2024 Chevrolet Silverado 2500 Brake Problems

Mileage when the problem started

Owner reports

Selected complaints filed with NHTSA by 2024 Chevrolet Silverado 2500 owners, lightly cleaned up (personal details are redacted by NHTSA).

I was towing a dump trailer with gravel in it down a gravel road grade (downhill around 5-7mph) and received a warning on the DTC about the trailer brake being disconnected. All of the lights on the trailer were still working, however the trailer brakes no longer functioned and all of the braking was transferred to the truck. The trailer slowly pushed the rear end of the truck around causing the vehicle to jackknife and causing significant damage to the bumper and bed. After researching this post incident, there appears to be numerous complaints and TSB from chevy regarding a faulty brake controller when towing a trailer where the voltage can backfeed into the vehicle causing the vehicle brake controller to disable. Currently working with insurance to come up with a damage quote. Bulletin # 23-NA-149

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated that while driving with a travel trailer attached to the vehicle, the braking system intermittently failed to operate while depressing the brake pedal. The contact stated that the "Check Trailer Wiring" message was displayed on the instrument panel and then followed by the "Trailer Brakes Connected," message. The vehicle had been taken to a dealer; however, no defect was found with the vehicle. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was 1,700.

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated while driving at an undisclosed speed, the brake pedal was depressed; however, the brake failed to function as intended. The contact stated that the failure occurred while a trailer was connected to the truck. The vehicle was taken to the dealer; however, the contact was informed that there was no resolution. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 15.

Component - Integrated Trailer Brake Controller Safety - caused a vehicle skid and loss of control Inspection - it is scheduled to go in to the dealer today Warnings - the dash messages "Trailer Brakes Connected" and "Trailers Brakes Disconnected" displays often when a trailer is connected, as frequently as several times per minute. I believe that NHTSA and GM are aware of issues with the trailer brake connector on these vehicles. The integrated trailer brake controller connects and disconnects the trailer brakes as often as several times per minute. I have confirmed there is no issue with the trailer. The issue appears to be in the truck. This led to a near-miss accident. I was towing a double axle trailer with electric brakes on I-77 in West Virginia. The trailer brake controller disconnected and reconnected throughout the drive with warning messages displaying on the dash. …

The trailer brake controller on the vehicle is defective and keeps connecting and disconnecting. It's a known issue to the manufacturer as shown in service bulletin #6379278 image attached. The manufacturers solution is to contact the trailer manufacturer for instructions on how to disable the solar charge controller. I have done this but the trailer manufacturer (Grand Design) will not provide me with this information as they are saying this is a Chevrolet issue and Chevrolet needs to resolve it. This now places me in a situation where I am traveling with a trailer that randomly, and intermittently, has no operating brake system. This places me and the driving public in danger. This problem has been inspected by the manufacturers dealer and they have provided me the technical bulletin referenced above. …

While pulling my Vilano fifth wheel trailer to Alabama from my home state of Texas the driver information center alerted me that the trailer brakes were disconnected. Then a short while later it alerted that trailer brakes were connected. This situation continued for the entire trip to Alabama. When the info center indicated trailer brakes were disconnected, they were indeed not working. Several times I almost rear ended cars stopping in front of me. (The vehicle had a recall notice urging to take it in and replace the brake module shortly after purchasing it. I did this.) Once I arrived in Alabama I took the vehicle to the Chevrolet dealership in Foley, Alabama to check the braking system. They told me there was no problem with the braking system. I retrurned to my home in Little Elm, Texas with the problem occurring the entire trip. …

I would like to report a hazardous issue with the 2024 Chevrolet Silverado trailer braking power mode. The trailer braking system turns on and off when the loaded trailer is connected; this represents a security hazard since this truck is used for work and we move heavy pieces of metal and glass. This issue was reported several times to the dealership Lou Bachrodt Chevrolet in Coconut Creek, FL. Also, the manufacturer provided a letter indicating the replacement of some parts. As indicated, I took the truck to Lou Bachrodt Chevrolet in Coconut Creek, FL, on [redacted] for the corresponding service; however, the truck is still presenting the same issues. We tried different trailers, including a U-Haul trailer, and still had the same dysfunctionality. Please advise how to proceed.

I have been going through a nightmare with my new 2024 Silverado 2500HD with the trailer brake that randomly connects and disconnects. My wife and I live Part-time in our 5th wheel RV and pull it on average once a week as we move from place to place for 6 mo out of the year. The issue is very random and we have had the truck at two different dealers to try and solve the problem. The Truck dealers point to the RV Mfg and the RV Mfg point to the truck Mfg. After doing quite a bit of searching, I found a GM tech bulletin GM 6379278 in regards to this issue so I now see on the internet and youtube many others are having the same issue. This appears to be quite the life threatening issue that can easily end badly. They talk about a solar pkg or generating package causing this problem, I have neither. The bulletin is applicable to 2024 3500's and 2500's

While driving with a trailer connected the display in the truck will say trailer disconnected. Then the light will go away and come back on. The trailer plug and the trailer are connected and the plug is tight. When this happens the trailer braking system is disabled (trailer has no brakes) I can plug the same trailer to Ford or Dodge with no issues. Have had the Chevy to the dealer 4 times now and they are unable to duplicate the problem. I have researched the problem on the internet and there are a lot of discussions of other people having the same issue. GMC has replaced the trailer control module, but this did not fix my problem. I am at the point the dealer and GMC are giving me the run around. I bought this truck for commercial use and frequently haul trailers. It is very unsafe when the brakes on the trailer are disabled.

When my fifth wheel trailer is attached via the seven pin plug, the truck intermittently fails to recognize the trailer and I get a warning "check trailer wiring." When I get that warning, the integrated trailer brake controller fails to activate the trailer brakes. After a while I get the message "trailer brakes connected" and then the trailer brake controller activates the trailer brakes. This problem does not occur when the trailer is attached to a different truck. Apparently this is a well-known problem that GM has failed to correct or inform customers about. Please see the comments at [redacted] . This is a serious safety hazard as my trailer brakes have failed to activate while descending some very steep grades in the mountains.

Brake complaints in other Silverado 2500 years