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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 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 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 tow towing trans transfer case transmision transmission transmission problems tune tuner tuning turbo wheels white smoke will not start wiring
  1. General Discussion
    Hi all, I just picked up a new webasto coolant heater and 7 day timer for my 2020 GMC AT4HD. Has anyone done this install on their 2020+ L5P’s? Looking for any insight on whether I should get it professionally installed or do it myself as a DIYer. The cost of labour is practically the same...
    2020 coolant gmc heater webasto
  2. General Discussion
    Does anyone know if a air intake is worth it for better gas mileage and power? I have a 2020 Silverado 2500 diesel.
    2020 air intake diesel
  3. 911 Problems Forum
    2020 duramax l5p ring when accelerating on and off. 2020 l5p ring/squeak
    2020 2020 duramax l5p problems squeaking
  4. Parts For Sale
    I have a 2020 Chevy 2500 long box original diesel tank for sale 14.156 miles on the tank. Nothing wrong with it, too out the original and installed a Titan tank. Have ran Hot Shot's EDT in every fuel tank since 6000 miles. $200 or best offer. Will work with buyers for shipping. Located in...
    2020 2500
  5. Drivetrain
    There is a clicking noise in the steering wheel that is easily reproducible. Dealership replaced some shaft in steering column, drove away with the click. Have reported problem problem to dealership multiple times. See my video: Does anyone else have this problem? --Mark
    2020 gmc steering wheel click
  6. 2020+ LM2 Duramax Powertrain
    My son-in-law bought a brand new Chevy 3500 CC Long box two weeks ago. exactly one week after he got it (1000 miles on vehicle) it started making horrific knocking noises then shut off and would not start. Towed to dealer and they could figure it out (no codes) they drained all fuel and...
    2020 chevy duramax codes
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