Chevrolet Silverado 1500 start-stop problems

Filed Oct 19, 2026 · Brakes, Engine · FL

My 2026 Chevrolet Silverado 1500 Trail Boss, equipped with the 5.3L V8 engine and 10-speed automatic transmission, intermittently experiences a complete engine stall while the vehicle is still moving. This condition typically occurs following an extended period of driving, during braking and deceleration at approximately 1 to 5 mph. The vehicle locks the emergency brake and the engine stops. This happened in stop/go traffic as well as in my neighborhood. As the vehicle approaches a complete stop, the engine begins to struggle, with noticeable hesitation and a reduction in engine RPM, before shutting off completely. When the engine stalls, the transmission automatically shifts into Neutral, requiring me to restart the engine before I can resume driving. This is not normal automatic engine start/stop operation. The issue occurs even when the automatic start/stop feature has been manually disabled. The engine shuts down unexpectedly without driver input or an intentional shutdown command. The intermittent nature of this malfunction makes it difficult to predict when the vehicle will stall. The unexpected loss of engine power while the vehicle is moving creates a significant safety concern, particularly when braking, turning, entering intersections, or maneuvering in traffic. The vehicle could become temporarily disabled in an active roadway, increasing the risk of a collision. I have identified reports from other owners of 2026 Chevrolet Silverado 1500 vehicles describing similar unexpected engine shutdowns during low-speed operation, including instances where the transmission shifts into Neutral and requires an engine restart. The cause of this malfunction has not been determined. I am requesting that the federal safety agency investigate whether this condition represents a broader safety defect affecting 2026 Chevrolet Silverado 1500 vehicles equipped with the 5.3L V8 engine. I am concerned this could happen on the highway or cause an accident. Dealer cannot replicate...

Filed Oct 15, 2026 · Brakes, Engine · TX

On [XXX], at approximately [XXX], I was driving my 2026 Chevrolet Silverado 1500 RST (5.3L V8, 4WD), leased new on [XXX], with about 122 miles on the odometer. I came to a complete stop at a stop sign on an uphill grade at [XXX]. The Auto Stop/Start feature shut the engine off while I held the brake, as designed. When I released the brake to proceed, the engine did not restart, and the truck rolled backward down the grade. The instrument cluster displayed "Press start button." I pressed the start button, the engine started, and I released the brake again. The truck again rolled backward, and the cluster again displayed "Press start button." At this point, the vehicle was in park and with the parking break engaged. I pressed start a second time. I released the parking brake, shifted into Drive, and was finally able to proceed. In total there were 2 failed restarts after an Auto Stop event, 2 uncommanded rollbacks on an incline, and 1 automatic parking brake engagement. No collision occurred. However, the truck rolled backward toward another vehicle behind it with no engine power, and I had to restart it twice while stopped at an intersection. This is a serious safety hazard in traffic, especially on hills. GM has published Preliminary Information bulletin PIT5689N, "No Restart after an Auto Stop Event / No Crank," covering 2020-2026 Silverado 1500 trucks. It cites a loose or broken engine ground strap as a possible cause. This vehicle is 5 days old and the defect appeared within 116 miles of delivery. I am disabling Auto Stop manually at every startup until the vehicle is repaired. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 6, 2026 · Electrical, Engine · MS

I am reporting a safety concern involving my 2026 Chevrolet Silverado 1500 High Country equipped with the 6.2L V8 engine. I purchased the vehicle new on August 3, 2026. The engine has unexpectedly shut off on two separate occasions while the vehicle was still moving at low speed. The first incident occurred within approximately the first week of ownership, when the truck had less than approximately 1,000 miles on it. I was slowly driving through the parking lot at McB’s when the engine unexpectedly shut off while the vehicle was still moving. The instrument panel displayed “Press Brake to Start.” The engine did not automatically restart, and I had to stop the vehicle and manually restart the engine. The second incident occurred on September 18, 2026, while I was slowly driving through a parking garage. Again, the vehicle was still moving when the engine unexpectedly shut off. The instrument panel displayed the same “Press Brake to Start” message. The engine did not automatically restart, and I again had to manually restart the vehicle. I have a video recording of this incident. This vehicle is equipped with automatic engine Stop/Start. During normal Stop/Start operation, “AUTO STOP” is indicated on the instrument panel when the system shuts the engine off. During neither of these two incidents did the instrument panel indicate “AUTO STOP.” Instead, the engine unexpectedly shut off while the vehicle was moving, displayed “Press Brake to Start,” and required a manual restart. Both incidents occurred while maneuvering at low speed in parking areas. I am concerned that the same failure could occur at a higher speed, while entering or crossing traffic, or in another situation where an unexpected loss of engine power could cause a collision. The vehicle has also experienced intermittent electrical/electronic issues, including radio interruptions, remote-start problems, a “Key Not Detected” message, memory-seat/seat-recall problems, and an intermittent power running-

Filed May 13, 2026 · Engine · PA

Hello, I purchased this truck new in November of 2025. Around 1500 miles and a few months later the truck developed what sounds like some sort of belt squeak or chirp upon startup, light acceleration and when the engine auto start/stops. I took it to my local dealer and they told me they “lubed the belt” the noise became faint but still didn’t go away. Around 3k miles the noise is back as loud as it was. Back to the dealer, a new serpentine belt the noise is again quieter but still exists. This needs to be addressed many people online are dealing with this and the dealer is giving us the run around trying to say it’s normal for a brand new $70,000 dollar truck to squeak and chirp!

