Integrated Trailer Brake Control Problems of Chevrolet Silverado 3500

The contact owns a 2025 Chevrolet Silverado 3500. The contact stated that while driving at various speeds and towing a trailer or an RV, the brake pedal was depressed, and the trailer brake failed to engage. The contact stated there was no warning light illuminated. The contact stated that the failure was intermittent. The contact stated that the manual trailer brake was able to activate, and the trailer brake engaged to slow the trailer or the RV. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the tow hitch wiring harness needed to be replaced. The contact stated that the tow hitch was factory installed. The vehicle was repaired; however, the failure reoccurred. The manufacturer was not informed of the failure. The failure mileage was approximately 1,500.

Consistent error messages when trailering that lead to vehicle having a failure of trailer brakes.

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The contact owns a 2024 Chevrolet Silverado 3500. The contact stated while driving at an undisclosed speed and towing a camper, upon coming to a complete stop, the message "brakes disconnected" was displayed. The vehicle returned to normal functionality, but the failure became a regular occurrence. No other warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure a failure with the brake control module. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the dealer, who again diagnosed a failure a failure with the brake control module. The vehicle was repaired, but the failure reoccurred. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 200.

The contact owns a 2024 Chevrolet Silverado 3500. The contact stated while driving at an undisclosed speed and towing a trailer, the trailer brake light turned off, indicating that the trailer brakes were no longer functioning. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the brake control module. The vehicle was repaired, but the failure reoccurred. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 500. The VIN was not available.

The contact owns a 2024 Chevrolet Silverado 3500. The contact stated while driving 30 mph and attempting to depress the brake pedal, the message “trailer brakes disabled” was displayed. A dealer was contacted. The vehicle was taken to the dealer and the contact was informed the contact the vehicle was operating as designed, and that neither the vehicle nor the trailer would be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure and opened a case. The approximate failure mileage was 12,000.

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.

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The contact owns a 2015 Chevrolet Silverado 3500. The contact stated that while towing a camper, the brakes locked up. The service trailer brake system message was displayed. There was an abnormal beeping noise detected and the instrument cluster was flashing. While driving approximately 60 mph, the vehicle was vibrating. The vehicle was taken to the local dealer but the mechanic was unable to duplicate the failure. The vehicle was not diagnosed or repaired. The vehicle was taken to an independent mechanic but the mechanic was unable to assist. The manufacturer was not contacted. The failure mileage was approximately 1,000.

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2015 chevy 3500 hd has 65,xxx miles on it currently. Truck periodically and usually randomly displays a "service trailer brake" message which constantly goes off when nothing is being towed. Now about 1 in 15 times driven will it not display this message. Ive had the towing brake module replaced and that did not fix this problem. I'm at my wits end with this truck. Chevrolet / GMC need to step up and make this widely known problem a recall. Thanks.

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.

2012 Silverado 3500hd with dealer installed dejana rugby dump body the dump body hoist makes contact with the electronic trailer brake/body control module eventually cracking open or damaging the top of the module and allowing moisture/water inside damaging the module. This causes a no start condition and or erratic gauges, door locks, abs & brake lights to come on, drivability issues truck can go into a limp mode with no shifting etc. Test equipment shows no communication to ecm errors and drivetrain- problem will occur while driving. When the trailer brake control module is unplugged all symptoms will go away and truck will function normal. This problem started with a service trailer brake warning from the vehicle information center in the dash.

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