2024 CHEVROLET SILVERADO 2500 Electrical System Problems

Transmission lags and slips while over reving the engine. A local gm dealer has confirmed transmission issues and slippage

Very limited while driving in the dark cause head lights go off and can’t drive in the rain or snow cause wipers turn off not save for my family and I and other drivers on the road Thai all happen, After the dealer (Lithia Chevrolet of Redding, CA) performed GM recall programming on the Serial Data Gateway Module (SDGM) and related software updates, my truck began having serious electrical failures. Immediately after the recall work, all exterior lights, interior lights, and trailer lights began flickering on and off while driving. The windshield wipers also pause or stop for a moment when this happens. None of these issues existed before the recall. This appears to be a module reset or corrupted calibration caused during the recall reprogramming. GM has already told NHTSA that they have hundreds of field complaints about flickering headlamps on 2024 trucks, and they identified lighting flicker as a safety defect. My symptoms match those issues exactly. The dealer refuses to accept responsibility, saying the recall is “closed,” but the electrical failure only began immediately after their programming. This is a safety hazard when driving at night or in the rain, and it affects the trailer braking/lighting circuits as well. I have an active GM case opened for this issue. The truck is unsafe to operate in this condition. I am requesting that NHTSA investigate whether the recall programming is causing electrical module failures and whether additional action is needed.

Instrument cluster stopped working, I have no speed or fuel remaining indicators. Dealer completed software recall work which did not fix the issue. Replacement is on back order so I am unable to drive the vehicle for an unknown amount of time.

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated that the trailer brake control module failed to operate as needed while hauling a trailer, causing the trailer to lose braking capability. The vehicle was taken to a local dealer where it was diagnosed, and the contact was advised that the trailer control module was faulty and needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The approximate failure mileage was 63,500.

Mileage: 63,500

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

I bought my track about a year ago. Within the first week of owning it. Multiple times a week, when I start it there is no sound. No radio, music, blinkers, etc. Absolutely no sound. Some of the time once I get to where im going, turn it off. Once I start it again it's back. The other times takes a couple times to hear it again. When I asked the dealership, I was told it's a known issue. 9 months later it still does it. Some weeks once or twice. Other weeks up to 10 times. I pd alot of money for my truck and yes I expect it to have no problems like this.

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.

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. 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.

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

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated while the vehicle was stationary, being driven, or parked, the audible alerts failed to operate as needed. The contact stated while the vehicle was stationary, the audible chime failed to sound whenever the doors were opened, or the seat belt buckle was unlatched. No warning light was illuminated. The vehicle was then taken to a dealer where it was diagnosed with an intermittent loss of audio. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 7,400.

Mileage: 7,400

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.

The contact owns a 2024 Chevrolet Silverado 2500 used for hauling a 2024 Grand Design RV. The contact stated that on several occasions while towing the trailer, the messages that the "Trailer Brakes Disconnected "and "Trailer Brakes Reconnected" were displayed but disappeared every 5 minutes. The vehicle was taken to the dealer; however, the failure could not be replicated. The manufacturer was notified of the failure. The failure mileage was approximately 2,000.

Mileage: 2,000

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 [XXX] 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. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated while driving 65 MPH hauling a trailer, the brake control disabled message was displayed. There were no warning lights illuminated. The contact decelerated. The vehicle was taken to the local dealer, who was unable to duplicate the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 7,000.

Mileage: 7,000

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.

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated while driving at an undisclosed speed and towing a trailer, the trailer brake lights became inoperable. The service trailer brake system warning light was illuminated. The vehicle was taken to the dealer several times; however, the failure could not be duplicated. The vehicle was not repaired. The contact stated that the trailer was replaced with another trailer; however, the failure reoccurred. The manufacturer was not made aware of the failure. The failure mileage was approximately 26,000.

Mileage: 26,000

Charging system failed The system failed with no warning, we were traveling on a country curvy road and about to descend a grade. With the charging system failure, the truck lost power to brakes and steering. It's at the dealer, being inspected etc. No warning lights or message until the failure occured, then a battery light appeared and a charging system failed message.

