2022 GMC SIERRA 3500 Electrical System Integrated Trailer Brake Control Problems

The contact owns a 2022 GMC Sierra 3500. The contact stated while the vehicle was parked, the trailer plug was connected, and electrical fuses popped. The contact stated that all the fuses were blown. In addition, the contact stated while driving the vehicle, the trailer brakes failed to function as intended. The contact stated that the trailer brakes went off and on. The vehicle was taken to the dealer where it was diagnosed with trailer brake control module failure. The contact was informed that the trailer brake control module needed to be replaced. The vehicle was repaired. The contact referenced an unknown recall; however, the VIN was not included in the recall. Additionally, the contact stated that the failure had previously occurred, and an unknown part was replaced; however, the failure reoccurred. The manufacturer was not made aware of the failure. The failure mileage was approximately 31,308.

The contact owns a 2022 GMC Sierra 3500 equipped with a 2024 Gatormade 35+5 Trailer. The contact stated that while driving on several occasions, the "Check Trailer Wiring" message was displayed. Additionally, when the brake pedal was depressed however, the trailer did not slow as intended; however, the rear brake lights were illuminated. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 40,000.