2015 GMC YUKON DENALI XL Complaints

PASSENGER SIDE LED BRAKE LIGHT DOES NOT WORK WHEN BRAKING. ASSEMBLY HAS BEEN REMOVED AND SWITCHED WITH DRIVER SIDE TO VERIFY THAT IT IS NOT THE WIRING HARNESS OR ANY ELECTRICAL BETWEEN THE BRAKES AND THE LED BRAKE LIGHTS.

REPLACED BOTH FRONT STRUTS AT AROUND 91,000 MILES. DEALER SAID STRUTS HAD "LOCKED UP". DEALER REPLACED STRUTS ON FEBRUARY 19, 2018 AT A COST OF $1,818.66. LED BRAKE LIGHTS QUIT WORKING. NOT SURE OF EXACT DATE WHEN THE BRAKE LIGHTS QUIT WORKING.

VEHICLE STARTED HAVING A VIBRATION AT CRUISING SPEEDS AFTER 100K MILES. DEALERSHIP STATES THE DRIVESHAFT IS WHARPED AND NEEDS REPLACING.. REAR TAILLIGHTS ALSO ARE GOING IN AND OUT INTERMITTENTLY. DEALER CLAIMS THE LEDS ARE BAD AND THE WHOLE LIGHT ASSEMBLY NEEDS REPLACING. I HAVE OWNED MANY VEHICLES AND HAVE NEVER HAD ISSUES WITH A BENT DRIVESHAFT OR DEFECTIVE TAILLIGHTS THAT REQUIRE THE WHOLE ASSEMBLY TO BE REPLACED. THE LIGHT ASSEMBLY IS $750 QUOTED BY DEALERSHIP.

THE TAIL LIGHTS ON BOTH SIDES ARE LED LIGHTS. THEY ARE WORKING INTERMITTENTLY. ONE SIDE WILL SOMETIMES COME BACK ON IF I BUMP IT WITH MY HAND. MY VEHICLE HAD LESS THAN 50,000 MILES ON IT WHEN THIS STARTED OCCURRING BUT WAS OUT OF WARRANTY. I HAVE BEEN TOLD THAT IT WILL COST APPROXIMATELY $1500 TO FIX. I HAVE ALSO BEEN TOLD BY THE DEALER THAT THIS IS A COMMEN PROBLEM WITH THE 2015 MODEL. I FEEL THAT THIS IS AN EXTREME SAFETY ISSUE AND SHOULD BE REPLACED BY GM THROUGH A RECALL. BECAUSE THE LIGHTS WORK INTERMITTENTLY, IT IS OBVIOUSLY A SHORT OR DEFECT OF SOME KIND.

AT 44K MILES ON THE VEHICLE, NOTICED THAT THE LEFT REAR BRAKE LIGHTS (LEDS) WERE NOT ILLUMINATING WHEN THE BRAKE WAS APPLIED, AT REST OR WHILE DRIVING. THIS INCLUDES BOTH THE TAIL LIGHTS AND BRAKE LIGHTS. PHYSICALLY TAPPING ON THE HOUSING LIGHTS THEM UP TEMPORARILY, BUT IT DOES NOT STAY LIT. DEALER WANTS OVER 700 DOLLARS TO REPLACE THE ENTIRE ASSEMBLY. DOING RESEARCH ONLINE SHOWS MANY MANY OTHER OWNERS WITH THESE LED TAIL LIGHT ASSEMBLYS WITH THE EXACT SAME ISSUE. THE PART IS DEFECTIVE, IN THAT THE CIRCUIT INSIDE THE ASSEMBLE BRAKES, AND THE LIGHTS WILL NOT LIGHT UP. THE LED BULBS THEMSELVES STILL WOULD WORK, IF THE CIRCUIT TO THEM WAS NOT DEFECTIVE. SOMEONE NEEDS TO STEP UP AND CALL OUT THE MANUFACTURE ON THIS ONE. ITS A MANUFACTURER DEFECT, NOT BAD BULBS! PLEASE HELP. HERE IS ONE FORUM THAT HAS MANY PEOPLE TALKING ABOUT IT. HTTPS://WWW.CARGURUS.COM/CARS/DISCUSSION-T53845_DS768963

RIGHT SIDE TAIL LIGHT IS NOT WORKING TRANSMISSION IS CLUNKS WHEN SELECTING DRIVE FROM REVERSE. WHEN ROLLING SLOW IN A PARKING LOT, SOMETIMES THE TRANSMISSION HAS A VERY HARSH CLUNK AS IF SOMEONE HAS HIT ME IN THE REAREND. THE STEERING COLUMN HAS A POPPING NOISE WHEN TURNING LEFT.

