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WESTTC

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    2003 Silverado 1500HD 2WD

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  1. I just had a similar problem. Replaced fuel filter, plugs and wires, with no change. Per the dealer, the check valve was bad, which made sense with what I was seeing in fuel pressure readings: initial key on gave zero pressure or full (~ 50 psi) pressure but quickly dropping afterwards. FPR was still good. Replaced fuel pump module (which I assume includes valve) and truck starts fine. I agree on FPR check - pull the vacuum hose and look for fuel.
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