2015 GMC Sierra 2500 Complaints

UNKNOWN OR OTHER — Filed 03/06/2026

After starting the vehicle, I turned on the rear defrost button and within a few minutes the rear window started producing smoke inside the vehicle. I turned the truck off immediately and then approximately 30 seconds later, the rear window on the passenger side shattered. There is a recall that was issued for this exact problem but when i contacted the dealership, I was informed that the recall applied to Canadian vehicle models only and that there was no recall issued in the U.S. for this problem. I believe that there was a great risk for my family's safety as my child sits directly in front of this window and presented an injury risk to her, as well as the overall fire risk that could have occurred if I had not noticed the issue immediately. There were no warnings before the incident occurred. I had to pay out of pocket to have the window replaced.

VISIBILITY — Filed 03/06/2026

The contact owns a 2015 GMC Sierra 2500. The contact stated that while the vehicle was parked, the defroster was activated, and there was smoke inside the vehicle before the rear glass shattered. No warning light was illuminated. The dealer was notified of the failure and informed the contact that the VIN was not under recall. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, and the contact was informed that the VIN was not under recall. The failure mileage was approximately 50,000.

UNKNOWN OR OTHER — Filed 08/10/2023

I have went to a dealership to try and trade this vehicle in and they have informed me that this vehicles odometer has been rolled back prior to me purchasing it. It was not disclosed to me from Bob Rorhman Hyandia that this had happened.

ELECTRICAL SYSTEM — Filed 08/10/2023

Odometer Fraud. The contact purchased a 2015 GMC Sierra 2500. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 189,458 and the contact stated he discovered on Carfax that mileage was 188,052; however, the contact discovered that the mileage was 112,708.

FUEL SYSTEM, DIESEL — Filed 06/17/2025

The contact owns a 2015 GMC Sierra 2500. The contact stated while driving at an undisclosed speed, the vehicle lost automotive power and stalled. No warning lights was illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the Fuel Pump Module needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 129,000.

ENGINE — Filed 03/12/2025

Blown head gasket. Engine hydro-locked.

FUEL SYSTEM, GASOLINE — Filed 11/01/2023

The contact owns 2015 GMC Sierra 1500. The contact stated that while driving on several occasions at various speeds, the vehicle lost motive power. The contact stated that the check engine warning light was illuminated for approximately a month. The vehicle was taken to an independent mechanic and the contact was informed the high-pressure fuel pump was leaking fuel into the crank case, and the high-pressure fuel pump needed to be replaced. The vehicle was repaired; however, the failure reoccurred approximately 1 year and 5 months later. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the high-pressure fuel pump needed to be replaced. The vehicle was repaired. The contact stated that on several occasions while driving at various speeds, there was a loud sound coming from the engine compartment. The vehicle was towed to an independent mechanic where it was diagnosed that the fuel injectors on one side of the engine were not working properly, and that the fuel injectors needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 178,137.

UNKNOWN OR OTHER — Filed 11/25/2024

Had tailgate switch safety recall completed in June 2024. Beginning November 25th, 2024, tailgate switch began randomly opening tailgate while driving and parked with vehicle turned off. The lower “push button” in attached photo is the one that controls the tailgate. One time while closing tailgate, the switch kept activating repeatedly for nearly a minute before it stopped. We live in the mountains and have been having heavy fog and rain. Contacted dealer and dealer stated that we would be responsible for repair. Contacted dealer on December 2, 2024 and dealer scheduled truck for repair December 18th 2024. Truck is not equipped with any indicator if tailgate comes open. Have to keep tailgate strapped shut at all times now.

ENGINE — Filed 10/02/2024

The contact owns a 2015 GMC Sierra 2500. The contact stated that while driving at 45-48 MPH, the check engine warning light illuminated. The contact used a vehicle scanner and retrieved diagnostic test code P0420 that indicated an efficient operating below threshold, and the contact cleared the code. Additionally, the contact stated while the exhaust filter was being cleaned, an unknown message was displayed. Upon clearing the code, the check engine warning light illuminated again. The vehicle was taken to the local dealer, who informed the contact that there was no warranty coverage. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 83,000.

ELECTRICAL SYSTEM,SERVICE BRAKES — Filed 05/01/2024

Electric trailer brake control modular is malfunctioning on my 2015 GMC Sierra Denali 3500. Multiple of sources told me this is a common problem with this generation of GMC.

