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#help allison allison 1000 bad injectors banks battery biodiesel brakes check engine light chevy codes coolant coolant leak cp3 cp4 crank but no start crank no start def deleted denali diesel diesel fuel diode dynamics dpf dpf delete drivetrain dtc error codes dually duramax duramax 2500hd duramax 6.6 ecm edge efi efi live egr egr delete electrical electrical problems engine exhaust for sale fuel fuel additives discussion fuel filter fuel mileage fuel system problems gmc head gasket help injector injectors intake knock knocking l5p lb7 lbz lbz duramax leak leaking led pods lift lift pump limp mode lly lly duramax lly durmax lml lml duramax lmm lmm duramax no start noise oil p0087 p0700 ppe reduced power rims silverado smoke steering suspension swap tcm tires towing transfer case transmision transmission transmission problems tune tuner tuning turbo wheels white smoke will not start wiring
  1. L5P TSB (service bulletins, recalls, updates)
    So, I've had my 2018 in and out of the dealer for the last 2 months. First, it was DEF Heater 2 failing. Then it was DEF heater 1 failing. After that, it was the NOX sensor. Now, it's throwing another code P20B9 (reductant heater 1 control circuit). Which has been replaced TWICE now. I feel...
    def emission lp5
  2. Alternative Fuels Diesel Additives Lubricants
    It has come up quite often, especially with the rumors of a DEF shortage now lurking. Figured I would explain this to cover the 30k repetitive questions that have come up First and foremost, regardless of the pretty packaging and nice font that the companies use, GM applications DO NOT work...
    def exhaust system def fluid dpf regen emission nox
  3. Looking For/ Wanting To Buy
    Apparently the jackwagon that owned this truck before me cut the cat off. Does anyone have one laying around? (Doesn't need to be functional BTW, just pass a visual check.)
    catalytic converter emission exhaust
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