Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 GMC Sierra 1500 owners, lightly cleaned up (personal details are redacted by NHTSA).
I was towing a camper down Rt 422 in Butler, PA in my GMC truck when it suddenly caught fire. My wife was following me and alerted me to pull over as quickly as possible. I had no brakes and the gear shifter went straight up without shifting. The doors would also not open while the truck was filling with smoke. I got out using the manual unlock knob and am lucky to be alive. We had about one minute to try to extinguish the flames before it fully engulfed both my truck and camper. I filed a complaint with GMC. By what I am reading online there are many instances of fires and GMC does not seem to provide assistance. This is very unnerving and scary to say the least. I am sad and angry for this situation. This happened through no fault of my own and I lost absolutely everything. I was in the middle of moving to start a new job and lost many work items in my truck as well. …
I remote started my truck, and when I got to it there was smoke and a flame coming from the rear power window. The remote start activates the rear defrosters, which started the electrical issues. I shut off the engine, and a loud pop followed, which was the shattering of the driver side rear window. The flame went out, and could have easily ignited the tarp covering the truck bed. There were no warnings on the console for the issue, and no recalls available. I have seen similar recall, but in a different state and back in 2022. This leaves me with a shattered window in the back, which is unsafe for visibility, and a bill to pay due to manufacturing errors for a feature in the truck. The rear window is all melted, and the glass is chipping away.
The contact owns a 2015 GMC Sierra 1500. The contact stated that while starting the vehicle, there was no audible chime or alert heard. After driving and then restarting the vehicle there was still no audible sound from the electrical system. There were no warning lights illuminated. The vehicle was taken to the local dealer, who informed the contact that the battery needed to be replaced. The vehicle was not diagnosed or repaired. The contact replaced the battery, but the failure persisted. The manufacturer was not notified. The contact stated that the failure was related to NHTSA Campaign Number: 14V301000 (Electrical System, Seat Belts) however, the VIN was not included. The failure mileage was approximately 75,000.
The contact owns a 2015 GMC Sierra. The contact stated that while driving at an undisclosed speed and also while the vehicle was parked, the ABS and stability control warning lights would unexpectedly illuminate. The vehicle was taken to an independent mechanic, where the warning lights were cleared. The contact was informed that if the failure recurred, the EBCM and BPMV would need to be replaced. The vehicle was not repaired. The contact stated that the failure recurred. The vehicle was then taken to the dealer, where it was diagnosed that the EBCM and BPMV had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 90,100.
The contact owns a 2015 GMC Sierra 1500. The contact stated that while driving at various speeds, the transmission failed to operate as designed causing the vehicle to sputter and not properly accelerate. Also, the digital speedometer display would not display properly due to a faulty radio. Additionally, the driver's side headlight failed to properly illuminate due to moisture build-up inside the headlight assembly. The vehicle was taken to the local dealer who was unable to duplicate the failure. There was no service performed on the vehicle. The manufacturer was not notified of the failure. The approximate failure mileage was 1,000.
The contact owns a 2015 GMC Sierra. The contact stated that while driving approximately 25 mph with the defroster activated when they began to smell something seeming to be overheating. The contact heard a sudden pop sound and later noticed that the rearview window on the side had fractured. The dealer was made aware of the failure and informed the contact that due to them already receiving a recall remedy for the failure they were unable to get the repair done again free of charge. The vehicle had been repaired for the glass to be repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 30,000.
The contact owns a 2015 GMC Sierra 1500. The contact stated that while driving at low speeds, there was a reduction in the power steering assist. The stability track and abs warning lights were illuminated. The electronic power assist became inoperable. The vehicle was taken to the local dealer but was not diagnosed nor repaired. The manufacturer was notified of the failure. The contact stated the failure was like NHTSA Campaign Number: 18V586000 (Steering). The failure mileage was approximately 87,000.
The contact owns a 2015 GMC Sierra 1500. The contact stated that while driving at various speeds, the warning message "Service Trailer Brake System" was displayed along with an audible warning chime although no trailer was being towed. The vehicle was taken to the local dealer who was unable to duplicate the failure and no service repairs were performed; however, the failure recurred intermittently. The manufacturer was not notified of the failure. The failure mileage was 90,000.
The contact owns a 2015 GMC Sierra 1500. The contact stated that the vehicle failed to start. The vehicle was towed to the dealer and the contact was informed that the fuse box had caught on fire during the failure. There were no occupants inside the vehicle at the time of the failure. No injuries were sustained. There was no Police or Fire report filed. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 60,218.
The contact owns a 2015 GMC Sierra 1500. The contact stated while driving at various speeds, the vehicle loss motive power with the service stabilitrak warning light illuminated. The vehicle was restarted and operated as intended. The dealer was contacted and the contact was informed that the VIN was not under recall. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 78,000.
Electrical complaints in other Sierra 1500 years
Frequently asked questions
How common are electrical problems on the 2015 GMC Sierra 1500?
NHTSA has 96 complaints about the electrical system of the 2015 GMC Sierra 1500, 13% of the model year's 719 complaints. The component named most often is integrated trailer brake control (2 mentions).
Is there a recall for 2015 GMC Sierra 1500 electrical problems?
No. NHTSA lists no electrical system recall for the 2015 GMC Sierra 1500, though it has 9 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2015 GMC Sierra 1500 electrical problems start?
Half of the complaints with a recorded mileage happened before about 46,000 miles, and 21% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 6 fires and 0 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.