Fuel filter change 5.3 2004 Flex fuel.

Discussion in 'Tech Info' started by Jimmy John, Nov 23, 2016.

  1. mattt

    mattt Full Access Member

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    Got it changed. I ended up cutting the filter with a Dewalt sawzall....not too difficult once me and the sawzall were under there. Strange thing.....black nastiness came out of the filter when I dumped it out, but when I blew thru the old filter there was virtually no resistance from the filter being plugged. Everyone else get the black fuel coming out even though the filter was not plugged?

    I did not use the white plastic clip that came with the replacement filter. The spring clip in the hose end holds the filter in place. While the outlet fitting on the replacement filter is longer than the old filter I took out, it STILL appears to be too short to get the standard fuel & A/C line release ring tools in there. Probably won't have to worrry about it next time around since I'll be moved on from this Tahoe. Thanks for the help in this thread.
     
  2. adriver

    adriver Full Access Member

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    Am I missing something, or is cutting the fuel filter with an electric saw blade a really bad idea? Even if you pull the fuse, and crank it, there is still going to be fuel in the filter and vapor right? Couldn't doing this ignite?
     
  3. mizzouguy

    mizzouguy Full Access Member

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    I use metal snips....i would for sure not use power tools near fuel vapor.
     
  4. CountryBoy19

    CountryBoy19 Full Access Member

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    Bumping this with a question...

    I thought all Z-vin engines (flex-fuel) had the fuel filter for the 00-06 model years. I was under mine the other day curiously looking around but couldn't find the filter. I know I'm looking in the right place because the ABS module was right there just like in this pictures in this thread... but no fuel filter...

    And I'm certain I have the Z engine, it's on my build-sheet from the dealer and its on the RPO list in the glove-box.
     
  5. mattt

    mattt Full Access Member

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    What is the RPO code in your glove box? That's really strange that you have a flex fuel vehicle but not external fuel filter.
     
  6. CountryBoy19

    CountryBoy19 Full Access Member

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    L59, which is the flex-fuel engine...
     

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