2023 Chevrolet Silverado 1500: start-stop system problems

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 Oct 16, 2024 · Electrical, Engine · NV

Within weeks of buying the truck the Auto STOP/START quit working. I never gave it much thought until after a service visit and it was again working. I asked the dealer and they said the battery voltage dropped below a set level, turning off the Auto STOP/START. It quit again days later and has never worked again. There is no apparent reset. My battery voltage is normal, I have a REDTIGER F7N 4K Dual Dash Cam running 24/7 but it is drawing 4.5 to 5 watts; the car is rarely left parked for more than a day. I was initially bothered that there was no On/Off for the Auto STOP/START but I am even more frustrated that it is no longer working and no apparent reset short of taking the truck to the dealer for service.

Filed Apr 1, 2024 · Brakes, Electrical · GA

The contact owns a 2023 Chevrolet Silverado 1500. The contact stated that the vehicle was designed with the Auto START/STOP feature. The contact stated that while at a complete stop, the engine shut off and failed to restart upon releasing the brake pedal to drive the vehicle. The contact stated that the failure had been recurring. The vehicle was taken to the dealer, where it was diagnosed that the Auto START/STOP sensor had failed and needed to be replaced. The vehicle was repaired. Additionally, the dealer advised the contact to disengage the feature when driving. The contact followed the dealer's recommendation. The contact stated that on one occasion after forgetting to disengage the feature before driving, while at a complete stop, the engine shut off and hesitated to restart. The message "Brake System Failure" was displayed, and the brakes became inoperable. The contact pumped the brake pedal, but the vehicle failed to respond. The contact allowed the vehicle to roll from a complete stop and pull into a gas station. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline for assistance. The failure mileage was unknown.

Filed Feb 15, 2024 · Engine · TX

2023 Chevrolet Silverado ZR2 purchased 7/10/2023 with a 6.2L gasoline engine - Lifter and engine bearing failure leading to complete engine failure at 5920 miles on [XXX]. Dealership has been in possession of the vehicle since [XXX]. Engine failed, leaving me stranded at an intersection blocking traffic in single digit temperatures. Due to the electronic gear shift, there was no way to put the vehicle in neutral to move it from the intersection. The tow truck driver was forced to drag the vehicle onto flatbed tow truck, possibly damaging other components in the process. This appears to be a common issue that is known by General Motors without remedy. Appears to be related to the Dynamic Fuel Management system and spring-loaded lifters that fail. The vehicle has been inspected by Chevrolet Dealer, who determined it needs a full engine replacement. There were no warning lamps or messages leading up to the failure. Vehicle drove normal for over 100 miles on the highway. Upon exiting the highway, the auto start stop feature turned the engine off at a stop light. Upon letting off the brake, the engine struggled to start back up and check engine light came on. Pulled over immediately, and upon stopping at the stop sign the engine seized and would not restart. This led to me blocking an intersection for over an hour in single digit temperatures waiting for the police and a tow truck. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)