ELECTRICAL SYSTEM,VISIBILITY — Filed 03/07/2023

The contact owns a 2015 GMC Sierra. The contact stated that when doing the initial start, the rear of the vehicle began smoking and caught on fire. The contact turned off the vehicle and the fire settled however shortly after the rear window fractured. There were no injuries and no medical attention needed. There was no fire report. The contact had taken the vehicle to the dealer who stated that the window needed to be replaced and there was a Canadian recall (Manufacturer Number N192220470 ) for the rear windows defrost failing. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 152,000.

SERVICE BRAKES — Filed 03/06/2023

Press the pedal feels soft vehicle slightly slows then pedal pressures up and truck instantly stops pedal stays hard for a long time having same issue on 15 tahoe

SERVICE BRAKES — Filed 12/31/2022

The contact owns a 2015 GMC Sierra 1500. The contact stated her husband was driving when the vehicle in front of them applied the brakes unexpectedly, the driver depressed the brake pedal but failed to stop the vehicle due to the brake pedal being resistant/ rigid causing the vehicle to rear-end the other vehicle. The contact stated no warning light was illuminated. The air bags did not deploy. The contact stated no one was injured nor sought medical attention. A police report was filed. The driver was able to continue driving to their destination. The contact took the vehicle to the local dealer, where it was diagnosed that the vacuum pump had to be replaced. The dealer replaced the vacuum pump back in October of 2022. The vehicle was repaired but the second vacuum pump was also defective and the dealer replaced it on-site for a third time. The vehicle was repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 85,500. The contact stated that the failure speed was no more than 70 mph.

ELECTRICAL SYSTEM — Filed 10/18/2022

I was driving down the road after turning on the rear window defrost. The cab of the truck filled with smoke billowing from the back seat. I pulled over and turned the truck off. I got into the back seat to try to identify what was on fire, and noticed the lines of the rear window defrost system were actually smoldering. Then one of the rear windshield panels exploded in my face. Upon reading online, it looks like a recall was issued for this same problem in Canada but not the USA.

POWER TRAIN,STRUCTURE,SERVICE BRAKES — Filed 03/27/2022

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.

ELECTRICAL SYSTEM — Filed 12/11/2021

I turned on my rear defroster. I smelled electrical burning and rear window shattered with my 6 month old in the back seat in her car seat. GM states there is a recall which can be referenced as N192220470. Speaking with customer service and dealership the recall is VIN specific and my vehicle is not included in the recall even though the year and make is listed in the recall. Very dangerous, especially when there are passengers in the back seat of the vehicle

VISIBILITY/WIPER — Filed 11/06/2019

TL* THE CONTACT OWNS A 2015 GMC SIERRA 2500. WHEN THE CONTACT AUTO STARTED THE VEHICLE, SMOKE APPEARED FROM THE REAR WINDOW AND A BURNING ODOR WAS NOTICED. THE CONTACT POWERED OFF THE ENGINE. THE VEHICLE WAS RESTARTED; HOWEVER, FIVE SECONDS LATER, THE REAR WINDOW SHATTERED WITHOUT WARNING OR AN IMPACT OCCURRING. THE CONTACT STATED THAT THE METAL THAT HEATED UP THE WINDOW CAUSED THE FAILURE. THE VEHICLE WAS NOT TAKEN TO A DEALER OR AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROVIDED CASE NUMBER: 9/5625662049. THE FAILURE MILEAGE WAS APPROXIMATELY 61,000.

ELECTRICAL SYSTEM,ENGINE — Filed 05/12/2019

ON 5/12/19 THE CHECK BATTERY CHARGING SYSTEM LIGHT CAME ON, SO I LEFT OUT SIDE FACING STREET IN CASE I HAD TO JUMP TO TAKE TO DEALER ON MONDAY. I WENT IN THE HOUSE AND 1/2 HOUR LATER HEARD AND EXPLOSION AND WENT OUT AND THE TRUCK ENGINE COMPARTMENT WAS ON FIRE.

