What 147 owners told NHTSA about the 2015 GMC Sierra 2500 Hd

The truck is a 2015 GMC Sierra 2500 HD. With less than 51,000 miles, the transmission is gone due to a design flaw. Around march 8th, the transmission went out when I hydroplanned on a two lane road. Haley GMC Airport was wanting $6700 for a new transmission. I contacted GMC and they offered a 15% discount after raising the price to over $7500. GMC has replaced and volunteered recall on their 2015 1500 and 2015 2500 8 speed transmissions but will not do anything about the 2015 2500 6 speed transmission. The transmission where I received a second opinion advised that they changed the transmission on the 2015 after realizing there was a design flaw. I feel that myself and many others whose transmissions died before 100,000 due to GMC design should not pay full price for a new transmission. If this is not the correct channel, please let me know. thank you.

NHTSA ODI 11581697

Shifting started to make a loud clunking sound. Then the vehicle wouldn't shift out of 3rd gear. The engine check light came on and the code determined it to be a faulty transmission control module (TCM). When looking at the TCM, I also noted that the TCM was very hot and the nearby cable cover had melted. When researching the issue, it was discovered that GMC Sierra 2500 and 3500, years 2009 - 2015 were having this same issue all over the continent. Resulting in a massive back order and leaving drivers stranded. There was no warning lights or sounds before my power train froze up.

NHTSA ODI 11546705

I am having a issue with a low milage GMC Sierra. The truck is a 2015 with 24,000 miles. When it was produced the truck had a 100,000 mile warranty but has since lasped in time. The transmission on this truck is a 6l90 which has had several know issues that gm is aware of. This service bulletin is just highlight of the issue gm bulletin 19-na-153. I've talked with several transmission shops and event saw a few posted online about the transmission issue, my issue is gm will not stand behind their product, I have contacted GM directly and gotten no where. During my conversation with the GM reps on the phone they did agree the transmission should not have blown at the milage. My truck is garage kept, doesn't go outside in the rain or snow. I know there is a class action for the Allison transmission and the 8 speed but not the 6 speed that I'm aware of.

NHTSA ODI 11523040

On November 14th, while commuting home from work, my transmission failed while I was stopped at a red light. After the light turned green, my car would not move when I pushed my foot on the gas. The engine would rev up but nothing would happen. I turned off the engine and re-started several times but the car would never move. I eventually gave up and turned over my emergency blinkers and started calling tow trucks. I was stuck in the center lane of a 4-lane road road at a very busy interstate interchange during rush hour. These were incredibly unsafe conditions as the location of my vehicle almost caused several accidents. It took over 3 hours for a tow truck to show up, move my vehicle from the busy road, and tow it to the local dealer. After investigating, the dealer said the transmission pump blew apart of sent metal throughout the transmission and caused it to be inoperable. There were no warning lamps, messages, or other symptoms prior to this occurrence.

NHTSA ODI 11496331

Wife and daughter took the pickup to town. While returning home wife noticed a noise from the front end. She slowed down to turn and the whole tire with rotor came off the pickup causing the brake line to get ripped off and stating a fire. Damaged the running board and rocker panel along with the cv axle and other numerous parts.

NHTSA ODI 11458567

SINCE DAY ONE WITH MY 2015 GMC 2500 THE TRANSMISSION HAS ACTED VERY WEIRD WHEN DRIVING. EVERY APPOINTMENT I HAVE MADE FOR SERVICE AT THE DEALER I HAVE COMPLAINED ABOUT THE SHUDDERING AND INCONSISTENT UPSHIFTING AND DOWNSHIFTING AND OF COURSE THE DEALER TELLS ME THAT THEY CANNOT FIND ANYTHING. NOW IT IS TO A POINT WHERE TRANSMISSION IS SHIFTING BUT THE TRUCK HAS NO POWER SOME OF THE TIME. I FEEL LIKE IT COMES AND GOES WEEKLY. I ALSO OWN A 2015 GMC 3500 THAT I BOUGHT AT THE SAME TIME BUT THAT TRUCK RESEMBLES NONE OF THESE SYMPTOMS.

