DONE IF MY SUV WAS NOT OVER 72K MILES BUT IT WAS WHEN I BOUGHT IT. SO THAT DOESN'T HELP ME AND THEY WANT $2K TO FIX IT. I CALLED TO SEE WHAT THEY COULD DO AND THEY TOLD ME THIS WASN'T A SAFETY ISSUE. IF THEY DO WORK AND SOMEONE DOESN'T SEE I AM BRAKING, MY KIDS OR FAMILY ARE IN THE BACK SEAT, HOW IS THAT NOT SAFETY RELATED? THEY NEED TO MAKE THIS A RECALL! *TR

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LIFTER ISSUES CAUSING ENGINE DAMAGE AT 80,000 MILES. *TR

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MY YUKON HAS A LEAKING RADIATOR WHICH IS A KNOWN DEFECT NOT JUST IN YUKONS, BUT ALSO IN TAHOES, SILVERADOS, SUBURBANS AND OTHER VEHICLES. GM REFUSES TO COVER THE REPAIR FOR ALL TRUCKS, ONLY CERTAIN ONES. I'M NOT SURE WHAT THE CRITERIA THEY ARE USING IS...BUT IT IS THE SAME DEFECT AFFECTING ALL OF THE VEHICLES. *TR

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MAGNETIC RIDE CONTROL ISSUE POSSIBLY. WHILE TRAVELING DOWN ROAD, HIGHWAY OR SIDE STREET, VEHICLE RIDES EXTREMELY ROUGH AND BOUNCES. *TR

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BOTH TAILLIGHTS INTERMITTENTLY STOP WORKING. *TR

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TL* THE CONTACT OWNS A 2015 GMC YUKON. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, THE VEHICLE HESITATED AND STOPPED INDEPENDENTLY. THE CONTACT STATED THAT THE REDUCED POWER WARNING LIGHT WAS ILLUMINATED. THE CONTACT PULLED OVER, TURNED OFF AND RESTARTED THE VEHICLE AND THE VEHICLE OPERATED AS INTENDED. THE VEHICLE WAS TAKEN TO HENRY BROWN BUICK GMC LOCATED AT 1550 E. DRIVERS WAY, GILBERT, AZ 85297, (480) 835-0900, TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS 119,000.

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MANUFACTURE DEFECTIVE , FRONT DRIVER SIDE HEADLIGHT ASSEMBLY HAS HIGH CONDENSATION WHICH CONTINUES TO GET WORSE. IT HAS CAUSED THE LIGHT TO MALFUNCTION AND NOW WILL NOT WORK. I WAS TOLD BY A MECHANIC THAT THE WHOLE HEADLIGHT ASSEMBLY HAS TO BE REPLACED BECAUSE IF NOT THE BULBS WILL CONTINUE TO BURN OUT DUE TO THE CONDENSATION. *TR

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THE REAR TAIL LIGHT KEEPS GOING OUT. IT WAS ALREADY REPLACED ONCE AT MY DEALERSHIP. NOW THE SAME LIGHT LESS THAN 3 YEARS IS NOT FUNCTIONING. POSING A SAFETY CONCERN AS OTHER VEHICLES WOULD NOT SEE ME AT A COMPLETE STOP DUE TO MY REAR PASSENGER LIGHT NOT WORKING. THIS SHOULD BE A SAFETY RECALL. ITS A VERY COMMON THIS IS A MANUFACTURING DEFECT AND GMC SHOULD HAVE THIS FIXED ASAP. TRIED CALLING GMC AND THEY SAID THEY WOULD NOT HELP ME WITH THE REPAIR COST OF MY REAR PASSENGER TAIL LIGHT. I STATED THIS WAS A SAFETY ISSUE AND REQUIRED THEIR ATTENTION. TO NO AVAIL I WAS DENIED ANY ASSISTANCE. THE LIGHT ITSELF AT MY DEALERSHIP IS $800 NOT INCLUDING LABOR. THIS IS MY EVERY DAY FAMILY DRIVER CAR. I HAVE BEEN STOPPED BY COPS AND GIVEN WARNINGS AND BY OTHER PASSER BY'S THAT MY BRAKE LIGHT IS NOT FUNCTIONING SAFELY AND APPROPRIATELY. THIS NEEDS TO BE ESCALATED TO A SAFETY RECALL. AS THERE ARE MANY THREADS WITH OTHER GMC YUKON OWNERS HAVING THE SAME ISSUES. THANK YOU. *TR

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RIGHT REAR BRAKE LIGHT LED KEEPS WORKING OFF AND ON. THIS IS A COMMON PROBLEM, LOOK AT THE OTHER COMPLAINTS, AND COSTS THE CUSTOMER AROUND $700 TO FIX. THE LED STRIP BREAKS INTERNALLY AND THIS IS THE CAUSE OF THE ISSUE.

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RIGHT REAR TAIL LIGHT AND BRAKE LIGHT STOPPED WORKING. IT IS AN LED LIGHT AND VERY EXPENSIVE. THIS IS A SAFETY CONCERN AS LACK OF A BRAKE LIGHT ON ONE SIDE IS IN VIOLATION OF LEGAL REQUIREMENTS. LED LIGHTS SHOULD NOT QUIT FUNCTIONING AFTER 5 YEARS AND 85,000 MILES. *TR

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TL* THE CONTACT OWNS A 2015 GMC YUKON XL. THE CONTACT STATED THAT WHILE DEPRESSING THE BRAKE PEDAL THE REAR BRAKE TAILLIGHTS FAILED TO ILLUMINATE. THE VEHICLE WAS TAKEN TO KEWEENAW BUICK GMC LOCATED AT 608 QUINCY ST, HANCOCK, MI 49930, TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE REAR BRAKE LIGHTS WERE DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE, BUT PROVIDED NO ASSISTANCE. THE FAILURE MILEAGE WAS 102,000.

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REAR TAIL LIGHT CIRCUIT BOARDS BREAKING AND CAUSING BRAKE LIGHTS OR TAIL LIGHTS TO FAIL OR NOT WORK. *TR

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