2025 GMC Sierra 1500 electrical system problems

Related recalls

No recalls on file.

What owners say

1. Filed Sep 17, 202634,637 miMOTowedElectrical SystemEngineTransmission & Drivetrain

   The contact owns a 2025 GMC Sierra 1500. The contact stated that while driving approximately 5 - 10 MPH, the vehicle went into LIMP Mode and failed to properly accelerate, and the transmission unexpectedly downshifted. There was an electrical malfunction, which caused the transmission to downshift. An unknown message was displayed on the instrument panel. The contact stated that the network was not operating at the correct voltage due to the wiring harness. The engine light…

   NHTSA complaint #11765016 · source
2. Filed Sep 9, 2026NVElectrical SystemEngine

   When updating the vehicle as prompted by the entrainment system the next day when attempting to start the vehicle it did not start. Vehicle had to be jumped then 6 warning lights came on and disappeared shortly after driving.

   NHTSA complaint #11763207 · source
3. Filed Aug 27, 2026NEElectrical System

   I pulled up to a local store and parked. Just as I was getting out I saw smoke coming from the upper seatbelt area of the rear drivers side seat inside the cab. I jumped in back to see if there was a fire. As I was trying to pull out the top cushions of the interior roof, trying to locate a possible fire, the rear driver-side window suddenly "exploded" - broke in a web pattern across the entire window. I then broke out the center of the glass in case a fire started. I could…

   NHTSA complaint #11760148 · source
4. Filed Aug 21, 2026TXElectrical SystemLightingSuspension

   The truck when put in parking it still roll forward a little bit. Back up camera can’t not see during night time. Dealership stated they will not solve that problem and tell us to do manually by turn around look back. The suspension really bouncy but the tech stated that is normal. Spoke to other 3rd party tech they said that not normal at all.

   NHTSA complaint #11758448 · source
5. Filed Jul 9, 2026MNElectrical System

   Interior Electrical System / Center Console Wireless Charging Pad The plastic housing surrounding the factory wireless phone charging pad in the center console has visibly melted and deformed. The damage is localized to the area directly above/around the induction charging coil, with no similar heat damage to adjacent console plastics, indicating the wireless charging module itself is the heat source. I stopped using this charging location upon noticing the deformation. This…

   NHTSA complaint #11749350 · source
6. Filed Jun 26, 2026MOElectrical SystemFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   While driving at highway speed, my 2025 GMC Sierra suddenly began slowing down without warning and lost propulsion. When I pressed the accelerator, there was no acceleration response. The vehicle felt like it was braking or dragging instead of accelerating, creating a serious crash risk in traffic. A warning message appeared instructing me to “Put in neutral and restart truck.” I followed the instruction, but the vehicle would not restart. It sounded like it was attempting…

   NHTSA complaint #11746696 · source
7. Filed May 4, 2026MIElectrical SystemEngineAcceleration & Cruise Control

   First occurrence was 02/27/2026 - onstar detecated a critical issue, the check esc, check tsc words came on in the center dash, then the orange lights came on and my truck went into limp mode at a stop light. I had to limp mode a mile to the nearest dealer. Where nothing was repaired just reset. Second occurrence - exhaust flap valve failed creating chirping noise resulting in a muffler replacement on 04/28/2026 - picked the vehicle up on 04/30/2026 Third occurrence -…

   NHTSA complaint #11735531 · source
8. Filed Apr 28, 2026MDElectrical System

   Got in started Truck and there is no Sound anywhere... none for blinkers, radio, warning lights if there to be any. ZERO sounds. This has been investigated by Hertrich Service--showed video of no sounds coming from truck speakers at all. This is safety hazard with no audio warnings or blinkers, flasher sounds at all.

   NHTSA complaint #11734260 · source
9. Filed Mar 31, 2026UTBrakesElectrical System

   I stopped at a stoplight and my truck shut off, the doors unlocked and then immediately restarted and then came up with a bunch of errors telling me that my brake system failed and to get the traction control serviced. I then had no power braking. This is the second time my truck has shut off at a light and restarted, but I don’t lose my brakes the first time.

   NHTSA complaint #11728395 · source
10. Filed Feb 25, 202616,000 miTXElectrical SystemEngine

    The contact owns a 2025 GMC Sierra 1500. The contact stated that while stopped at a traffic light, the gear shifter was shifted to park(P) and the vehicle stalled. The message "START Engine" was displayed. The vehicle was restarted, and the Auto START/STOP feature was disabled by pressing the "A" inside an orange circle. The contact stated that on another occasion while reversing into the driveway, the vehicle stalled. The message "START Engine" was displayed on the screen.…

    NHTSA complaint #11720526 · source
11. Filed Feb 16, 2026ARElectrical System

    This happens many times, at random intervals, and sometimes it does not happen at all, but I would say about 33% of the time, it happens. When you put the vehicle into reverse, the side mirrors will lower slightly, so that its easy to see the ground, or parking lines, etc. When you then go back to park or forward gear, the mirrors are supposed to go back to the position they were earlier. The original starting point. But that's the problem, many times, they do not go back to…

    NHTSA complaint #11718238 · source
12. Filed Jan 28, 2026PAElectrical SystemSteering

    Heated steering wheel reaches temps of 137 - 143 degrees. Should have the ability for the owner to select a lower temperature setting the same as the heated seats.

    NHTSA complaint #11713989 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology