2015 Chevrolet Silverado 2500: fuel pump failure

Filed Jun 3, 2025 · Fuel system · 190,000 miles · MS

The contact owns a 2015 Chevrolet Silverado 2500. The contact stated while driving approximately 65 MPH, the vehicle stalled. The contact stated there was no warning illuminated. The contact had the vehicle towed to a local dealer, where it was diagnosed and determined that the high-pressure diesel fuel pump had failed, and the entire fuel system needed to be replaced. The vehicle was repaired. The manufacturer was informed of the failure and referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was approximately 190,000.

Filed Nov 14, 2024 · Fuel system · IN

CP4 fuel pump caused the vehicle to shut down and stopped running.

Filed Sep 13, 2023 · Fuel system · CA

Per a report from Car Complaints, the lawsuit alleges that 2011- through 2016-model-year Chevy Silverado and GMC Sierra pickups equipped with the 6.6L V8 LML turbodiesel Duramax engine are equipped with defective Bosch CP4 fuel pumps that are more fragile and prone to wear than previous CP3 fuel pumps. According to plaintiffs, the defective CP4 pumps can be destroyed by U.S. diesel fuel, which is allegedly “drier” than diesel fuel in other countries. The lawsuit alleges that U.S. diesel fuel does not provide adequate lubrication for the CP4 fuel pump. The lack of lubrication can lead to internal fuel pump damage and result in metal shavings that damage the pump, the fuel system, and the GM Duramax engine as well. This damage can lead to the truck stalling and losing power, and may require the vehicle to be towed to a shop, leaving customers with big repair bills. The lawsuit goes on to allege that GM was aware that the Duramax engines and related fuel pumps were defective prior to selling affected vehicles, but declined to notify customers. Rather, GM allegedly concealed that the defective CP4 pumps may be destroyed by U.S. diesel fuel.

Filed Mar 6, 2023 · Engine, Fuel system · MS

Fuel pump failure while driving highway speed 70mph pulling a trailer. Engine light came on and engine went to limp mode for a few seconds then completely shut down without warning while still going at least 60. Lost power steering and power brakes. Service center confirmed the code for "low fuel rail pressure" and did the repair. I have retained the CP4 pump for analysis. I was very lucky to not crash my truck.

Filed Jul 7, 2022 · Fuel system, Transmission · CA

Fuel pump cracked under normal wear and tear under 60,000 miles leaving me stranded for a week and costing $1600 to replace. Transmission is very unresponsive and soupy, sometimes it kicks in late, other times not at all. Ive read this is a known issue with my vehicle.

Filed Jun 17, 2015 · Electrical · MA

Vehicle has had several electrical issues, including backup camera not functioning, radio info screen disappearing, traction control must be turned off in order to have reasonable throttle response when under 40 degrees outside, most significant is the fuel pump fuse blowing multiple times and shutting the engine down which creates an unsafe condition since there is a sudden loss of power. Chevrolet unwilling to repair and is refusing to return calls on my inquiry about the safety of this vehicle.