Question about 1996 GMC Sierra

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96 gmc seaire 1500 5.7 loss of power hard start changed fule pump 4 yrs ago changed fule filter 2 weeks ago falls on face when trying hard excelleration have to pour small amount of fuel into throtel body to start

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  • Mike Butler
    Mike Butler Apr 09, 2011

    Have you had fuel pressure tested? Tried cleaning throttle body with Throttle body spray cleaner? Spray clean mass air flow sensor with electrical spray cleaner?

  • jim miller Apr 09, 2011

    can auto zone do a fuel pressure check and what is the correct pressure replaced bad fuel line what next

  • jim miller Apr 09, 2011

    not throtol boby gasket new heads and throtal boby 6 months ago

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Sounds like you need to replace your throttle body. Maybe just the seal on the base. Really no way to check other then replace, But if you do replace make sure they change the gaskets along with it. Good luck to you, You may get a good one from a salvage yard to test it out,

Posted on Apr 09, 2011

  • Steve Christmas
    Steve Christmas Apr 09, 2011

    Mabe just some bad gas or water in tank, Maybe try a bottle of HEAT to pour into your tank to get rid of any moisture,

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