NHTSA ODI 11351697

WHILE DRIVING ON DRY PAVEMENT, DRIVER MOVED KNOB ON VEHICLE TO SWITCH FROM AWD TO 2WD. VEHICLE WENT INTO AN IMMEDIATE SPIN WHICH COULD NOT BE CORRECTED. (OR MAYBE IT WAS BECAUSE OF WHAT HAPPENED NEXT). VEHICLE CAREENED OVER TWO LANES ("PRESUMABLY" WOULD NOT STOP - DRIVER DOES NOT RECALL TRYING TO HIT THE BRAKES REPEATEDLY OR AT ALL AS THE "NEXT PROBLEM" WAS IN FRONT OF DRIVER AND DRIVER WAS FOCUSING ON SURVIVAL).. DRIVER QUICKLY SMASHED THROUGH METAL SAFETY BARRIER AND CRASHED THROUGH TREES OVER A 30 FT EMBANKMENT INTO A RESERVOIR. DRIVER ABLE TO OPEN ROOF WHILE "STEERING" WITH LEFT HAND AND OPENING ROOF WITH RIGHT HAND AS DRIVER KNEW WATER WAS FAST APPROACHING. DRIVER SMASHED THROUGH TREES, TRUCK WAS DEMOLISHED BUT DRIVER WAS ABLE TO MAKE IT OUT OF CAR ALIVE AS CAR TOOK ON WATER THROUGH OPENED ROOF. VIN NUMBER REPORTS BRAKE ISSUES. DRIVER NOT AWARE OF "BRAKE RECALL" OR ANY ISSUES AND DID NOT REPORT BRAKE ISSUE AS AN ISSUE ON SCENE AS INCIDENT HAPPENED SO FAST AND DRIVER WAS ATTEMPTING TO STAY ALIVE AND WAS EVER FOCUSED ON THE NEXT 'OBSTACLE" AS IT WAS IN THE WAY PER DESCRIPTION HEREIN. AIRBAGS DEPLOYED AS EXPECTED AND DRIVER EXITED WATER-FILLED VEHICLE VIA OPENED ROOF UNHARMED. GMC SENT INVESTIGATORS OUT BUT NO REPORT HAS BEEN ISSUED TO DRIVER. CHUBB LEAD INVESTIGATOR ACCOMPANIED THE GMC INVESTIGATOR AND REPORTED "NO VEHICLE MALFUNCTION". AFTER THIS INCIDENT, AND READING OTHERS' PROBLEMS, DRIVER IS NOW NOT CONVINCED OF THAT REPORT.. NO MENTION OF BRAKE RECALL SEEMS TO HAVE BEEN REPORTED BY ANYONE BUT BY PUTTING VIN NUMBER INTO THIS DATABASE.

NHTSA ODI 10906090

DRIVING NORTH ON THE GARDEN STATE PARKWAY IN THE CENTER LANE IT FELT LIKE I HAD A BACK TIRE BLOWOUT BUT WHAT HAPPENED WAS MY REAR AXLE BROKE CAUSING MY VEHICLE TO BE EXTREMELY HARD TO CONTROL. I WAS TRYING TO STEER THE VEHICLE BUT COULD NOT CONTROL THE TRUCK, IT FELT LIKE I HAD LIMITED BRAKING ABILITY, SMASHING INTO GUARDRAIL IT FINALLY CAME TO A STOP.

NHTSA ODI 10839187

TRANSMISSION CONTROL MODULE FAILURE; THE TRUCK AT 45 MPH DEVELOPED A COMPLETE LOSS OF ALL GAUGES(TACH, SPEED, FUEL, TEMP) AND THEN 10-15 SECONDS LATER TWO LOUD NOISES FOLLOWED BY THE VEHICLE COMING TO A RAPID DECELERATION. THIS RESULTED IN THE WHEELS LOCKING UP AND SLIDING SIDEWISE. THE TRUCK ROLLED UP ON TO ITS LEFT TWO WHEELS AND THEN SLAMMED DOWN. IF THIS OCCURRED AT 75MPH ON THE HIGHWAY, THE TRUCK WOULD HAVE ROLLED. THE TRUCK HAS BEEN AT A GMC DEALERSHIP SINCE THEN. GMC HAS NO DATE OF IF OR WHEN THIS TRUCK CAN BE REPAIRED. THE "TCM" IS DEFECTIVE. IT WAS ON A CITY STREET, 45 MPH ZONE GOING STRAIGHT DOWN A GENTLE GRADE.

NHTSA ODI 10824369

TL* 2015 GMC SIERRA. WHILE THE VEHICLE WAS PARKED, IT BEGAN TO COAST BACKWARDS AND COLLIDED INTO THE SIDE OF A BUILDING WITHOUT WARNING. THE AIR BAGS DID NOT DEPLOY. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. AFTER THE CRASH, THE GEAR SHIFTER REMAINED IN PARK. THE VEHICLE WAS NOT DIAGNOSED, BUT WAS CURRENTLY BEING REPAIRED FOR DAMAGES SUSTAINED FROM THE CRASH. THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 14V374000 (POWER TRAIN). THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 8,000. THE CONSUMER WHO WROTE IN, WORKS AT THE CAR WASH. AN EMPLOYEE AT THE CAR WASH, DROVE THE VEHICLE OUT OF THE CAR WASH AND PLACE THE VEHICLE IN PARK TO HAVE THE DETAIL WORK COMPLETED. THE VEHICLE WAS LEFT WHILE ANOTHER VEHICLE WAS RETRIEVED FROM THE CONVEYOR BELT. THE GMC ROLLED BACK AND CRASHED INTO THE CAR WASH BUILDING. APPARENTLY, THE EMPLOYEE THOUGHT THE VEHICLE WAS IN PARK, WHEN IT WAS IN FACT IN NEUTRAL.

