2022 Chevrolet Silverado 2500: sudden loss of power

Filed Sep 2, 2026 · Electrical, Engine · WI

The vehicle will not allow the truck to be turned off everytime, it states the truck must be in park to be turned off, and the truck is in park. The engine lost power and staleld twice, and loses accelerator power multiple times. The transmission has dis-engaged 3 times. All of this since July 2026. The truck has 54,000 miles on it.

Filed Aug 5, 2026 · Transmission · OK

I own a 2022 Chevrolet Silverado 2500HD equipped with the 6.6L Duramax diesel engine and Allison-branded 10 speed (10L1000) automatic transmission. VIN: [XXX]. While pulling away from a traffic light and accelerating to approximately 20 to 30 mph, the transmission suddenly began shifting harshly and erratically, experienced delayed engagement, unexpectedly downshifted, and would not shift into overdrive. At the same time, the check engine light illuminated and a Reduced Engine Power warning appeared. There were no warning lights, messages, or transmission symptoms prior to this incident. I pulled into a parking lot for approximately one hour, but when I resumed driving, the same failure occurred again. The transmission malfunction created a safety concern because the vehicle unexpectedly lost normal shifting and power while operating in traffic, making it difficult to accelerate and maintain speed safely. I contacted OnStar, which reported both an engine and transmission fault. I then drove the vehicle to my independent diesel mechanic, who diagnosed a failure of the transmission control valve body caused by an internal solenoid that is not serviceable separately, requiring replacement of the complete transmission control valve body assembly. The repair has been completed, so the original failed component is no longer available for inspection. The failure was confirmed by an independent service center. The vehicle has not been inspected by Chevrolet, law enforcement, or an insurance representative. I contacted General Motors to determine whether my VIN was included in the existing transmission control valve recall and was advised that it is not. I am submitting this complaint because my truck experienced the same symptoms and the same component failure as vehicles covered by the recall, despite my VIN not being included. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 28, 2026 · Transmission · UT

The Transmission on my truck down shifted and made it so I lost all power while driving. If I would have been on the freeway it probably would have killed me or caused a serious accident. It is at a shop waiting to be inspected but they said it was the valve body in the transmission. No warning lights came on at all, and the shop had to plug a computer into my transmission to get the codes. GM needs to make this right because it is going to kill someone or cause harm if a bad accident happens due to failure at freeway speeds.

Filed Jul 19, 2024 · Electrical, Transmission · CA

Lost power while driving for 30 seconds. While on the interstate. Now truck battery has to be jumped to start. Dashboard giving out random codes. Check 4x4, check DEF( def is still at half full), check trailer( no trailer is connected) Took to dealership, 4 active codes P0336, P12A6, U029D, U029E. Test failed since code cleared U18D7, U18FE Current codes C1596, C15AC

Filed Jan 5, 2024 · Electrical, Engine · TX

I was almost run over by a Semi-Truck when entering the freeway because my 2022 Chevrolet Truck would not accelerate. I was told at the dealer the loss of power was intentionally caused by the onboard computer. It is programed by the manufacturer to do this anytime certain repairs may be needed. In my case, the life-threatening event I experienced took place because a sensor went out and the computer thought a repair was needed.