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Re: 07 GMC 3500 Duramax fuel pump location?
Posted to HD/Fleet Forum on 6/12/2018 7 Replies

I would start by installing a gauge on the service port at the front of the engine and do one of two tests. I would crank the engine and see if I had 1 to 5 in HG on the gauge. With the engine idling it should be about 1 to 3 in HG. Or I would install the gaug... Login to read more.

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