2015 Chevrolet Silverado 2500 engine problems

Filed Jan 10, 2026 · Engine, Fuel system · IL

My pickup truck has a Duramax diesel engine with a CP4 diesel injection pump. That pump has not failed yet in my truck. However it has been known to fail in numerous other GM vehicles with Duramax engines and when it does fail the engine comes to a complete stop and cannot be restarted. This is a potentially hazardous even fatal situation. Repair if the pump fails is very expensive - $12,000 to $14,000 in some cases. I would like GM to replace the injection pump at my dealership to ensure this known failure does not occur. My pickup truck is otherwise in excellent condition.

Filed Aug 13, 2023 · Engine, Fuel system · MI

The fuel injection pump malfunctioned causing the truck to shut down going down the highway. It was taken to a professional and was confirmed to be an issue with these vehicles. There was no warnings at all. The cost to repair was $8000.00

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 Feb 13, 2023 · Engine, Fuel system · 143,000 miles · MI

The contact owns a 2015 Chevrolet Silverado 2500. The contact stated that while driving at various speeds, the vehicle entered LIMP Mode with a warning message indicating how many miles before the vehicle would independently turn off. The contact had taken the vehicle to a dealer and was informed that the diesel exhaust fluid (DEF) tank needed to be replaced; however, the failure returned. Over time, the rear brakes, rotors, calipers, and various other parts had been replaced; however, the repairs failed to fix the vehicle. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 143,000.

Filed Feb 18, 2022 · Engine · NY

When engine is cold you can smell exhaust fumes . Studs in engine are broke. smelling fumes is not a safety issue ? One other thing the battery distribution block was bad and GM knows its bad, they built a new . The truck shuts off wile driving, or does not start till you hit it with a hammer.

Filed Nov 18, 2021 · Engine · NC

The crank shaft broke at 130k miles and this becoming common to this year and model. The mechanic who has the same truck could not fathom this catastrophic failure at such a early life in this truck. This repair is estimated at 5,000.00-10,000.00 and if this does not work the durmax diesel motor will have to be replaced.

Filed Jul 13, 2021 · Engine · 280,000 miles · MI

The contact owns a 2015 Chevrolet Silverado 2500. The contact stated while driving 70 mph, the vehicle loss motive power and stalled and shifted into reduced power mode. The contact had the vehicle towed to the local dealer who inspected the vehicle and diagnosed the vehicle was a Diesel Exhaust Fluid build-up which caused an extreme burn in the exhaust fluid. The dealer replaced the DEF system and exhaust lines to fix the vehicle however, the failure persisted. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 280,000.

Filed Jul 16, 2019 · Engine · 47,500 miles · CA

The chevy AC compressor bolt broke before 48k miles while driving on a paved city street in san diego. This failure caused the condenser to also fail and both parts have to be replaced. The total bill for repairs is $2,150.31 and the copy of the invoices is submitted (exclude the fuel filter replacement costs as that was regular maintenance work). The AC compressor failure is caused by cheap parts and is a common problem for all gm products before 100k miles. This should be a recall item as it is a safety risk if the failure result in a vehicle fire or drive belt failure (stranded vehicle) or a loss of focus while driving.

Filed Jun 19, 2019 · Engine · GA

My def tank heater went out so puts check engine light on. Was told by dealership it was fine to drive while parts were ordered. Said would a few weeks since 200,000 was on back order. Have had three friend with same issue same year model gm one was gmc other two was chevrolet

Filed Feb 27, 2019 · Electrical, Engine · 40,000 miles · GA · fire

Truck was parked and turned off, a fire started under hood causing damage to engine compartment, usaa insurance notified, truck taken to master gmc in augusta ga, around 40,000 miles and all stock no modifications made