NHTSA ODI 10767492

VEHICLE RANDOMLY AND REPEATEDLY SHIFTS INTO NEUTRAL FROM DRIVE, WITOUT ANY INPUT FROM DRIVER, DURING NORMAL DRIVING CONDITIONS. VEHICLE RANDOMLY AND REPEATEDLY LOSES ACCELERATOR PEDAL CONTROL AND FUNCTIONALITY DURING NORMAL DRIVING CONDITIONS.

NHTSA ODI 10766547

TL* THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE TRANSMISSION VIBRATED CAUSING A HESITATION WHEN THE GEARS SHIFTED. THE CONTACT MENTIONED THAT THE FAILURE WAS MOST SEVERE WHILE DRIVING AT SPEEDS BETWEEN 40-50 MPH. THE VEHICLE WAS TAKEN TO A DEALER WHO CHANGED THE GEAR RATIO AND ADJUSTED THE REAR END. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 250.

NHTSA ODI 10747035

2015 GMC SIERRA 6-SPEED AUTOMATIC TRANSMISSION FAILURE @ 1800 MILES. AS I WAS DECELERATING FROM APPROXIMATELY 30 MPH TO MAKE A TURN INTO A ROAD THE TRANSMISSION DOWNSHIFTED AS EXPECTED TO LOW GEAR. AS I ACCELERATED THE TRANSMISSION SHIFTED TO 2ND NORMALLY. AT THIS POINT THE TRANSMISSION SHOULD HAVE SHIFTED INTO 3RD GEAR BUT THE TACHOMETER JUMPED TO 3000RPM BEFORE I REALIZED THAT THE TRANSMISSION HAD SHIFTED INTO WHAT SEEMED LIKE NEUTRAL. THIS LEFT ME BLOCKING TRAFFIC WITH A TRUCK THAT WOULD NOT GO OVER 20 MPH. WHEN I SLOWED SUFFICIENTLY THE TRANSMISSION WOULD PICK UP 2ND GEAR AGAIN. BEING CLOSE TO HOME I WAS ABLE TO LIMP HOME. WHEN I REACHED HOME I PAST MY DRIVEWAY AND WENT TO BACK IN AS I USUALLY DO. THE TRANSMISSION WOULD NOT PICK UP REVERSE! BY THIS TIME A CHECK ENGINE LIGHT CAME ON. I THEN HAD TO DRIVE ABOUT A MILE DOWN THE ROAD TO FIND A PLACE TO MAKE A U TURN SO I COULD PULL IT INTO MY DRIVEWAY. THE TRUCK WAS TOWED TO THE DEALERSHIP WHERE A MECHANIC EXPERIENCED THE SAME PROBLEM ON A TEST DRIVE. (HE HAD TO PUSH THE TRUCK BACKWARDS BY HAND TO BE ABLE TO RETURN TO THE SHOP.) CURRENTLY THE TRANSMISSION HAS BEEN REMOVED FROM MY BRAND NEW TRUCK PENDING INVESTIGATION. IT HAS ONLY TO GEARS 1ST AND 2ND. THIS IS A SERIOUS FAILURE THAT COULD HAVE HAPPENED WHILE MERGING INTO TRAFFIC ON THE INTERSTATE. LUCKILY I WAS ON A BACK ROAD IN THE MIDDLE OF WINTER! *TR

NHTSA ODI 10693290

TL*THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DESCENDING DOWN HILL AT NIGHT, THE LOW BEAM HEAD LIGHT PROVIDED POOR VISIBILITY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 5. UPDATED 03/30/15*LJ UPDATED 06/23/2015*JS

NHTSA ODI 10690231

I BOUGHT A BRAND NEW GMC IN SAN DIEGO CA. I TOOK IT HOME TO DISCOVER THAT THE UNDERCARRIAGE IS COVER IN RUST. EVERYTHING FROM THE TIE RODS, TO THE DRIVE SHAFT. ANYTHING METAL IS COVERED IN RUST INCLUDING THE FRAME. ITS NOT A SURFACE RUST,THE RUST IS CORRODING THESE PARTS ALREADY AND THE TRUCK IS BRAND NEW. HOW COULD THIS BE SOLD AS A BRAND NEW TRUCK? THIS IS A SAFETY ISSUE AS WELL. WE DO NOT HAVE SNOW HERE THAT WOULD HAVE SPRAYED SALT ON HE TRUCK TO DO THIS. THIS TRUCK HAS BEEN CORRODING FOR SOME TIME NOW EVEN THO THEY SAID IT WAS JUST BUILT. RUST DOESN'T GO AWAY ONLY GETS WORSE AND A BRAND NEW TRUCK SHOULDN'T BE COVER IN IT. I'M VERY CONCERNED WITH THE SAFETY OF THIS TRUCK. *TR

NHTSA ODI 10672713