2012 Chevrolet Silverado 2500 fuel system problems

Filed Dec 8, 2023 · Fuel system · TX

Was driving the truck doing 65 on the highway and the cp4 ruined the whole fuel system. That includes the fuel rails injectors and pump! Ended up costing me around $8,000 I believe!

Filed Oct 31, 2023 · Fuel system · 22,000 miles · FL

The contact owns a 2012 Chevrolet Silverado 2500. The contact stated while driving at various speeds, a message indicating that the DEF system had failed was displayed. The contact stated that the vehicle was taken to several unknown dealers, where the O2 sensor, a diesel injector, and other unknown repairs were performed; however, the failure recurred while driving. The contact stated while driving 65 MPH, a message indicating that the DEF system had failed was displayed. Additionally, the vehicle went into LIMP Mode and gradually decelerated. The contact was able to drive to the nearest independent mechanic, where it was diagnosed that the DEF system, fuel pump, and oxygen sensor had failed. The vehicle was repaired; however, the contact was concerned that the repair was temporary. The manufacturer was notified of the failure. The failure mileage was approximately 22,000.

Filed Sep 13, 2020 · Fuel system · 218,000 miles · CA

In 2017 my bosch cp4 fuel pumped failed, mark christopher replaced due to recall. While driving 70 MPH on the freeway on september 1, 2020 my truck completely shut down, had a complete loss of power, and power steering was lost. Had to make my way to side of freeway and call for a tow. This was the second failure of the bosch cp4 fuel pump, which was installed three years prior. Mark christopher chevrolet and gm will not replace under recall. Knowing that this is recalled product they are fusing to replace it.

Filed Sep 12, 2017 · Engine, Fuel system · 76,000 miles · CA

Vehicle would not start when warmed up after shutting off.

Filed Aug 3, 2017 · Fuel system · 128,000 miles · MS

Bosch cp4.2 fuel pump malfunctioned and contaminated the entire fuel and injection system with metal shavings. The truck engine stopped while traveling at 50 MPH on a city street and left me with no power steering. The entire fuel system needs to now be replaced and not covered by the manufacturer. Repair bill of over $7,000.

Filed Dec 19, 2016 · Fuel system · 130,000 miles · CA

Tl* the contact owns a 2012 chevrolet silverado 2500. While driving 10 MPH, the vehicle stalled without warning. The vehicle was towed to the dealer to be diagnosed. The contact was informed that there was metal contamination in the fuel system due to a fuel pump fracturing in the fuel tank. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 130,000.

Filed Jun 22, 2016 · Body, Engine · 40,000 miles · TX

Cracked front dash between airbag and window defrost vent, possible airbag deploy issue. Check engine light illuminates when first engine start or during use on my lml engine: repeat failing glow plugs, repeat nox sensor and def issues. There have been failing oat sensors, failed driver seat cooling fan(s), defective airbag deploy issue due to possibly poor connector seating. Engine glow plug usully occurs at or near initial startup. Nox fails when underway or near startup. Seat cooling failures have occurred twice. Driving is both city street and highway operation. Glow plug failures usually wherever I initiate startup. Dash crack, possibly affecting airbag deploy has not been warranted, rather, gm wants me to subsidize the repair/replacement of the dash

Filed Jun 13, 2016 · Fuel system · 117,000 miles · GA

I was driving down a highway road when my vehicle abruptly lost power, I received a warning from my dashboard saying fuel filter needs replacing and subsequently lost engine power which resulted in no power steering and no brakes. I was able to keep the vehicle under control and got it to the side of the road before it became dead. After getting the vehicle towed to a garage it was determined that the cp4 fuel injection pump had failed resulting in fuel being starved from the engine and the result was the engine shutting off. The repairs alone for this single failure are $8550 because this pump has fouled all the fuel injectors and regulators in the fuel system. Most importantly though, I was fortunate enough to be in a position on highway where I had no traffic behind me, and on a relatively straight road where I was able to get to the curb before it become a bigger problem. From what I have found this is becoming a common problem on all of the duramax 6.6l lml engines utilizing this type of fuel injection pump and gm needs to recall these systems and repair them. I do not have the repair invoice yet because the vehicle is still being repaired but will be happy to supply it when I receive it.

Filed Dec 26, 2014 · Fuel system · 47,000 miles · CA

Tl* the contact owns a 2012 chevrolet silverado 2500. The contact stated that while driving at approximately 35 MPH, the vehicle stalled. The vehicle was not able to restart. The vehicle was towed to a dealer, who diagnosed that the fuel pump needed to be replaced. The technician mentioned that the fuel pump fractured and debris went through the fuel system causing internal damages. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 47,000.

Filed Aug 5, 2014 · Fuel system · 120,642 miles · CA

Vehicle would not start. When they put it on scope they found that the fuel rail pressure was to low. They found metal shavings throughout the fuel system as if a part was coming apart from the inside. They had to replace entire fuel system from pump to injectors plus all the lines and injection pump. This vehicle is 2 years old.