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.

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.

Mileage: 1,700

Truck sends safety lights on dash one day and the next day they go off. Truck is running rough and has subpar fuel mileage driving 55 to 65 miles per hour. Esc light comes on and steering wheel changes sides to drive straight. Information screen goes black and flashes while driving. I have been in contact with gmc and they said I have to report to you before they will do anything. There was a recall for my type of Truck for poor fuel consumption but my vin was not included. I feel my truck has fell through the cracks and is in need of serious repairs. 72k for this truck and now I am having nothing but problem I feel used... please help! Thanks , [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Truck has been in and out of the shop since July. For more than 70 days total. I received a printout from a Chevy dealership in Georgia that indicated the main computer system lost communication with other components 11 times. It indicated it lost communication with the brake system control module three times and lost communication with the engine control module twice. Not sure exactly what that means, but it sounds rather serious. I've been trying since July to get GM or the dealership to buyback or replace my vehicle. Neither had ANY interest whatsoever. After I provided the attached photo to GM, they decided to buy my vehicle back. Seems that this issue is bigger than I know and surely needs some oversight from NHTSA so no one gets seriously injured due to GM's carelessness to address issues when they were brought up.

On July 1st, 2023, I purchased a 2024 Chevrolet Silverado 2500 from Orielly Chevrolet in Tucson, Arizona. On July 2nd, 2023, an error message popped up on the dash, “Park Assist Blocked See Owner’s Manual”. It continued to happen on and off til this very day. The dealership "attempted" to fix the issue, but it obviously hasn't been resolved. Due to equipment being faulty, the chances of an accident whilst back up are significantly increased. At one point on this ordeal, the truck was in the shop for 61 days. It had been in my possession for 18 days. I am currently in the process of a buyback for the vehicle. I had to hire a lemon law attorney. A supervisor from GM advised that GM is refusing a buy back for the vehicle. The vehicle also displayed an error, "key not found" while I was driving at 50mph. A bit unsettling. That error showed up twice on the dash. The dealership said they fixed the issue with a software update. Recently, the vehicle has a ticking noise on the left side of the engine, and the engine idles so low, that it feels like it's going to stall. Those issues haven't been addressed at the shop, because I start a new job on Monday(12/4) and had to drive over 2k miles to get here. Thankfully the truck made it. Not a concern I should have with a brand new vehicle.

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated that while hauling a travel trailer at various speeds, the check trailer wiring warning message intermittently flashed on the instrument panel. The contact had taken the vehicle and the travel trailer to the respective dealers; however, neither dealer were able to determine the cause of the failure. Upon investigation, the contact discovered a TSB: 23-NA-113 which he linked to the failure. The bulletin stated that the travel trailer brake might become disabled due to a solar panel battery charger. The contact stated that whenever the trailer battery was fully charged and had a higher charge than the vehicle’s battery, there could be a back feed into the trailer brake power module causing a shutdown. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was approximately 1,500.

Mileage: 1,500

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated that while hauling a travel trailer at various speeds, the check trailer wiring warning message intermittently flashed on the instrument panel. The contact had taken the vehicle and the travel trailer to the respective dealers; however, neither dealer were able to determine the cause of the failure. Upon investigation, the contact discovered a TSB: 23-NA-113 which he linked to the failure. The bulletin stated that the travel trailer brake might become disabled due to a solar panel battery charger. The contact stated that whenever the trailer battery was fully charged and had a higher charge than the vehicle’s battery, there could be a back feed into the trailer brake power module causing a shutdown. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was approximately 1,500.

Mileage: 1,500

The integrate trailer brake control system malfunctions when a trailer equipped with solar panels is hooked up. I recently rented a newer travel trailer and kept on getting a warning that the brake control system was disengaging. Every 30-60 seconds the system would connect and the quickly disconnect. I troubleshooted by hooking up a trailer without solar and the brake controller worked as intended. I also troubleshooted with the trailer by hooking up a 2015 Ford F-350 and the trailer brakes worked as intended. This is a known issue among the 2024 Chevy 2500 and 3500 owners that have reported the same issue. Replacing the trailer control system does not fix the issue.

