Fuel System
Check engine light, sensors (includes O2 or oxygen sensor), emission control devices (includes EGR), engine computer, engine computer, fuel cap, fuel gauge/sender, fuel injection system, fuel pump, fuel leaks, stalling or hesitation.
What Owners Say
"Every once in a while I get a check engine light and it indicates lean condition. I erase the code and it reappears sometimes after idling a long time"
Anonymous, ID (2008 Chevrolet Silverado 2500HD LT 6.0-L V8)"Injectors failed by allowing too much fuel to pass through their "bypass" system and preventing the high pressure fuel pump from creating adequate pressure. All 8 injectors needed to replaced for over $5,000. CHEVROLET claims this is due to poor fuel filtering, which is rubbish as I have only used OEM AC Delco fuel filters and I have changed them before the truck's computer asked me to. This is a known issue with the CHEVROLET Duramax LMM engine, and it's an expensive repair."
Anonymous, MN (2008 Chevrolet Silverado 2500HD LTZ 6.6-L V8 diesel)"I don't recall exactly what the bottom line problem was, but the symptom was that while pulling a load, especially up a hill, the engine light came on, then the engine power decreased down to practically nothing. Could only go about 5 mph. Also, the 'change fuel filter' indicator said it needed to be changed (even though we had just changed it). We discovered that we could stop, reset the fuel filter indicator, wait about 10 minutes, and then we could keep going. We also discovered that as long as we kept the RPM under 2500, it wouldn't do that. We took it to the dealer 3 times and they were unable to determine what the problem was at first, because they were unable to recreate it. The first time, they just changed the fuel filter. The second time was a different dealer, and he just said he could not recreate it. After the 3rd time that it happened, we were able to more fully describe everything that we did to temporarily 'fix' the problem, and told them they just had to figure it out, period. They were finally able to fix it, but I just don't remember exactly what it was."
Loretta L., ID (2008 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"Failure"
Anonymous, TX (2008 Chevrolet Silverado 2500HD LT 6.0-L V8)"Fuel pump failed. Replacement also failed"
Anonymous, TX (2008 Chevrolet Silverado 2500HD LT 6.0-L V8)"This a diesel truck and exhaust sensors in the rear tail pipe that could no self clean and had to be replaced. Very expensive for two"
Anonymous, MA (2008 Chevrolet Silverado 2500HD LT 6.6-L V8 diesel)"Fuel return vacuum sensor failed and I replaced it."
Anonymous, ID (2008 Chevrolet Silverado 2500HD LT 6.0-L V8)
"Last summer the truck started flipping to "limp home" mode when I was pulling 10,000 pounds of horse trailer and using the A/C. One mechanic changed the fuel filter, didn't help. Dealer said that impurities in the diesel fuel had scoured out the insides of the fuel injectors. $7,000 to get a rebuilt one installed"
Sharon P., MD (2008 Chevrolet Silverado 2500HD 6.6-L V8 diesel)