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Discussion Starter · #1 ·
is it too hard to change the fuel filter on an 02' lb7 myself??:confused: ?
 

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No you just need a large filter wrench with a swivle handle on it to get it loose most of the time. there is a little plug on the bottom you need to unplug befor you get the wrensh on though. After that you might want to put a plastic bag over it from the bottom to catch any leaking fuel while you unscrew it!
 

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like 05 said, this is pretty easy after you get it done the first time.... Change the filter after your truck has been sitting for a couple hours so the pressure from the fuel pump is not still "in the lines" you should be able to change this by yourself with your truck on the ground in about 10 minutes top without a drop of Diesel getting on you. *again..let the truck sit for a couple hours unless you like to smell like diesel :D* there is a 2 wire plug on the bottom of your filter that have about a 5-8" wire on it that you need to disconnect. Then use a filter filter wrench to loosen the filter, if you cant get it by hand. after you get it loose, you need to come up with an escape plan... IT has been said, and proven that this can very from 2 identical trucks... BUT you have a couple options... if you can tweak your AC line over a little bit to get the filter out through the top, this is the easiest. IF there is no way you can tweak it over enough for clearance, some guys take their battery out and go that way, and the other way is to remove the right side inner fender.. once i figured out to bend my ac line a little, its a breeze now. and PLEASE don't go buy the cheapest filter you can, try to stay with a trustworthy brand like WIX or Fleetguard... i change mine ever 4-5K with oil changes. Duramax injection pumps are VERY sensitive to dirty fuel and a clogged filter restricting fuel intake. The first time could be a little frustrating, but its like riding a bike after that brother! :)
 

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rubber grommet

not to hard at all, just make sure when you take your old filter off you make sure the rubber grommet comes off with it. sometimes they can stay on the filter base and make things a little difficult to put the new one on. other than that sounds like the guys have about explained it. good luck
 

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Discussion Starter · #5 ·
cool thanks for the heads up and step by step directions!!!!:rockin
 

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like 05 said, this is pretty easy after you get it done the first time.... Change the filter after your truck has been sitting for a couple hours so the pressure from the fuel pump is not still "in the lines" you should be able to change this by yourself with your truck on the ground in about 10 minutes top without a drop of Diesel getting on you. *again..let the truck sit for a couple hours unless you like to smell like diesel :D* there is a 2 wire plug on the bottom of your filter that have about a 5-8" wire on it that you need to disconnect. Then use a filter filter wrench to loosen the filter, if you cant get it by hand. after you get it loose, you need to come up with an escape plan... IT has been said, and proven that this can very from 2 identical trucks... BUT you have a couple options... if you can tweak your AC line over a little bit to get the filter out through the top, this is the easiest. IF there is no way you can tweak it over enough for clearance, some guys take their battery out and go that way, and the other way is to remove the right side inner fender.. once i figured out to bend my ac line a little, its a breeze now. and PLEASE don't go buy the cheapest filter you can, try to stay with a trustworthy brand like WIX or Fleetguard... i change mine ever 4-5K with oil changes. Duramax injection pumps are VERY sensitive to dirty fuel and a clogged filter restricting fuel intake. The first time could be a little frustrating, but its like riding a bike after that brother! :)
Read your instructions on changing fuel filters and is pretty much on par with what I've been told in passing conversations. Since I have a instrument cluster that tell me how much life is left on my filters, how does one go around to resetting the readings after you change the filter???

1326_bob
 

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It is very easy and damn near fool proof to change. Dont forget to prime it though, that seems to be the step most forget. Make sure to use the newest fuel filter from GM, there have been advancements in filtration technology and all the new GM trucks come with them. They also last up to twice as long as older paper styles so you are actually saving money going with the best filter on the market, period.

New GM Fuel Filter
 

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Dont forget to prime the new filter before trying to start your truck. You can find the instructions in your manuel or find a thread on here that tells you how.
 

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Read your instructions on changing fuel filters and is pretty much on par with what I've been told in passing conversations. Since I have a instrument cluster that tell me how much life is left on my filters, how does one go around to resetting the readings after you change the filter???

1326_bob
OMG look how old that post is.. haha

hit the I on the steering wheel till you get the fuel % up on the DIC and hold the arrow down till it resets...

I think? :help
 

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If you want to make changing the fuel filter easier get a Fuel Filter access panel and never have to pull the fender well again. They are cheap and speed up the filter change over going from the top especially on an LMM new Body style.

Order either the Wix 33960 or a Racor Coalescer filter (PFF50216) with the access panel and get the best deal on the filter you can find.

Shoot me a PM or click the link in my sig fopr the access panel.
 

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is it too hard to change the fuel filter on an 02' lb7 myself??:confused: ?
Pickups don't have a lift pump from the tank to the filter, unless you added one. As far as waiting several hours, not necessary because the filter is not under pressure. BUT, the cab-chasis does have a pump, so exercise caution there. If you loose the prime, sometimes you can crank for awhile but it only takes a few minutes to pressurize the tank slightly with an air hose using some rags to help seal. When you have fuel at the bleeder, you're done. If you loose the prime completely, you will NEVER get it started by just cranking, you will have to pressurize past the filter to the low pressure schrader valve (black cap) on the left of the alternator. This will require 2 people, one to pressurize and the other to depress the schrader. Always fill the new filter with fresh, clean fuel before installing...saves a lot of priming.
 

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On my LMM do I have to prime after I change the fuel filter or is it a self prime?
 

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How do I prime the duel filter on an 02????
 

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dude this thread is 3 years old.!!!!!!
look at passenger side under hood near battery,that thing on top where the filter screws in IS THE primer,it is made to be pushes with your hand palm,but first find the black plastic screw on top of the fuel filter assembly and loosen a few turns.Pump the primer with your hand,push it down and let it return up fully,repeat until you have a steady stream of fuel coming out of that hole.When you do quickly close the bleeder screw and start your truck.It may take up to 25 pumps to get it primed and you may have to do it twice..
Now some guys take out a fender well or their battery but I never had to,they say it varies by truck......
 

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dude this thread is 3 years old.!!!!!!
look at passenger side under hood near battery,that thing on top where the filter screws in IS THE primer,it is made to be pushes with your hand palm,but first find the black plastic screw on top of the fuel filter assembly and loosen a few turns.Pump the primer with your hand,push it down and let it return up fully,repeat until you have a steady stream of fuel coming out of that hole.When you do quickly close the bleeder screw and start your truck.It may take up to 25 pumps to get it primed and you may have to do it twice..
Now some guys take out a fender well or their battery but I never had to,they say it varies by truck......
just did mine, didnt have to take anything out, except the intake tube for convenience. And if you dont have an oil filter wrench like I didnt, can always use the screwdriver method:rof Just make absolutely sure you bought the right filter before you do that
 

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Thanks...!
 

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just did mine, didnt have to take anything out, except the intake tube for convenience. And if you dont have an oil filter wrench like I didnt, can always use the screwdriver method:rof Just make absolutely sure you bought the right filter before you do that
I think you may be confused.That was for a stuck oil filter,rather than a stuck fuel filter........
 
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