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  1. Duramax Second Generation: 2004.5-2005 (LLY)
    I bought a 2005 Lly duramax a few months ago. When I bought it there was a bad transmission in it. I swapped it out and everything seemed fine. Shortly after I swapped out the water pump and now that its back together I have little to no throttle response. I can floor it and the rpms will go up...
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