The GM brake controller will disconnect with the trailer being pulled. You get a message on the information center that the brake controller has lost connection with the trailer or no trailer brakes are available, something to that effect. This has happened up to 5 times in one day. You never know when this will happen. Pulling a 7,000lb trailer and not knowing when you will have 'no brakes' is dangerous. I bought the truck to pull my RV trailer, now am afraid too. I brought my truck into a dealer and first was told "the issue is in the trailer". There is a bulletin saying the issue is do to 'the solar panels or solar generator', I have nether, just one lead acid battery. Then was told 'they don't know what they can do'. I've been in contact with other that have the same make, model, and year that is having the same issue ! I now have a very expensive vehicle that I can't do with what it was advertised it could do !!!

Instrument Cluster screen blinking On/Off and showing "Service Instrument Cluster" message. Lost all indications of speed, warnings, gauges, gear selection. Could not tell if vehicle was performing correctly. All sensors appeared to be working, but indications to driver missing.

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.

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.

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated while driving at various speeds, the message "Check Trailer Wiring - Trailer brakes Disconnected" was displayed on the instrument panel. The contact stated that the failure caused the trailer brakes to fail to engage as needed. The vehicle had been taken to the dealer and it was confirmed to be a known failure however, the cause of the failure was not found. The vehicle had not been diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 1,000.

Mileage: 1,000

Truck will not stay connected to our trailer brakes. We have a 2023 Grand Design Reflexion 270BN. The truck stays connected about 30% of the time. 70% of the time we get the following warnings “Check trailer wiring” or “service trailer brakes” and the trailer brakes are disconnected. Grand design has said this is 100% on the truck side. GM needs to find an update for this dangerous problem. We almost got into two crashes on a 2000 mile trip. Multiple people are in the same situation as us.

TRAILER BRAKES DISABLED INTERMITTENTLY. PROBLEM IS NOT WITH TRAILER IT IS THE TRUCK. TOOK IT TO DEALER THEY COULD NOT REPAIR SAID THAT General Motors IS WORKING ON A CORRECTION. THIS IS DANGEROUS IF TRAILER BRAKES ARE NOT ENGAGED IT WILL PUSH THE TRUCK.

Pulling my 5th wheel camper and the trailer braking system goes in and out. It says, "check trailer brake wiring" and "service trailer brake". I have pulled same camper with a 2020 Chevrolet and didn't experience any issues. I have found some forums discussing that it's a GM problem with a service bulletin from GM #6379278 stating GM is working on the issue. This is a very concerning issue especially when towing over 10,000 lbs.

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)

The vehicle has, on numerous occasions, gone into a "Check Right Front Turn Lamp" or "Check Left Front Turn Lamp" while operating the turn signals. Vehicle then goes into "hyperflash" on the turn signal indicating a fault when the error message appears and renders the signal non-functional. Vehicle does not return to normal until it is shut off and restarted. Vehicle was taken to dealer for service on this item, the computer was re-flashed with latest software but problem persisted. Dealer indicated they believed there was no issue with the turn signal lights, it was a software issue in the truck. Servicing dealer is Jim Norton Chevrolet in Broken Arrow, Oklahoma. I have noted others in internet research with the same model of truck and similar LED lighting equipment experiencing the same fault.

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.

Brand new truck, 1st time towing through mountains of Kentucky, we kept getting "check trailer wiring", "trailer brakes disconnected" "service trailer brakes" I did research and took the truck in for service. They found nothing wrong, but said we should get an adapter and gave me the name of two. We had the camper checked as well, no issues. Many complaining on blogs about this issue and many have also been told to get an adapter. Really? why would I need a $200 adapter and the fact they already knew which two I should buy, tells me, they know its an issue with the vehicle. Pretty scary when we had to come to a stop on the freeway and we didn't have trailer brakes. Never had any issues pulling it with our 2021 silverado 1500. This is really dangerous

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.