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  1. Duramax First Generation: 2001-2004 (LB7)
    Truck has been sitting for a few years because of bad injectors, so recently I decided to get her going. I installed new SAC45 injectors. But couldn't get vehicle to start and it kept throwing a anti theft code. And security light. So I decided to take it to a shop and they said my computer went...
  2. Duramax Second Generation: 2004.5-2005 (LLY)
    Just downloaded my codes from my truck and I have the P0089 FPR Performance in history, I recently changed the fuel filters and I have a lift pump on my truck. This is the first time I have seen this code what parameters set it specifically? I have had the lift pump for almost 2 years, and like...
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