AIR BAGS — Filed 08/19/2018

I WAS DRIVING A GMC SIERRA 2500 (2015) TRUCK ON A ROAD (SPEED LIMIT 65 MPH) AND WAS STOPPED TO MAKE A LEFT-HAND TURN INTO A STATE PART. A DRIVER HIT ME IN THE REAR AT A HIGH SPEED. THE POWDER FROM THE AIRBAG COMPARTMENTS FILLED THE TRUCK CAP BUT THE AIR BAGS DID NOT DEPLOY.

SERVICE BRAKES — Filed 06/30/2017

TL* THE CONTACT OWNS A 2015 GMC SIERRA 2500. WHILE THE VEHICLE WAS BEING REVERSED WITH A TRAILER ATTACHED, THE BRAKE PEDAL WAS DEPRESSED, BUT FAILED TO OPERATE. THE CONTACT STATED THAT THE TRAILER CRASHED INTO THE AWNING OF THE RESIDENCE. THERE WERE NO INJURIES. UPON INSPECTING THE VEHICLE, THE CONTACT NOTICED EVIDENCE OF BRAKE FLUID LEAKING FROM THE BRAKE BOOSTER, WHICH ALLOWED BRAKE FLUID TO ENTER THE CABIN OF THE VEHICLE. THE VEHICLE WAS TAKEN TO PERFORMANCE CHEVROLET (LOCATED AT 3222 BEVERLY PIKE, ELKINS, WV 26241, TEL: (304) 591-1077) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE BRAKE BOOSTER WAS LEAKING AND WAS 1,000 MILES OUT OF WARRANTY. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT CONTACTED OR NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 37,023.

EXTERIOR LIGHTING — Filed 09/14/2016

THE LOW BEAM PROJECTOR HEADLIGHTS ARE INADEQUATE, ESPECIALLY IN RURAL AREAS. THERE IS A DISTINCTIVE CUTOFF OF LIGHT, CALL IT A LINE WHEN ON LOW BEAM, AND BEYOND THAT LINE THEIR IS NO ILLUMINATION WHATSOEVER AS YOU WOULD BE USED TO WITH OTHER LIGHTING DESIGNS. YOU CAN NOT SEE ANY SIGNS, POSSIBLE ANIMALS, OR ANYTHING ELSE AS YOU ARE USED TO SEEING IN THE LIGHT THAT TYPICALLY EXTENDS BEYOND OTHER LOW BEAM SYSTEMS. I UNDERSTAND THAT GM HAS A TSB FOR THE CONDITION BUT IT IS NOT ADVERTISED AND FROM WHAT I CAN DETERMINE ON THE NET DOES NOT WORK REGARDLESS AND IS ONLY A BAND AID FIX. THESE LIGHTS ARE A SAFETY HAZARD. I BELIEVE THIS ISSUE MAY HAVE CONTRIBUTED TO AN ACCIDENT I HAD. ..UPDATED 01/04/17 *BF

SUSPENSION,POWER TRAIN,UNKNOWN OR OTHER — Filed 03/15/2016

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.

POWER TRAIN — Filed 02/13/2016

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.

POWER TRAIN,AIR BAGS — Filed 09/19/2015

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.

AIR BAGS — Filed 11/10/2014

TL* THE CONTACT OWNS A 2015 GMC SIERRA HD. WHILE TRAVELING APPROXIMATELY 75 MPH, A DEAR CROSSED THE CONTACT'S PATH AND CRASHED INTO THE FRONT END AND FRONT PASSENGER SIDE OF THE VEHICLE. THE DRIVER AND THE FRONT PASSENGER SIDE AIR BAGS FAILED TO DEPLOY, BUT A SUBSTANCE WAS RELEASED. ALSO, THE CONTACT ADDED THAT THE FOUR REAR AIR BAGS DEPLOYED AS NORMAL. THE CONTACT WAS ABLE TO MERGE THE VEHICLE OVER TO THE SIDE OF THE ROAD. THE CONTACT SUSTAINED INJURIES TO THE HEAD, NECK, AND BACK, BUT DID NOT REQUIRE MEDICAL ATTENTION. THE VEHICLE WAS TOWED TO AN INDEPENDENT REPAIR SHOP. THE CONTACT WAS TO REQUEST FURTHER INSPECTION OF THE AIR BAGS FROM THE MANUFACTURER AND AN AUTHORIZED DEALER. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 13,000.