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#help 2500hd allison allison 1000 bad injectors banks biodiesel brakes chevrolet silverado 2500 chevy cognito coolant coolant leak cp3 cp4 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 overheating 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. Transmission Shop
    Hello Everyone, I have a 07 Duramax CCLB 208k Bone stock. Started seeing “range shift inhibited” a few times, shifted from D to P, back to D no issues. Driving Monday heard spinning whining gear mesh /unmesh sound. Neutral only. Trans fluid good, religiously change fluid /filter. I have internal...
    allison1000 nsbu switch transfer case
  2. 911 Problems Forum
    I have a 2005 LLY, 4WD, Crew Cab with a 5 speed allison. The gear selector at the column was acting up, not going into park for several seconds, and would not go into 1st or 2nd at all. I changed the NSBU switch thinking it would fix my problems. It fixed the slow park engagement, but it still...
    cable nsbu switch selector valves won't go into gear
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