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Re: 07 GMC 3500 Duramax fuel pump location?
Posted to HD/Fleet Forum on 6/12/2018 1 Reply

LMM has gear driven high pressure pump with a small gear pump on the back of it that pulls fuel from the tank, everything to the pump is under vacuum. Common areas for air getting sucked in are the crimps on the fuel lines along the frame and the filter housin... Login to read more.

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