• If you currently own, previously owned or want to own an Avalanche, we welcome you to become a member today. Membership is FREE, register now!

Cannot remove my fuel filter on my 02 Z71

Cjbrown911975

New Member
Joined
Sep 1, 2019
Messages
5
So I'm changing my fuel filter on my 02 Z71 and I can't get the lines loose at all, I've used PB Blaster and even a wire brush around it to knock some of the rust off. I honestly think it's the factory and thats my problem. When I try the line starts twisting and I'm worried its going to break the line or snap it out the fuel pump. Any suggestions would be greatly appreciated.
 
you are using 2 wrenches right?
one to hold filter so lines do not twist
and the other on the tubing nut.
 
you are using 2 wrenches right?
one to hold filter so lines do not twist
and the other on the tubing nut.
Sadly, that doesn't always work here in the rust belt. The line itself can fuse to the line nut and getting one to spin without the other is an exercise in futility.

I'd keep hitting with round after round of Free All. You may need to resolve yourself to new lines. Mine became a fountain after I replaced my fuel pump. The shop I took it too was able to patch into the line a bit higher up the frame. It doesn't get as much road spray there and can be cleaned up for a patch. Good luck.
 
Move south then replace?
 
I don't know if you already have them but for fuel lines and brake lines you should be using flare nut wrenches. They will grip like a box wrench and are less likely to round off the fittings which are usually made from a softer material..

 
Move south then replace?
But then where's the challenge? >:D

I don't know if you already have them but for fuel lines and brake lines you should be using flare nut wrenches. They will grip like a box wrench and are less likely to round off the fittings which are usually made from a softer material..

Agree with using flare nut wrenches, but that won't help with the issue of the line fusing to the nut. The nut will spin out of the fuel filter but the line itself wants to spin and twist with the nut. Rust belt hack mechanic 101 :laugh:
 
what happens in course Rust belt hack mechanic 102?
 
I got rid of the stock fuel filter on mine a long time ago. Those sh!ty things have been on GM trucks for a long time and I got tied of trying to remove it and fuel running down my arm and neck, so every truck I've had gets I replaced with a Perma-Cool spin on Fuel filter/water separator. Just add fuel line adapters, mount the adapter and filter changes are 5 minutes with zero fuel spills and service intervals of 15k-25k..

You can do it cheaper if you shop the fittings, I used braided steel lines but I already had most of the pieces leftover from other projects at the time I did changed it over..





 
what happens in course Rust belt hack mechanic 102?
That's where you learn to chug Bacardi 151 by the pint while simultaneously learning how to field dress the burns from overheated bolts and sewing your own stiches to avoid the medical cost of the ER. It's also where you learn which priest to go to for confession for all the things that flow out of your mouth. :laugh:
 
Again Move South we do not need excuse to drink the bacardi.... we just throw a party or parad and drink some MOJITOs!
 
Again Move South we do not need excuse to drink the bacardi.... we just throw a party or parad and drink some MOJITOs!

It's always 5:00 somewhere.
 
How about we send all the Snowflakes who are afraid do drive in the white stuff down south instead? Then we can quit throwing down the salt, toss on the snow tires and start enjoying non-corrosive donuts in local parking lots.
:drive:

They probably aren't going to like our humidity and tornadoes much, either.

:ROFLMAO:
 
How about we send all the Snowflakes who are afraid do drive in the white stuff down south instead? Then we can quit throwing down the salt, toss on the snow tires and start enjoying non-corrosive donuts in local parking lots.
:drive:

They probably aren't going to like our humidity and tornadoes much, either.

:ROFLMAO:

Man Illinois must just be super lucky!! we seem to have plenty of snowflakes that are afraid to drive in the snow, PLUS no shortage of corrosive salt that gets spread EVERYWHERE, AND we get humidity and tornadoes in the summer!! (although less on both than our friends to the south)
 
Man Illinois must just be super lucky!! we seem to have plenty of snowflakes that are afraid to drive in the snow, PLUS no shortage of corrosive salt that gets spread EVERYWHERE, AND we get humidity and tornadoes in the summer!! (although less on both than our friends to the south)
Same here in Cincinnati. I'm that lunatic that will sit on the porch during tornado warnings (watching the radar of course to make sure it's not coming at me).

The humidity is just nuts. As soon as I open the door to let the dogs out it seems my feet get wet.

Anyway, since I managed to threadjack this post, back to the original question. Round after round of penetrating oil with a high probability you will have to patch the lines. I do like that setup @Randy posted.
 
How about we send all the Snowflakes who are afraid do drive in the white stuff down south instead? Then we can quit throwing down the salt, toss on the snow tires and start enjoying non-corrosive donuts in local parking lots.
:drive:
Half of them are too afraid to drive on a perfectly dry, salted, and plowed road. I love the days where they've only truly plowed one lane on the highway while the others are simply traffic-plowed. There's always a number of people that hog that lane only to go like, 40 mph. So you have to drive around them to get anywhere any time soon.

Of course, atleast some of these are driving reasonable.. considering they buy the cheapest summer tires and run them year round or are driving on bald tires. Frankly, i sometimes wish we had the snow tire restrictions of some other states. But then again id rather not have more government involvement in things. When I see pickups in the ditch on my way to work (90% of vehicles in the ditch are large SUV's and pickups) I just sorta file it under natural selection.
 
I got rid of the stock fuel filter on mine a long time ago. Those sh!ty things have been on GM trucks for a long time and I got tied of trying to remove it and fuel running down my arm and neck, so every truck I've had gets I replaced with a Perma-Cool spin on Fuel filter/water separator. Just add fuel line adapters, mount the adapter and filter changes are 5 minutes with zero fuel spills and service intervals of 15k-25k..

You can do it cheaper if you shop the fittings, I used braided steel lines but I already had most of the pieces leftover from other projects at the time I did changed it over..





So we are well over a month into this project, and my husband is spraying more pb blaster, my idea was siphon the gas out, and cut the line by the fuel filter on both sides, add quick connects to the lines and new filter and like magic done. My husband on the other hand with his trusty pb blaster says it cost too much, honestly $60 in gas every 3 days is costing way more. So any other suggestions please? Would it be easier if he disconnected the lines at the tank and wherever it runs to up front and then trying to remove the filter??
 
Cut line time and re-flare and add extension in its place as you could live without it like they do in 2003 and beyond.
Remember this is under pressure at least 60PSI but figure you want to be twice that hence why they use hard lines.

Rubber hose and clamp might not work so well in long run.

or just leave it - IF engine runs good as they take forever to get clogged and restrict flow.
 
Back
Top