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lb7 prime
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  1. Duramax First Generation: 2001-2004 (LB7)
    I’m lost here, 04 lb7 replaced 2 and 4 due to black smoke and both ranging from 6.2-7.0 in the balance rates. Everything went as smoothly as you could expect with this job. Put everything back together went to prime pumped and pumped. My hand and shoulder are literally sore from pumping for hour...
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