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  1. 06-07 LBZ & LLY Duramax Powertrain
    I am a been on here but I have browsed thru before to answer my questions. Anyways on with my issue... Last week I was towing my new 5th wheel RV on it's first trip on a 5hr haul through mild mountainous terrain and about midway while in on a moderate but long up grade pull I noticed that I was...
  2. 01-04.5 LB7 Duramax Powertrain
    -------------------------------------------------------------------------------- My LB7 started losing power last week. It feels like the turbo is not working. There are no codes, no black smoke and it starts and runs like it always did but with less power. It now has about the same power as my...
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