MY GMC YUKON XL VIBRATES BADLY AT ALL SPEEDS BUT INTENSIFIES AT SPEEDS BETWEEN 40-55. THE VIBRATION CAN BE FELT THROUGH THE WHOLE FRAME OF THE CAR. THE CABIN CREATES A THROBBIING SOUND, LIKE A HELICOPTER INSIDE THE CAR. THE STEERING WHEEL VIBRATES. THE CAR CONSUMES OIL AT AN ALARMING RATE WITH NO VISIBLE LEAKS OR NOTICABLE EXHAUST. THE CAR SURGES UNEXPECTEDLY SOMETHINES AROUND CORNERS OR BACKING OUT OF PARKING SPOTS. AND THE REAR "CLUNKS" WHEN ACCELERATING FROM A SLOW SPEED SUCH AS ONTO A HIGHWAY ENTRANCE RAMP. THE REARVIEW CAMERA A IS TOTALLY WORTHELSS IN LOW LIGHT LEVELS AND CANNOT BE USED FOR SAFE BACK UP OPERATIONS. DEALER HAS HAD THE CAR FOR OVER 50 DAYS AND HAS REPLACED THE TRANSMISSION, REPLACED THE TORQUE CONVERTER, HAS REPLACED THE STRUTS AND SHOCKS AND HAS CHANGED FLUISD AS PER GM INSTRUCTION. IN ALL THIS TIME AND OVER 6 VISITS, THEY CANNOT FIX AND HAVE TOLD ME THAT GM HAS SAID THIS IS THE "NEW NORMAL". IF THIS IS NORMAL, WHY DID THEY SPEND SO MUCH TO TRY AND FIX SOMETHIG THAT WAS NOT WRONG? THE DEALER ALSO TOLD ME THAT THE REAR VIEW CAMERA WILL NOT WORK PROPERLY BECUASE OF ALL OF THE FACTORY OPTIONS ON THE CAR AND THAT DEGRADES THE QUOALITY OF THE IMAGE. GM HAS NOT CONTACTED ME ALTHOUGH I HAVE REQUESTED THROUGH THE DEALER THAT THEY DO SO. I SEE THIS IS A COMMON PROBLEM WITH GMC CARS OF THIS YEARS MODEL. I WOUL DLIKE TO SEE ACTION TAKEN AGAINST GMC TO CORRECT THIS OR MAKE ME WHOLE.

WHILE IN MOTION MY VEHICLE SHUTS COMPLETELY OFF. THIS IS IN THE MIDDLE OF TRAFFIC AT TIMES. IT DISPLAYS WARNINGS THAT STABILITRACK HAS BEEN DISABLED AND SHUITS DOWN EVERYTHING ELECTRICAL. AT SOME POINTS IT DOESNT SHUT COMPLETELY DOWN, BUT INSTEAD HESITATES AND THEN PICKS BACK UP. THIS HAPPENS IN VARIOUS SITUATIONS WHETHER IT BE ON THE HIGHWAY, TURNING, OR DRIVING CITY ROADS.

LED BRAKE LIGHT ALREADY BURNT OUT AND ONLY 2 YEARS OLD. OVER $600 TO FIX A LIGHT THAT IS SUPPOSE TO HAVE A UNLIMITED LIFE....

ACTIVE FUEL MANAGEMENT SYSTEM IN 2015 GMC YUKON DENALI XL-- ENGINE WAS RUNNING IN TRAFFIC AND STALLED OUT AT INTERSECTION MAKING A TURN. DEALERSHIP DIAGNOSED AS BENT PUSH ROD, BROKEN VALVE SPRING, BROKEN LIFTER. THIS HAS BEEN LINKED TO FAULTY ACTIVE FUEL MANAGEMENT SYSTEM WITH GMC ENGINES. THERE IS AN ACTIVE SERVICE BULLETIN FROM GM CONCERNING THIS PROBLEM. UNDER EXISTING POWERTRAIN WARRANTY, GM AGREES TO FIX THE BROKEN ENGINE COMPONENTS, BUT WILL NOT ADDRESS THE UNDERLYING ROOT CAUSE OF THE PROBLEM, THE AFM SYSTEM. THE GM CUSTOMER SERVICE REP STATED THAT IT IS NOT GM'S CURRENT POLICY TO ADDRESS THE AFM SYSTEM EVEN THOUGH IT IS A KNOWN PROBLEM. THE DEALERSHIP SERVICE DEPARTMENT AGREES THIS IS THE PROBLEM. DOCUMENTATION ONLINE FROM OTHER CONSUMERS VALIDATES THAT THIS IS A WIDESPREAD ISSUE. IT IS A SAFETY CONCERN BECAUSE UNLESS THE AFM SYSTEM IS ADDRESSED, THERE IS A RISK THE ENGINE WILL FAIL IN TRAFFIC. I FEEL LIKE GM IS UNWILLING TO ADDRESS THIS ISSUES BECAUSE THERE IS NO EASY, CHEAP FIX AND THE PROBLEM IS SO WIDESPREAD IN ITS VEHICLES WITH AFM SYSTEMS. IT IS A POTENTIAL PUBLIC TRAFFIC SAFETY CONCERN AS THESE ENGINES AGE.