How to replace your fuel pump

Discussion in 'Tech Info' started by ravingmadman, Oct 1, 2009.

  1. m1n3r

    m1n3r TYF Newbie

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    couple differences from the 4 door and 2 door so far. Im at the point where i have the straps holding the tank completely off and the tank wont budge. I felt all around it and there is a big sticky seal on the front end of the tank. I loosened that my best. Im literally hanging on the tank and its not budging. I cant find any more bolts. Now im talking to myself. maybe its the gas i inhailed lol.
     
    Last edited: Mar 6, 2013
  2. crueeldude13

    crueeldude13 TYF Newbie

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    Hi folks long time lurker here. Finally doing major repairs to my yukon, crate engine, tires, wheels etc. I think I'm about to have to tackle this as well. When long idling or long trips around town my fuel pump starts a loud hum. I have a 1997 gmc yukon 4dr slt 4x4 5.7. I want to use oem parts, the only thing I can come up with is acdelco mu1609. Can anyone confirm? Also has anyone had any luck with an external fuel pump upgrade or can anyone post a link or pics to show where to cut the floor for an access panel in the 4dr models?
    Thanks!
     
  3. pvaldeben

    pvaldeben TYF Newbie

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    smell gas in rear driver side tire.....

    Been smelling fuel for about 2 weeks and finally took a look at the under carriage. No fuel drips but I saw fuel sweat that was damp to touch under the gas tank.

    The Tahoe does not have any issues with the fuel pump just that it leaks.

    Hope its just a fuel pump gas kit that can be replaced easily.

    I have to fix it since i'm sure its dangerous.

    Please let me know if anyone has tips for someone familiar with my situation.
     
  4. SunlitComet

    SunlitComet OBS Jedi-Do Good

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    drain the tank safely as quickly as possible and drop it for inspection.
     
  5. ccapehartusarmyINF.(ret)

    ccapehartusarmyINF.(ret) Full Access Member

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    i know this goes without saying but ill say it anyway because ive seen a couple knuckle heads nearly do it when i was at UTI
    make sure you run the gas tank dry before hand or siphon it out whatever
     
  6. SunlitComet

    SunlitComet OBS Jedi-Do Good

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    you can maybe rig up a pressure test fitting with a hose long enough to feed the tank of another car or two. will also need a relay by-passer to run the pump of battery till near empty. running the engine to do it may not work as the pressure drop out the port might let the injectors not have any to use. there is supposed to be a one wire connector in the bundle that feeds power to pump that factory uses to prime the entire system before first start.
     
  7. Holt50

    Holt50 Member

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    I think I just put on a2door pump in my 4 door. Works fine
     
  8. Holt50

    Holt50 Member

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    That's what I did I just replaced the pump
     

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