2015 GMC Yukon Denali Powertrain (other) Problems

The contact owns a 2015 GMC Yukon Denali. The contact stated that while driving at undisclosed speeds, the contact heard an abnormal grinding sound, and the transmission was shifting hard. While making a turn, there was an abnormal sound coming from the vehicle. There were unknown warning lights illuminated. The contact stated that the failure was related to NHTSA Campaign Number: 14V152000 (Power Train). The vehicle was taken to an independent mechanic, who informed the contact that the failure was due to the transmission. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 100,000. The VIN was not available.

NHTSA ID

11622331

Incident

Jan 14, 2021

Mileage

100,000 mi

The contact owns a 2015 GMC Yukon Denali. The contact stated that while driving at an undisclosed speed, the transmission was inoperable. The contact stated that when the gear shifter was shifted into reverse, the vehicle would drive forward. The contact also stated that when the gear shifter was in neutral, the vehicle would reverse instead. The vehicle was driven to the residence. The contact stated that the transmission fluid had leaked onto the ground. The vehicle was towed to an independent mechanic where it was diagnosed with a failed transmission. The contact was informed that the transmission needed to be replaced. The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. The failure mileage was approximately 102,000.

NHTSA ID

11572365

Incident

Feb 15, 2024

Mileage

102,000 mi

VEHICLE CLUNKS OR HARD SHIFT WHILE SHIFTING VEHICLE FROM PARK TO DRIVE, OR PARK TO REVERSE. HAPPENS EVERY MORNING OR WHILE TRANSMISSION HAS COOLED DOWN. DEALER INDICATES THERE'S NO FIX FOR THIS CONDITION, NOT EVEN A UPDATE TO TRANSMISSION SOFTWARE.

NHTSA ID

11130274

Incident

Aug 8, 2018

Mileage

20 mi

I GIVE!!! NOW BREAK LIGHTS NOT WORKING!!! RIGHT BREAK LIGHT IS OUT AND LEFT DRIVER IS INTERMITTENT. VEHICLE HAS 37K ON IT AND WAS JUST PICKED UP FROM THE DEALER AFTER HAVING 1 OF MANY ISSUES THROUGH THE PAST YEAR RECTIFIED AND NOW THIS! THIS IS A SIGNIFICANT SAFETY HAZARD AND COULD TREMENDOUSLY INJURE SOMEONE. RIGHT NOW MY CAR CANNOT EVEN PASS INSPECTION DUE TO THE FAULTY EQUIPMENT INSTALLED BY THE MANUFACTURE THAT IS A DANGER TO MY SAFETY. I HAVE OWNED MANY GMC'S (6 TOTAL) THROUGH THE YEARS AND THIS BEING THE WORST!! THE LATEST, I HAVE HAD THE TORQUE CONVERTER REPLACED IN AUG 18 - DUE TO SHUDDERING AND VIBRATION. THEN THE STEERING COLUMN REPLACED DUE TO POPPING , BACK HATCH HINGE REPLACED DUE TO POPPING AND MALFUNCTION, BACK GLASS DOOR RUBBER GASKET REPLACED DUE TO LEAKING, SHARKFIN ANTENNA REPLACED DUE TO LEAKING, SUNROOF GASKET REPLACED DUE TO LEAKING, NEW TIRES AT 500 MILES DUE TO EXCESSIVE VIBRATION. BACK DOOR ADJUSTED DUE TO SLAMMING, AND ADDITIONAL SLIGHT ISSUES. THE RADIO HAS A CONSTANT GLITCH ON THE SCREEN SINCE DAY ONE THAT AFTER BEING TAKEN IN NUMEROUS TIMES, OF COURSE THE DEALER CANNOT REPLICATE THE PROBLEM AND KEEPS PERFORMING A FLASH UPDATE WHICH NEVER HELPS AND AS SOON AS I DRIVE OFF IT GLITCHES AGAIN. I HAVE CONTACTED GM REGARDING THE BRAKE LIGHTS, RADIO, AND NOW MY PASSENGER STEP IS MALFUNCTIONING NOT TO MENTION A RECALL WAS JUST RELEASED ON THE POWER STEERING. WILL THE REPAIRS EVER END? GUESS ONCE I TRADE IT IN ON ANOTHER MANUFACTURE AS THIS WILL MOST LIKELY BE THE LAST GMC I WILL EVER PURCHASE!! I DO NOT HAVE TIME TO LIVE MY LIFE AT THE DEALER FOR A HIGH END PURCHASE THAT IS THE WORST MISTAKE EVER!! NOT TO MENTION BEING A SAFETY HAZARD!!!

