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  1. #1

    Angry Need Help With Fuel Problem on 04" GMC Yukon

    I have a 2004 yukon xl flex fuel. I'm having fuel pressure problems. I am only getting 50 psi at key turn only and 40 at engine running. I change the fuel pump, fuel filter and fuel regulator. My yukon will not start at the first complete key turn from a cold start, but it will start the second time and as long as I don't let it off long it will start first crank. I tested the pressure yesterday and at turn key it goes to 50 psi,and quickly drop off to 0 psi. Can someone help me please

  2. #2

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    *****Thread Moved*****
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    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










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