2016 Chevrolet Silverado 2500: fuel pump failure

Filed Jun 6, 2025 · Brakes, Electrical · TN

Tranmission isn't running right and gas and brakes are not working properly. Also fuel pump or relay gets hot shuts off while driving.

Filed Oct 9, 2024 · Brakes, Steering · CA

Chevy Duramax trucks, 2011-2016 use a CP4 fuel pump that will eventually fail. The engine shuts off and there is a loss of steering and brakes. This is a major safety issue. I called Chevy GM 1800 222 1020 and was told, " we are aware of the problem, have no remedy, no recall has been issued yet, call back in a month". My daughter has a 2015 that failed when she was hauling expensive horses, the dealer put the same type defective pump back in the truck. Every diesel repair shop, dealer, and GM is aware of this defect. There is a class action law suit C/O JND Seattle WA. 1 866 848 0815 that may reimburse owners that have had a failure, assuming they are still alive. GM needs to recall, and replace these CP4 pumps with a CP3 or whatever they did to correct the issue in 2017 and later engines, prior to failure. Let ne know if I can provide any more information or assistance.

Filed Dec 7, 2023 · Engine, Fuel system · MA

The 6.6L V8 LML turbodiesel Duramax engine Bosch CP4 fuel pump failed. U.S. diesel fuel does not provide adequate lubrication for the CP4 fuel pump. The lack of lubrication led to internal fuel pump damage and resulted in metal shavings that damaged the pump, the fuel system, and the GM Duramax engine as well. There was no warning lamps, messages or other symptoms of the problem prior to the failure.

Filed Oct 10, 2023 · Engine · NY

My 2016 Chevy at a stop light started jerking and then just shut off and wouldn’t start again. I had to have it towed and was told at the repair shop that it was the CP4 fuel pump that went. Of course I had them do all the repairs and they found metal shavings all through out the fuel system. I was without my truck for weeks and had to pay ridiculous cost of almost $13,000. With how often this is happening this should all be reimbursed to me and GM needs to step up and take care of it along with the federal safety agency.

Filed Aug 15, 2023 · Fuel system · MI

On August 5, 2023 I was driving south on I75 in the Flint, Michigan area With no warning my engine shut down. High Pressure Fuel Pump (Diesel Truck) imploded and pumped metal shavings through the entire fuel system , Fuel Rails, and Injector system. Vehicle is currently being repaired. Repair consist of, Removal of the gas tank and completely clean. Flush and clean the entire fuel system, Remove injectors and replace with new. Replace old fuel Pump with new.

Filed Apr 7, 2023 · Fuel system · 70,000 miles · CA

The contact owns a 2016 Chevrolet Silverado 2500. The contact stated while driving approximately 65 MPH, the vehicle lost motive power, stalled, and stopped in the middle of the roadway. The contact stated that there were unknown warning lights illuminated. The contact had the vehicle towed to a local dealer, where it was diagnosed and determined that the high-pressure fuel pump needed to be replaced. The vehicle had not been repaired due to a national backorder on the part. The manufacturer had been informed of the failure. The contact researched online and related the failure to the federal safety agency Campaign Number: 21E101000 (Fuel System, Diesel). The failure mileage was approximately 70,000.

Filed Feb 9, 2023 · Fuel system · MI

had to replace fuel pump at 60000 miles and had to have aftermarket replacement because dealership has been on back order for months. it was fine when i drove it last then 4 hours later won’t start.

Filed Sep 13, 2022 · Fuel system · CA

I purchased 2016 Chevrolet 2500 HD from the dealership. The truck I bought had the CP4 high-pressure fuel injection pump, which comes standard in all GM-manufactured 2011-2016 6.6L Duramax diesel vehicles such as the Chevy Silverado and GMC Sierra, and it is incompatible with U.S. diesel fuel. The pump was originally designed for use in Europe, where the diesel fuel is "dirtier," or more lubricious, than that of the U.S. Because of the heightened pressure that the CP4 exerts in order to increase fuel efficiency, it causes the pump to disintegrate on itself, as the pump's internal metal parts rub against one another generating friction such that metal shavings wear off and are dispersed throughout the high-pressure fuel injection system. This process begins from the very first crank of the Duramax engine. Once these metal shards have sufficiently contaminated the high-pressure fuel injection system, the CP4 fuel pump will suddenly and catastrophically fail — oftentimes while the vehicle is in motion — and become unable to restart. I’m now looking at a $11,000 repair bill. GM knowingly sold a truck with defective parts.

Filed Jul 27, 2022 · Fuel system · 115,000 miles · IN

The contact's husband owns a 2016 Chevrolet Silverado 2500. The contact stated while her husband was driving 20 MPH and approaching a traffic light, the engine started to misfire. The contact's husband was unable to restart the vehicle after several attempts. The vehicle was towed to the hotel where he was staying. The vehicle was then towed to a local dealer where it was diagnosed that the CP4 high-pressure fuel pump had failed. The dealer also informed the contact that there were metal fragments inside the fuel lines and the fuel injectors. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 115,000.

Filed Mar 28, 2018 · Fuel system · 28,800 miles · MS

Vehicle just shut off while in operation then would turn over but no start. Vehicle was towed to dealership and was advised fuel pump failed and would be covered under warranty. Luckily vehicle was stationary but was in prepartion for a vacation pulling our 5th wheel camper. From researching since this incident, I've been in contact with several individuals who have had this part fail not only while moving but have had it happen twice. Even the service advisor's acknowledge that this part is a known failure item and will happen again. Service department had vehicle for 2 weeks.