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Thread: Need Help! 2003 Duramax Specific

  1. #1
    Join Date
    Apr 2011
    Posts
    33

    Default Need Help! 2003 Duramax Specific

    Trying to R & R the fuel filter head on my 2003. I mentioned 2003 specific because it seem the later models don't have the same issue I am running into. How in the world do I get access to the mounting bolts with all the wiring on top of the filter head? Are those wiring brackets removable?? Any help will be greatly appreciated. Please see attached photo.
    Attached Images Attached Images

  2. #2
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,573

    Arrow

    Just disconnect the electrical connector from the vacuum solenoid, remove the mounting bolt, and swing it out of your way (suspended by the lines, it will be flexible). You could remove it completely, but it isn't necessary. It should be simple from there.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  3. #3
    Join Date
    Apr 2011
    Posts
    33

    Default

    Thanks DMax. I am mechanically challenged so please have patience. If you looked at my pic, are you talking about the prominent bolt near center of the pic? Appreciate any more detail you can provide. Thanks.

  4. #4
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,573

    Arrow

    Yes, the bolt at the upper/center of the pic. It secures the metal bracket holding the solenoid. Disconnect the electrical connector first, and move it out of the way. The connector disconnects closest to the solenoid, not nearest the wires entering the connector. Look for the locking tab, and pry it a little with a small screwdriver or suitable tool, then wiggle the connector off.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  5. #5
    Join Date
    Apr 2011
    Posts
    33

    Default

    Thanks again. Confidence is growing, lol.

  6. #6
    Join Date
    Mar 2000
    Location
    Loyal WI US
    Posts
    10,792

    Default

    It is very simple to "rebuild" these filter heads by simply replacing the handful of orings that seal them.

    P.S. Add a lift pump and these heads seldom if ever leak.
    Kennedy Diesel-owner
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  7. #7
    Join Date
    Apr 2011
    Posts
    33

    Default

    Thanks sir. My issue is simply getting to the mounting bolts. Haven't tackled it yet. Waiting for a part ....

  8. #8
    Join Date
    Dec 2002
    Location
    Teton Valley, Idaho
    Posts
    1,873

    Default

    Depending on how you value your time, simply replacing the whole fuel filter head will do two things:
    1) guarantee no leaks
    2) go considerably quicker as a repair

    and you get a new filter cartridge to boot.



    Just another option.

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