2024 GMC Sierra 1500: multiple warning lights

Filed Sep 10, 2026 · Engine · FL

While driving on the highway, i went to pass someone and there was a big shutter in the engine and then a load ticking noise from the engine after. All of the lights came on and the vehicle was running rough

Filed Sep 7, 2026 · Electrical, Engine · NC

My vehicle has experienced repeated and unresolved electrical system failures and unexpected loss of power steering assist. The problem involves multiple warning lights, module communication faults, drivability issues, and simultaneous malfunctions affecting systems including power steering, traction control, transmission, four-wheel drive, and other electronic controls. Repair records, diagnostic information, and videos documenting the failures are available for inspection upon request. The most serious incident occurred on August 23, 2026, when the power steering failed unexpectedly while I was driving. The sudden loss of steering assist made the vehicle difficult to control and nearly resulted in a collision with an oncoming vehicle. The failure created a significant safety risk because it impaired my ability to safely steer and control the vehicle. The condition has occurred multiple times over several months and has resulted in repeated dealership visits. Repairs have included replacement an HVAC controller, but the failures have continued. The vehicle has been inspected multiple times by an authorized dealer, and the manufacturer has been notified through an open support case. As of the most recent repair visit, no confirmed root cause or permanent repair had been identified, and the dealership was still working with engineering support to diagnose the issue. Prior to and during these failures, numerous warning lamps and service messages appeared, including warnings related to power steering, traction control, transmission, four-wheel drive, trailer brake system, steering column lock, and tire monitoring systems. In some incidents, the vehicle entered reduced-performance mode. These warning messages first appeared in November 2025 and have continued intermittently despite multiple repair attempts. The recurring and unresolved loss of power steering assist while driving creates an ongoing risk of crash or injury.

Filed Feb 6, 2026 · Engine · TX

On 5 Feb 2026 I was starting my 4-hour drive back home. 15 minutes into my drive my truck lost power, several lights and the engine light came on. Truck was sputtering and making harsh engine noises and shut off on me. I was forced to exit Loop 2 (a major highway). Once I was able to restate the truck I went straight to the dealership. This truck had the recall done 15 Oct 2025. However, this issues still occurred. The motor gave out. Truck is 83K in mileage. well under 100K. Cost estimate is $6.5K. The technician informed me that a lifter collapsed in cylinder 5. This is clearly still part of the GMC recall issue for the 6.2L engines. What is my next step in this process. If I knew there was a major issue with these Trucks, I probably would not have purchased it. All maintenance has been done with same dealership to keep all service records excess able.

Filed Jan 4, 2026 · Brakes · IL

Break system failed while driving. Multiple warning lights came on including Break System Failire, Service Steering Column Lock, Service Traction Control, Service ESC and Service Brake Pad Monitor. This happened as I was driving and I could barely stop the truck. I had my wife and kids in the car. Luckily, I was not driving very fast and was not in a congested or had to stop quickly. If I had to stop fast or was in a congested area this could have causes a life threatening accident.

Filed Apr 26, 2025 · Engine · MI

In the midst of driving my vehicle, soon after exiting the expressway. I received a notification across the dashboard stating to press the brake to start engine. It was totally confusing because I was actually driving and doing so at a speed of approximately 45 miles per hour because I just exited the freeway. Then I noticed the car would not accelerate. At that point I realized that my car had shut down on me while in the midst of driving. I had to very cautiously maneuver my way through traffic to the side of the road where I parked and called onstar for help. This was a very scary moment because I felt as if I could have very easily caused an accident and injured or cost the life of myself or an innocent person. The engine shut down was not evident because all the dashboard lights were still functioning as normal. I don't feel safe driving the vehicle and would very much like to replace with something else, but I feel stuck with it. Dealership says that the vehicle depreciation for one year was $10,000.00 and that I will have to roll that 10k into the price of any new vehicle if I wanted to get out of the current lease. That makes the purchase of newer, safer vehicle unaffordable for me, so again I feel stuck driving something that could have very easily cost me my life.

Filed Jan 31, 2025 · Engine · OH

was driving on the highway at 55mph and the engine just quit running and thankfully no one was near me and I was able to pull over on the side of the road. All the dash lights stayed on but the truck would not restart,code on dash board said "Conditions not correct for shift" Had it towed to the dealer and they put a new battery in it, but it broke down again on the way home same as before. Now they are telling me I need a brand new engine.

Filed Aug 31, 2024 · Brakes, Electrical · AK

The DIC randomly displays “check trailer wiring” then says “brakes connected” over and over. When this happens the brakes on the trailer quit working, all lights continue to work all the time. It hasn’t been back to the dealer yet but I will take it when I can. Other vehicles have no issues with this trailers brakes when towing. I have replaced the trailer pig tail 7 pin plug, cleaned all connections etc. The only thing that works so far is to disconnect one of 4 electric brakes then the DIC is silent and 3 brakes function. I even replaced some magnets in the trailer brakes but they were working prior to the DIC message that began on my second towing trip. There is a technical bulletin for some GMC trucks but my model isn’t listed as one. I believe it to be the controller or software since nothing seems to work as far as the trailer is concerned. It isn’t my trailers issue…I know they are going to say it is.