Integrated Trailer Brake Control problems of the 2020 Chevrolet Silverado 3500

The contact owns a 2020 Chevrolet Silverado 3500. The contact stated that while hauling a 2020 heartland cyclone, the trailer brakes unexpectedly deactivated. The contact stated that the trailer brake was disconnected, and the warning light to check the trailer winch was illuminated. The vehicle was taken to the dealer, who was unable to determine the cause of failure. The vehicle was not repaired, and the failure persisted. The vehicle was returned to the dealer and the contact was informed that the trailer brake module had failed and needed to be replaced. The trailer brake module was replaced. The failure and repair were linked to an unstated technical service bulletin; however, the VIN was not included. The TSB stated that the RV battery was interfering with the vehicle battery and causing the failure. The contact stated that the failure persisted. The vehicle was returned to the dealer but was not diagnosed or repaired. The manufacturer was informed of the failure. The manufacturer referred the contact to the NHTSA hotline to report the failure. The failure mileage was approximately 52,000.

The contact owns a 2020 Chevrolet Silverado 3500. The contact stated that while depressing the brake pedal, the tailgate brake light failed to illuminate. In addition, the contact stated that while a trailer was hitched to the vehicle, the message "check trailer connection" was displayed, and other unknown warning lights were illuminated. The vehicle was taken to a local dealer where it was diagnosed; however, the failure was not identified. The vehicle was taken to another local dealer, davis-moore Chevrolet (8200 w kellogg dr, wichita, KS 67209) for a second opinion. The vehicle was diagnosed; however, the cause of the failure was not identified. Upon further inspection, the contact related the failure to technical service bulletin: 20-na-198; however, the second local dealer advised the contact that the fix might not repair the vehicle. The contact stated that the failure had progressed over time. The manufacturer was made aware of the failure. The failure mileage was approximately 26,000.