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  1. Duramax First Generation: 2001-2004 (LB7)
    Yes i know,i know, dont even start with the "YOU SHOULD REPLACE THE HG!" Comments.. Trust me i REALLY FREAKING ALREADY KNOW..Anyways.. I know this has been asked here but i havent seen anyone whos tried it on their lb7 come forth..i used the blue devil years ago on a gasser yota and it worked...
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