Filed Jan 24, 2026 · Engine · CA

The right bank lifters collapsed this was back in January of 2020. The right bank lifters were replaced haven't had any issues with the lifters since I did however deactivate DFM and auto stop start and I know that is why there hasn't been any more lifter issues. This complaint was way overdue I should have done it years ago.

Filed Jun 17, 2025 · Acceleration, Brakes · FL

Vehicle started and behaved as expected when leaving my home and for a dozen lights or so between my home and place of the incident. While stopped at a red light, the auto stop function shut the truck down as normal. On re-start when getting green light, after releasing brake pressure, the start up was belabored for two turnovers before starting up. As I pulled off the stop with a green light, the dash lights illuminated and display started rolling through system failures, one of which was the brakes system and ESC. I cautiously proceeded through my turn to a thankfully quiet intersection as the brakes were completely unresponsive. I had ZERO brake function. I was able to slowly come to a rolling stop enough to get the truck in park where I turned it off and back on and the brake function returned. I cautiously drove to the local chevy dealer where I was informed that the battery drain pulls from low voltage when it needs extra power for start up. This is utterly terrifying that it is even possible for the battery to start the truck WITHOUT ANY BRAKE FUNCTION. Had this happened just two lights before or after where I was, it would have been a news headline. I could have easily been headed up and over a bridge leading to a catastrophic event at the bottom where I would have been completely unable to stop my truck by any means other than a collision. I would have preferred a dead battery at a red light. Seems a whole lot safer. I'm now stressed beyond measure at the thought of some failure in the future that could lead to another event such as this. My truck is now a nightmare wondering what electrical malfunction is going to put me and/or my wife and daughter in a life or death situation, let alone others on the road. This shouldn't even be an option for the truck to start at the expense of a critical safety function. Not to mention there is no function for the auto start stop system to be deactivated permanently by my choice. I am beside myself and scared to drive.

Filed Mar 23, 2025 · Engine, Fuel system · FL

The symptoms since the beginning of 2024 have been that when braking between 7 and 10 mph, you feel a bump or a skid, and when you stop, the engine shakes for a moment as if it's going to shut off. This happens with the Auto Stop-Start off. A sudden braking moment can affect the vehicle's performance, making it difficult to control and increasing the risk of accidents, especially when it comes to a pickup truck that may have a trailer with cargo or objects in the bed that can be thrown. The trailer can even leave the road, losing control of the car. In 2024, I took the truck to the place where I bought it, Bomnin Chevrolet Dadeland, for a checkup. I explained all the symptoms to my advisor, just as I do here. I had to take it to wait for a loaner. A few days later, I took it back, and they had it for almost a week. When I picked it up, my advisor told me everything was fine. When I left the dealership, I found the same symptoms, so I went back and told him the car was still doing the same thing, and he told me it was normal. After much insistence, he got in the car with me to show him the problem, and the car did it several times, but according to him, it was normal. Now, in 2025, a week ago I took it to Miami Lakes Auto Mall to get checked out with the same symptoms and explanation. I started investigating why that couldn't possibly be normal car operation. They found they had to replace the torque converter and valve body because they found an excessive amount of metal in the transmission. The valve body is on back order indefinitely at all dealerships, so I had to take the car in that condition. Before taking it, I spoke with the manager and GM to ask them to give me a car until they fixed mine because it wasn't right for me to drive the car like that. But they didn't offer me anything. I took it back to Bomnin Chevrolet Dadeland and they told me they were going to change the transmission and torque converter and conveniently they didn't have to change the valve.

Filed Feb 20, 2025 · Driver assistance, Electrical · 18,000 miles · OR

The contact owns a 2023 Chevrolet Silverado 1500. The contact stated while operating the vehicle, the Auto START/STOP feature malfunctioned, and the vehicle turned off at the stop light while attempting to accelerate. During the failure, the instrument cluster shut off and displayed a black screen. Additionally, on one occasion while reversing, the back over prevention camera screen switched to a black screen, and the vehicle shut off. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not yet notified of the failure. The failure mileage was 18,000.

Filed Feb 4, 2025 · Electrical · OH

My DIC showed a message of Shift to Park. This has prevented me from turning my truck off. I have been stranded on a couple of occasions until finally I was able to push the Stop/Start button to turn my truck off. Also has prevented me from locking my truck at times. The fact that I can't turn my truck is a real safety problem and also creates the possibility of it rolling down hill. Being stranded is the worst part and if I can't turn my truck off at some point the battery is going to go dead. There are several bulletins out on at least 5-6 GM cars with this problem - #19-NA-206 and 04-00-89-053 from engineering. I finally to feel safe I had to go to my local Chevy store and get it fixed costing me 563.24 plus tax. I need to be reimbursed for this as GM has been aware of this problem since 2018.

Filed Jan 21, 2025 · Engine · MI

Driving in traffic on two lane, busy state highway at 55MPH the engine stalled without warning. I started pulling over to the shoulder of the road while trying to process what happened. To restart the engine required me to place the automatic transmission in neutral and press the keyless stop/start button. Someone driving the vehicle besides myself may panic and place the gear selector in the wrong position thereby causing an accident at highway speeds. Had this happened in a busy intersection it may caused a collision. Luckily the engine restarted and was able to proceed without incident.