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Re: GM Duramax /Allison Pickup- Knocking
Posted to HD/Fleet Forum on 6/13/2003

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June 13, 2003

Hi Damon,

We've encountered this issue not only on 2001 models but several on 2002 models and two on 2003 models. We've made it a shop practice to buff the threads on the conv bolts ... Login to read more.