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Fuel Pump ?

This is a discussion on Fuel Pump ? within the General Help forums, part of the LSx Technical Help Section category; Hello Everyone .. My truck died today at lunch and I think that it is the fuel pump ... I ...

  1. #1
    Junior Member
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    Blue
    2007 Silverado

    Fuel Pump ?

    Hello Everyone ..

    My truck died today at lunch and I think that it is the fuel pump ... I have 120k on the truck and the pump is original equipment. Any advivce on how to comfirm that it is my fuel pump?

    Thanks,

  2. #2
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    black
    2001 z28

    fuel pressure gauge from harbor freight.

  3. #3
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    Blue
    2007 Silverado

    What should the fuel pressue be, and if low, how will I know that it is the pump and not the regulator?

  4. #4
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    black
    2001 z28

    55-60psi for the pressure. i thought the 02 or 03+ trucks had the returnless fuel system, ie regulator built into the fp assembly.

  5. #5
    Member 180ls1's Avatar
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    1998 Firebird Formula WS6

    you can pull part of the intake off and spary starting fluid in the throttle body and see if it will start then. then you know it should be a fuel problem.

  6. #6
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    2007 Silverado

    Fuel Pump ?

    Here is an update ... I purchased a fuel pressure gauge and checked the pressue at the fuel rail ... it varied from 5 to 10 psi. I pulled the tank and removed the pump. I will pick up a new pump today and install.

    Stay tuned ...

  7. #7
    Member
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    black
    2001 z28

    5-10psi running?

  8. #8
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    2007 Silverado

    Fuel Pump ?

    It was sputtering ... not sure if I would say running.

  9. #9
    Senior Member bigrondownhiller's Avatar
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    1996 Camaro Z28 vert

    does it have a regulator? did you check the fuel filter?

  10. #10
    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    isn't it still under warranty?? An 07 shouldn't be having these types of problems yet.

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