2023 Chevrolet Silverado 2500

The high pressure fuel pump “grenaded” while driving on the interstate. Caused an immediate shutdown and barely got off the main lane to the shoulder in extremely heavy traffic putting me, my wife and others in imminent danger. The components were inspected by the dealer mechanic and insurance adjuster and they said that is what happened and that there was no reason for it to have happened. A warning of reduced power appeared about 3 seconds before the truck completely shutdown.

On February 3, 2026, my vehicle was taken to Rick Hendrick Chevrolet of Buford for diagnosis of a fuel system failure. The dealership charged a $235 diagnostic fee and concluded that the failure was caused by fuel contamination from an outside source. Based on this determination, my warranty claim with General Motors was denied and my case (#89096714) was closed. After this determination, the vehicle was transported to an independent diesel repair shop for further inspection. During the initial inspection, the technician removed the intake cover and discovered a large crack in the fuel injector pump. The pump had catastrophically failed and internally disintegrated, sending metal fragments throughout the fuel system. This clearly indicates the contamination originated from an internal mechanical failure of the fuel injector pump, not from outside fuel contamination. The independent technician confirmed that the injector pump failure caused metal debris to spread throughout the fuel system. Additionally, there was a visible leak at the front of the engine, which should have prompted further inspection in that area during the dealership’s diagnosis. It appears the dealership’s conclusion was based primarily on fuel sampling, without performing a full mechanical inspection of the injection pump and related components.

When putting vehicle in park, I get a message on dash that says "shift to park" when the vehicle is already in park. The vehicle electrical components does not turn off. Sometimes if I wiggle/hit or stick my hand under the steering wheel adjustment lever I can get it to turn off. Becoming more troublesome. Through research I see it is a common issue among GM/Chevy vehicles.

Will pulling camper, truck lurched with hard shift at around 35mph and caused a sudden slow down in traffic. Truck then went into limp mode with engine light illuminated. Pulled over to turn vehicle off and restart. Attempted to gain speed again and similar lurch with hard shift at around 35-40mph. Vehicle again in reduced power mode. Was able to ease truck to dealer where code reader showed P0700 and P0747. This was similar to issue found in recall for model years 2020-2022 with GM 10L1000 transmissions. There has been a technical service bulletin issue by GM regarding models years 21-25 but no recall. Dealer has ordered parts for TSB but repair not performed yet.

While driving, the 10l1000 transmission in the truck attempted to shift from 6th gear to 7th gear. The transmission locked up causing a violent "buck" from the rear end of the truck. The road was icy and could have caused the truck to lose control due to the lock up of the rear wheels. After getting the truck to a repair shop, valve body was deemed the cause of the failure. A complete transmission replacement is needed. Had I lost control of the vehicle due to the lock up, my family and other motorists would have been put at risk of severe injury or worse. No warning lights were illuminated prior to failure.

tramsmission valve body failed causing lack of porpulsion and inability to put the pickup in park while in traffic. after coasting to the nearest chevy dealer they cleared the codes so i could drive home and take it to my local chevy dealer asap. the local chevy dealer refused to inspect it until the check engine light came back. one week later the transmission violentley down shifted into 5th gear and stayed there until it was shut off it would not go into park. on the second occurances it gave codes p0700 and p0747. it was towed to the local chevy dealer who claimed to inspect on 3 ocassions but efused to give me any paper work on the results of the inspection. beacuse they never inspected it. i took it to an indepent mechanic to replace the valve body. the 5000 miles since the valve body replacement have been uneventful. no indicators of failure were seen before the inital failure.