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View Full Version : Need Help! 2003 Duramax Specific



Defender
12-12-2017, 13:15
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.

DmaxMaverick
12-12-2017, 18:22
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.

Defender
12-12-2017, 18:39
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.

DmaxMaverick
12-12-2017, 19:12
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.

Defender
12-12-2017, 20:09
Thanks again. Confidence is growing, lol.

Kennedy
12-14-2017, 08:40
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.;)

Defender
12-14-2017, 09:14
Thanks sir. My issue is simply getting to the mounting bolts. Haven't tackled it yet. Waiting for a part ....

rapidoxidationman
12-14-2017, 16:37
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.