NHTSA ID

11130057

Incident

Sep 14, 2018

I WAS RECENTLY IN AN ACCIDENT AT A STOPLIGHT. WHEN I ARRIVED AT THE STOPLIGHT SOMETHING FELL OUT OF PASSENGER SEAT ONTO FLOOR. I PUT THE TRUCK IN PARK, TOOK OFF MY SEATBELT, LEANED OVER TO PICK UP ITEM AND PUT IT BACK ON THE SEAT. I THEN PUT SEATBELT BACK ON AND PUT FOOT ON BRAKE AND PUT THE TRUCK INTO DRIVE. IT ALL HAPPENED PRETTY QUICKLY AND CAN'T SWEAR TO THE SPECIFICS BUT I THINK THE TRUCK MAY HAVE "JUMPED" A LITTLE WHEN I PUT THE TRUCK INTO DRIVE AND PROPELLED ME INTO THE CAR IN FRONT OF ME AT A VERY LOW SPEED. THE REASON WHY I BELIEVE THIS HAPPENED IS THAT I HAD PREVIOUSLY ASKED THE LOCAL GMC DEALER SERVICE CENTER IF THERE WERE ANY RECALLS OR OTHER REPORTS ON THIS TYPE OF THING HAPPENING BECAUSE IT HAPPENS WITH MY TRUCK. I HAD BEEN EXPERIENCING THIS "ENGINE JUMPING" UPON PUTTING IT INTO DRIVE ISSUE FOR SEVERAL MONTHS.

NHTSA ID

11023490

Incident

Jul 12, 2017

Mileage

55,000 mi

WHEN SHIFTING INTO GEAR FROM A CHILD START, THE VEHICLE TAKES APPROXIMATELY 3 SECONDS TO SHIFT. DURING THAT TIME THE VEHICLE IS NOT IN GEAR AND CAN ROLL IN ANY DIRECTION. THERE IS A SOFTWARE FIX FOR THIS THAT I MUST PAY THE DEALER TO INSTALL. THIS HAPPENS EVERY COLD START.

NHTSA ID

11000313

Incident

May 20, 2017

Mileage

56,000 mi

VEHICLE DRIVE TRAIN OPERATES ERRATICALLY IN VARIOUS OPERATING SITUATIONS AND HAS EXTENSIVE VIBRATIONS BETWEEN 25-40MPH; VIBRATIONS ARE WORSE IN CERTAIN GEARS. SIGNIFICANT LUNGEING AND JERKING OF SHIFTING GEARS ON ACCELERATION, PARTICULARLY WHEN NOT ACCELERATING INTENSELY. VEHICLE MAKES A CLUNK/KNOCK SOUND WHEN DECELERATING RAPEDLY. TAKEN IN FOR SERVICE 2X AT 2 DIFFERENT GMC DEALERS. TRANSMISSION HAS BEEN REPROGRAMMED 1X. NITHER DEALER PROVIDED GMC TECHNICAL SERVICE BULLETIN "#99-04-20-002I: INFORMATION ON DRIVE TRAIN CLUNK NOISE - (NOV 18, 2014)" AFTER MY VEHICLE WAS TAKEN ON AN UNAUTHERIZED 30 MILE 'TEST DRIVE' I WAS TOLD 'IT'S NORMAL OPERATION' AND "CUSTOMER CONCERN NOT DUPLICATED AT THIS TIME". SIMPLY FIND THIS HARD TO BELIEVE AS THE OPERATIONS AS DESCRIBED ARE BEING ACKNOWLEDGED BY A GMC BULLETIN. THIS IS SERIOUS: (1) THE SUDDEN JERKING/SLAMMING OF GEARS WILL HAVE A LONG TERM EFFECT ON THE TRANSMISSION (2) THE ACCELERATION ON DOWNSHIFTING IS A HUGE LIABILITY AS THE INCREASED POSSIBILITY OF COLLISION IS SIGNIFICANT AND (3) DIFFINETLY NOT 'NORMAL' OPERATION.

NHTSA ID

10971782

Incident

Apr 4, 2017

IN MOTION VEHICLE SHUTTERS, CLUNKING IN BETWEEN GEARS, CLUNKS GOING INTO REVERSE, SHUTTERS BETWEEN 30-40 MPH AND OVER 65 MPH. BOUGHT VEHICLE BRAND NEW OFF SHOW ROOM FLOOR, VEHICLE WAS OUT OF ALIGNMENT WHEN I PURCHASED IT. AROUND 12,000 MILES NOTICED IT WAS SHUTTERING AND AS TIME HAS CONTINUED IT HAS PROGRESSIVELY GOTTEN WORSE. AT 17,000 MILES 11/16 TORQUE CONVERTOR WENT OUT AND WAS REPLACED. 1/17 BACK IN SHOP NOW WITH SAME PROBLEMS BUT MUCH WORSE.

NHTSA ID

10947079

Incident

Jan 1, 2015

Mileage

15,000 mi