2019 GMC Sierra 1500 electrical system problems

Related recalls

• Recall 19V888000Dec 12, 2019350,371 vehicles
  ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES

  General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks. The battery positive (B+) cable rings may have been manufactured with excessive glue, potentially causing an intermittent electrical connection between the B+ cable and alternator.

  Risk: An intermittent electrical connection between the B+ battery cable and the alternator could cause the vehicle to stall, increasing the risk of a crash. The intermittent connection could also lead to electrical arcing, which could generate sufficient heat to damage surrounding material, increasing the risk of a fire.

  Remedy: GM will notify owners, and dealers will inspect for the presence of glue or other contamination at the B+ cable attachment to the alternator and clean the connection and reattach the B+ cable connection, as necessary. If arcing has damaged the cable, nut, or alternator, the dealer will replace the damaged components. All services will be performed free of charge. GM issued owners an interim notification on February 4, 2020. GM issued second notice and the recall began March 9, 2019. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267. GM's number for this recall is N192273510.

What owners say

1. Filed Sep 20, 2026WACrash1 injuredTowedAirbagsElectrical SystemOther / Unknown

   The vehicle has experienced repeated Electronic Stability Control (ESC) malfunction warnings that appear related to a prior GM recall for ESC malfunction codes. These warnings occurred before and after dealer repairs. The ESC malfunction may have affected other safety systems. I was involved in two separate accidents while driving this vehicle, and in both incidents the airbags did not deploy. In one accident, the vehicle struck multiple objects in a frontal collision at…

   NHTSA complaint #11765694 · source
2. Filed Jun 23, 2026MIElectrical SystemEngineLighting

   I am retired and have always bought GM vehicles which are taken care of with required oil changes etc. This one I have only owned 25,000 mi each year (I have owned two years). So, when purchased it has high 50,000 miles not sure of exact, and it has only been driven 2 years. When calling escalation at GM, they act as though it doesn't matter and too bad. 110,000 miles and the truck needs a new motor. This is what we are told and 10,000 more than the initial 1500 to tear it…

   NHTSA complaint #11746005 · source
3. Filed Jun 2, 202664,000 miVAElectrical SystemLighting

   The contact owns a 2019 GMC Sierra 1500. The contact stated that the trailer lights flashed intermittently while the vehicle is turned off. Additionally, the contact stated while driving with a trailer hitched to the vehicle, the messages "Trailer Disconnected" and "Trailer Connected" were intermittently displayed, and the running and marking lights were inoperative. The contact related the failure to GM TSB Numbers: 20-NA-198 (Trailer Running Lights Shut Off Due to…

   NHTSA complaint #11741465 · source
4. Filed May 3, 2026OHBrakesElectrical SystemEngine

   I am getting warning signs on the dashboard saying that my brake booster performance has failed and I need to service the brake booster , the brakes are very hard to press, I need longer stopping distances,and traction control and stability control towing harness my speed has been limited to 43 mph and it's saying that the mass air flow system is has low circuit

   NHTSA complaint #11735386 · source
5. Filed Apr 17, 2026159,000 miKYTowedElectrical SystemEngine

   The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving approximately 45 MPH, the accelerator pedal was depressed; however, the vehicle lost automotive power and stalled. Several unknown warning lights were illuminated when the vehicle stalled. The contact was unable to restart the vehicle, and the vehicle was towed to the residence. The contact became aware that the 400 AMP fuse was blown. The contact replaced the fuse and replaced the starter,…

   NHTSA complaint #11731823 · source
6. Filed Apr 1, 2026103,000 miMETowedElectrical SystemEngine

   The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle lost automotive power; however, the vehicle maintained electrical power. The check engine warning light was illuminated. The vehicle was towed to a local service center, where it was diagnosed and determined that the battery needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the same local dealer and…

   NHTSA complaint #11728443 · source
7. Filed Mar 27, 2026MNElectrical System

   The park assist would go on when i was at a stop light and no one was in front of me and auto stop was off all the time. Two ground straps were corroded. There is a recall on them from 2019 to 2024. My truck did not have a recall on it. I just want to let you know and maybe if enough people complain, you will put all trucks on the recall.

   NHTSA complaint #11727566 · source
8. Filed Dec 30, 2025WYBrakesElectrical System

   The vehicle is available for inspection - 35,000 approximate miles with a ebcm module repair needed in order to repair it to a level that meets federal motor vehicle safety standards of at minimum s5.3 no.126 & s5.1 no. 135 - i believe this vehicle should have been/should be included in the original and/or expanded recall n192268091. The vehicles electronic brake assist is not working causing it to be disabled. It has been inspected by denny menholt gmc. Warning…

   NHTSA complaint #11707766 · source
9. Filed Dec 24, 2025MSElectrical SystemEngineFuel, Hybrid & EV Propulsion

   I was driving up the road truck cranked up fine started a morning commute, on cruise control the truck instantly out of nowhere lost power completely with no signs of anything and engine won’t attempt to turn over now. I fear the worst has happened which would be catastrophic internal failure for to a faulty engine & its internals.

   NHTSA complaint #11706910 · source
10. Filed Dec 10, 2025TXElectrical SystemSteeringTransmission & Drivetrain

    The contact owns a 2019 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the vehicle jerked and failed to accelerate as intended while depressing the accelerator pedal. There was an abnormal sound coming from the transmission. The message "Reduced Engine Power” was displayed and the transmission warning light was illuminated. The vehicle was taken to the dealer and the transmission was repaired. The contact stated that the failure persisted. The…

    NHTSA complaint #11704348 · source
11. Filed Nov 23, 2025ILElectrical SystemEngine

    Complete engine failure. I was driving approximately 55 miles an hour, then all of a sudden the cruise control automatically shut off and a series of alarms are triggered. When pressing the accelerator pedal, the engine vibrated excessively in Cleary indicated catastrophic engine failure. I was lucky enough to make it to the nearby dealer who confirmed a complete engine failure. I ended up buying a new vehicle that day to avoid being stranded.

    NHTSA complaint #11701098 · source
12. Filed Nov 21, 2025NVElectrical SystemEngineFuel, Hybrid & EV Propulsion

    my engine went out with no lights or warnigns prior to engine going out. Now we still making payments for the truck,expensive truck and we haven't use it because we dont have the money to fix it.

    NHTSA complaint #11700926 · 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