NHTSA Complaint #11683399 — 2022 GMC SIERRA 3500

The contact owns a 2022 GMC Sierra 3500. The contact stated that while driving at 30 MPH, the message “Trailer Brake Disconnected" was displayed on the instrument panel. The contact was hauling a 5th-wheel trailer during the failure. The contact pulled over to the side of the road, turned off the vehicle, and waited for several minutes before restarting the vehicle. The vehicle was taken to the dealer; however, no cause for the failure was found. The vehicle was not repaired. The contact stated that the failure persisted. Most recently, while driving 55 MPH, the message "Trailer Brake Disconnected" was displayed. The contact pulled over to the side of the road, turned off the vehicle, and waited before restarting the vehicle and continuing driving. The contact stated that before the most recent failure, the vehicle was taken to the dealer and the trailer plug was replaced. The vehicle was not diagnosed or repaired after the most recent failure. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 21V758000 (SERVICE BRAKES, HYDRAULIC); however, the VIN was not included. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was approximately 30,000.