I own a 2015 Chevrolet Silverado 3500HD Duramax diesel. At approximately 130,000 miles, the high-pressure CP4 fuel pump failed internally, sending metal shavings throughout the fuel system and contaminating major components. The truck suddenly lost power on the freeway and became inoperable without warning. I was barely able to get out of traffic before it had to be towed to a Chevrolet dealership. This created a serious safety hazard, especially considering the risk if it had happened while towing my fifth wheel with my family. A failure like this should not happen at this mileage on a heavy-duty diesel truck. I also cannot afford the extremely high cost of repairing the entire fuel system. From my research, many other owners have experienced the same CP4 fuel pump failure, which often destroys the entire fuel system and leads to very expensive repairs. I believe this is a widespread defect, not normal wear and tear. I ask the federal safety agency to review these failures and take action to protect vehicle owners from similar dangerous and costly failures. This truck currently sits at the dealership as I cannot afford the repairs and GM will not fix what they know is faulty parts.
2015 Chevrolet Silverado 3500 fuel system problems
15 complaints (29% of all complaints for this car). Typical mileage when it fails: 114,000.
- owner complaints
- 15
- of this car's complaints
- 29%
- typical mileage
- 114,000
- crashes
- 0
- recalls
- 1
Which part fails
- Fuel filter1
At what mileage
Complaints by mileage at the time of the problem.
Chevrolet Silverado 3500 fuel system problems in other years
Specific symptoms reported on the 2015 Chevrolet Silverado 3500 fuel system
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
Fuel system, gasoline: storage: auxillary tank
- What is wrong
- General Motors LLC (GM) is recalling certain 2011-2015 Chevrolet Silverado 3500 and GMC Sierra 3500 trucks equipped with dual fuel tanks. The low fuel level sensor for the front tank may stick causing the rear tank to overfill the front tank.
- Risk
- If the front tank overfills, the excess pressure may cause the front tank to expand and contact the driveshaft, possibly resulting in a hole in the tank. The hole will leak fuel, which in the presence of an ignition source, can increase the risk of a fire.
- Remedy
- GM has notified owners, and dealers will replace the rear tank fuel pump or update the fuel-level sensor software, as well as inspect the front tank, replacing it as necessary, free of charge. The recall began December 11, 2017. Owners may contact GM customer service for Chevrolet 1‑800‑222‑1020 or for GMC customer service at 1‑800‑462‑8782. GM's number for this recall is 17399.
Recall number 17V664000 · Recall details
What 2015 Chevrolet Silverado 3500 owners say
Most recent owner complaints, unedited.
Truck was operating on the highway at highway speed. Suddenly the truck went into a drastic engine power reduction mode and severe automatic downshifting occurred; the truck came to a complete stop on the highway. Diagnostics proved to be a CP4 injector pump failure sending metal into the fuel system, needing a complete contamination kit and new CP3 pump conversion. This apparently is a known defect in GM vehicles and should have been recalled.
Exhaust filter plugged due to turbo not working properly. Been at dealership going on 7 weeks This is the 3rd new vehicle we have had this has happened to.
The contact owns a 2015 Chevrolet Silverado 3500. The contact stated that while driving 65 MPH, the message "Fuel Filter Needed to be Replaced" followed by the "Engine Power Reduced" were displayed on the instrument panel. The contact then stated that fuel started leaking from the vehicle and the vehicle stalled. The contact was left stranded in the middle of the road; a tow truck was called, and the vehicle was towed to an independent diesel mechanic. The mechanic performed a diagnostic test, and the contact was informed that the fuel pump had disintegrated which caused debris from the fuel pump to leak into the fuel system. The contact was provided an estimate to replace the fuel pump, fuel pump filter, fuel pump housing, and the fuel injectors. The manufacturer was notified of the failure and referred the contact to the NTHSA Hotline to file a complaint. The vehicle had yet to be repaired. The failure mileage was approximately 270,000.
Bosch CP4 fuel pump failed 400 miles from home leaving us stranded. We were towed in and spent thousands of dollars and 5 weeks to have the truck repaired. Only warning was that the truck was losing power and barely got off the road.
CP4 fuel pump failed while driving 250 miles from home. It was towed in and diagnosed, resulting in over $12,000.00 Dollars to replace fuel system due to metal pumped into fuel system. The mechanic sent the pump back as a core charge. We were stranded and freezing with our dog and towed in after several hours. The only warning was the vehicle was reducing power and I was able to get off the highway.
The contact owns a 2015 Chevrolet Silverado 3500. The contact stated while driving approximately 35 MPH, the check engine warning light illuminated. The contact had taken the vehicle to an independent mechanic where it was diagnosed and determined that the High-Pressure Fuel Pump (HPFP) needed to be replaced. The vehicle had not been repaired. The contact was advised that the HPFP were on national back order. 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 150,000.
Tl* the contact owns a 2015 chevrolet silverado 3500. The contact stated while parked, the high-pressure fuel pump failed without warning. The contact stated he heard an abnormal noise and turned off and restarted the vehicle however, the vehicle shutoff without warning. The contact had the vehicle towed to woodland chevrolet (530 quality cir, woodland, ca 95776) where the vehicle was diagnosed with a high-pressure fuel pump failure. The vehicle remained at the dealer unrepaired. The manufacturer was notified of the failure and a case was filed. The failure mileage was 180,000.
Cp4 fuel pump failure and engine failure- started truck that morning, 5 min later it shut off and hasn't started again. Hub exploded making 4wheel drive impossible when driving down hey. Ac blender stopped working AC vents blow hot air on right side of dash while in motion.
Tl* the contact owns a 2015 chevrolet silverado 3500. The contact stated that while driving approximately 40 MPH, the vehicle stalled without warning. The contact coasted to the side of the roadway. The vehicle was towed to pinegar chevrolet buick gmc of branson (163 adair rd, branson, mo 65616, (866) 311-4731) to be diagnosed. The contact was informed that the fuel system was defective. The vehicle was not repaired. The manufacturer was contacted and notified of the failure. The manufacturer informed the contact of an ongoing class action lawsuit however, the VIN was not included. The approximate failure mileage was 114,000.
Questions about the 2015 Chevrolet Silverado 3500 fuel system
Does the 2015 Chevrolet Silverado 3500 have fuel system problems?
Owners have filed 15 complaints about the fuel system of the 2015 Chevrolet Silverado 3500, 29% of all its complaints.
At what mileage do 2015 Chevrolet Silverado 3500 fuel system problems start?
The typical (median) mileage in owner complaints is 114,000 miles.
Was there a recall on the 2015 Chevrolet Silverado 3500 fuel system?
Yes, 1 recall: 17V664000. Check your VIN to see if your car still needs the free repair.
What year does the Chevrolet Silverado 3500 have the most fuel system problems?
The Chevrolet Silverado 3500 model years with the most fuel system complaints are 2015 (15 complaints), 2016 (11 complaints) and 1998 (10 complaints).
Other 2015 Chevrolet Silverado 3500 problems
Electrical 16Brakes 10Engine 8Transmission 5Visibility 5Steering 4Body 2Acceleration 1Airbags 1Seat belts 1Tires 1
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