2024 Chevrolet Silverado 2500 ELECTRICAL SYSTEM,SERVICE BRAKES

Truck keeps losing trailer brakes, intermittent as i am towing a 10,000 lb camper. Very unsafe

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 finally made it home and today took the vehicle to James Wood Chevrolet in Denton, Texas to have the braking systme checked again. They told me there was nothing wrong with the braking system. The service writer did say that because the trailer has LED lights the braking system does not recognize the voltage from the trailer and that is why the brakes are disconnecting. Please help me find out how to correct this extremely dangerous condition while I am towing my 16,000 pound fifth wheel trailer.

Intermittent loss of trailer brakes. Trailer has small break away battery

Intermittent lose of trailer brakes.

Intermittent lose of trailer brakes. Dealerships are unable to duplicate issue, will not replace under factory warranty. Chevy has not issued a recall for this specific vin. But other 2024 Chevy 2500 have had recalls for it. Would like a recall for my vin die to this being an issue if an accident occurs. Traveling with multiple 10K pound trailers and no brakes.

My trailer brake controller routinely does not allow me to adjust the brake gain. Multiple times (and on recorded video), I’ve had instances where I could not increase gain while hauling heavy loads in the trailer and this has caused me to lose my ability to stop the vehicle effectively. This has nearly cause accidents a few times while hauling on the interstate, and down my mountain road. The driver must be able to adjust trailer gain at any point while operating the vehicle. This issue has happened with multiple trailers. I’ve taken the vehicle in multiple times and had the brake controller components replaced but this issue still exists and the dealerships are unable to resolve. I was informed I have trailer issues even though this only occurs in this vehicle while towing and not other vehicles pulling the trailers. This is a major safety issue and will cause an accident if it isn’t resolved. My only option at this point is to purchase an aftermarket brake controller as my factory brake controller is unsafe. I have multiple videos of this issue and nearly had the trailer push me over my mountain from the issue. This issue has happened since I purchased the vehicle and continues to happen. There are multiple service records which show I requested the brake controller to be fixed. This isn’t a one time date or speed. I’m unable to upload videos I’ve taken on my phone but I can send them in. Reach out to [XXX] for videos. The manufacturer and service centers aren’t helping resolve this. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

intermittent lose of trailer brakes.

Intermittent lose of trailer brakes. Dealer failed to diagnose and fix issues. Stayed if they can not replicate it, they will not warranty it.

Trailer brake control module in vehicle will have intermittent loss of trailer brakes. Dealership stated they will not fix the issue if they are unable to replicate it. Even with video or picture evidence. Dealership has been uncooperative during the process.

Vehicle’s braking system for the trailer constantly disconnects while driving. The trailer will then lose all braking capabilities. Multiple service trailer brake system, check trailer wiring harness, trailer brake connected messages. Issues started shortly after purchasing the truck new at only 55 miles on the odometer

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.

See attached document for complaint.

When pulling trailers I frequently get warning to check trailer wiring. I have gotten this warning with every trailer I have towed to include, my travel trailer(camper), livestock trailer, car hauler trailer and enclosed cargo trailer. It is intermittent but frequent. I am unsure if trailer brakes will engage during this failure.

While towing our camper that has solar power our trailer brakes would randomly disconnect. Sometimes for a few seconds but several times for several minutes. After checking all wiring, doing some research and trial & error we discovered that it is a problem with the truck and the solar on the camper that is making the brakes disconnect. This happens randomly but quite often and it happened to us several times while towing in the mountains of Colorado. It is definitely a safety hazard to not have the trailer brakes. We have towed the same camper with other trucks including the 2023 Chevy that we owned before this truck and have never had a problem.

I kept getting “check trailer wiring” messages followed by a “trailer disconnected” message while towing a trailer and the trailer brakes would not engage. The trailer would “reconnect” and then “disconnect” constantly while driving. I lost my trailer brakes while trying to brake down a hill. Not having working trailer brakes is extremely dangerous.

While pulling fifth wheel camper the the electronic brake controller looses connection and brakes on the trailer do not work leaving only the truck brakes to stop both truck and trailer. General Motors claims this is caused due to the solar panel on the trailer charging the trailer battery more than the truck battery which back feeds into the system. This problem only occurred on the 2024 models. The same trailer was pulled with a 2021 model with no issues. This is a known problem which Chevrolet has a service bulletin stating such. Reference document # 6379278. At this time there has not been a fix. This is a safety hazard because there is no warning as to when the trailer brakes will stop working.

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 [XXX] . This is a serious safety hazard as my trailer brakes have failed to activate while descending some very steep grades in the mountains. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

When truck is connected to a trailer with electric brakes, intermittently a check trailer wiring warning flashes on the dashboard screen. When this happens you do not have trailer brakes. It has happened on multiple trailers with 7 pin connections. I have taken it to the dealer twice with no fix other than GM recommending a non GM trailer receptacle. I have taken my trailer to the dealer and they could find no problems. Basically the 2024 Silverado 2500 HD when hooked to trailers with industry standard 7 pin 12 volt receptacle loses trailer brakes. This condition potentially is fatal and a definite hazard to public safety on roads. problem was reproduced at the Chevy dealership in Pensacola Fl. The problem was reproduced on multiple trailers at Great American RV in DeFuniak Springs Fl.

While towing my fifth wheel trailer, the electric trailer brakes module shuts off with a message "check trailer wiring". When the module shuts off, the trailer brakes do not actuate relying fully on the truck to stop as the trailer brakes will not work. The plug was firmly seated and it caused issues whether using the in bed plug or the bumper plug. After some time, the message would go away and the system would display the message "trailer connected" and the trailer brakes would work again. After some time, the process would repeat several times (30-40 times) primarily from mid morning to evening. I verified plug tightness and applied dielectric grease to ensure a good connection and that did not improve the issue. The trailer is 1 year old and was pulled with 3 other trucks (2 dodge and another Chevy) with no issues at all. I was able to locate a GM bulletin numbered "document id: 6379278" that references this problem and states to disconnect the trailer solar panels while a fix is developed. This was only found on an RV owners forum. I was able to disconnect my solar panels on my trailer and the issue was no longer present with my brakes working properly and no error messages for 10 hours of driving. This is a significant safety issue and needs to be made abundantly clear to drivers who haul trailers. Not all solar panels are easily disconnected and should be done by a qualified electrician due to the potential hazards of their voltage. Additionally, not having trailer brakes while driving on the interstate is a significant safety hazard that greatly increases the chances of an accident as the brakes would stop working without warning including while in use. My vehicle is a scheduled for an inspection at the dealer on 7/22/23.

If our trailer is plugged into the truck the warning "check trailer wiring" pops up. The warning ("check trailer wiring") would display and then the message "trailer connected" would generally happen. The trailer breaks disconnect during this time making it extremally dangerous for us and anyone else on the road if we need to stop quickly. This is not an issue with our new trailer as we pulled it with a 2017 Silverado with no issues.

When towing my travel trailer with the 2500HD, the electronic trailer brake randomly connects and disconnects while driving. This results in the unsafe operation of the trailer because the brakes aren't functional and puts others at risk if stopping was required during the outage. GM/Chevy has created Document #6379278 which admits that this is their issue but they don't seem to be providing a fix.