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#help 2500hd allison allison 1000 bad injectors banks biodiesel brakes chevrolet silverado 2500 chevy cognito coolant coolant leak cp3 cp4 crank but no start def deleted denali diesel diesel fuel 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 engine smokes 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 leak leaking led pods lift limp mode lly lly duramax lly durmax lml lml duramax lmm lmm duramax no start noise oil oil pressure p0087 p0700 powertrain ppe programmer reduced power rims smoke steering suspension tcm tires tow towing trans transfer case transmision transmission transmission problems tune tuner tuning turbo wheels white smoke will not start wiring
  1. General Discussion
    Hey guys so i have a 2012 gmc duramax slt, i have 72k miles on it. Its deleted and tuned 100hp, werlic custom air intake. New aftermarket tire rods super good quality. Over time this sound started coming on its a werid knocking sound. It only happens in the front of my vehicle, it only happens...
    2012 duramax duramax knocking lml
  2. 11-16 LML Duramax Powertrain
    My Lml is throwing the P0137 code which according to my diagnostic tool is Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 2). I was under the impression that duramax didn't use oxygen sensors so Im at a total loss. Does anyone have any ideas at what the problem is and how to fix it...
    2012 duramax help p0137
  3. 2011-2016 (Non Powertrain)
    Hi All New to the forum (even though i created a profile several years ago, just never used it). Have a question about the grill on my 2012 Chevrolet Silverado 2500hd LT. I am looking for a specific grille but can't seem to find it. I am looking for one similar to the pictures below. I bought...
    2012 duramax grille lml

  4. Cranks but won't fire

    Bought this truck 2 weeks ago, ran perfect. Code P0087 popped up for fuel rail/system - too low. I dropped the performance level on the tuner(mini maxx). After that it would crank but not fire. After a while it would crank crank crank then fire up running rough. I replaced fuel filter and head...
    2012 duramax
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