How to Change a Fuel Filter on a Duramax

This is a good step by step video on how to install a fuel filter on a Duramax. Thanks for watching and don't forget to subscribe!

[@Hakken1]

You literally have a video for everything on this truck. Very well presented too. Thanks man. Subscribed.

[@TruckMaster]

Thanks 👍

[@captainr.8882]

Great Video brother, I bought my very first 6.6 yesterday and although I have 30 years on gas engines, I am brand new to the diesel. Thank much.

[@hardrockboy85]

I worked at a shop for just under two years, and it’s a must to fill your new filter with fresh fuel. In most diesels, it can damage the fuel system and injectors by running it empty.

[@EpilepsyWarning]

He didnt run it empty, he pumped fuel into the filter before trying to start it.

[@markmoore4088]

Some say you should never prime your filter with unfiltered fuel.

[@Zurntle]

This video was posted 5 years ago and I’m using it today to change mine on my lbz! Amazing video as are all of the others on your channel

[@TruckMaster]

Thanks Jaden

[@jaywood8702]

Same

[@Cameleon_1258]

Thanks man. That was helpful! I’m going to change my own today.

[@TruckMaster]

Thanks

[@specops1903]

​I notice in a lot of forums old heads will say to fill up the filter with diesel or even atf but noticed there was no mention of that in this video. Could you elaborate if possible?

[@themalteseninja8307]

Stick with Ac delco! I bought an 04 duramax recently with 93k!! Decided to Change the filter and sensor. the previous owner had a car quest fuel filter installed with a suspect water sensor. After removing the old filter the rubber seal at the top of the filter looked completely different from the new original acdelco fuel filter. It had some weird looking rubber washer that forms against the stem when screwed in...It looked crushed and malformed on top of that. That’s the Last thing you need when the lb7 is known for injectors 😅 thanks Truck Master! Great video!

[@arkansascountryboy88]

I'd stick with acdelco or wix fuel filters , I have seen off brands come apart and trust me you don't want that .

[@darebear2438]

This video is still helping people, 7 years later. Thank you brotha 🤙🏼

[@msaegen118]

I did not intend to watch this video but it was informative. I would suggest that you might show the connectors that you removed to pull the inner fender. As well show the primer button which is obvious if you are familiar but then you probably don't need the video? And after changing everything it is standard to check to ensure that your filter is not leaking once you start things back up. Thank you for taking the time to help people with these videos!

[@williamwallace4879]

I m new to your channel, I subscribed great job!

[@TruckMaster]

Thanks

[@hectorbamaca5103]

Your Video always awesome man! Thank you so much for this Videos.

[@rtp3962]

If only we had politicians like you. Short, concise and no useless bs!

[@jackbrumley3038]

This guy is very helpful

[@Dirtymax3513]

I’m a new duramax owner (LB7) and mine died on me today at a stop sign. I’m assuming it’s the fuel filter because I’ve had the injectors replaced. I’ve ran FTC decarbonizer through it so I’m sure changing the filter is probably necessary.

[@MLGtroll365]

thanks for these videos dude, I feel better doing it myself rather than paying the shop

[@TruckMaster]

+TrollMaster300 no problem thanks for watching

[@MirandasAngel]

Always!

[@irvwayshort9566]

Hey brother. I am Army vet as well. First off, thank you for your service. Second, thank you for making these vids and really helpin out a first time duramax owner. I count on your videos for just about everything I done on my truck so far. Keep em comin! HOOOAAHHH!

[@TruckMaster]

Thanks brother

[@walkermeyer4324]

I second what IrvWay Short said, thanks for the vids truckmaster.

[@josephandrasy8657]

Did you fill fuel filter before installing?

[@martinfamilyband]

no

[@KILL3RCRACK3R]

Dealership wants 400$ to do this in my area. You saved me 350$. Thanks

[@TruckMaster]

$400 to change a filter? That’s insane

[@KILL3RCRACK3R]

@@TruckMaster That’s what I said. 30mins to do this for me since it was my first time ever, I saved like 10$ a minute practically doing it myself.

[@eyeorewolf]

Good video for process, personally I am replacing the sensor because it is a reed switch that can fail and allow water to pass to the injectors, at a minimum I would test it with a meter for open / closed circuit, replacing it runs about $17 on Amazon for OEM and that's pretty cheap insurance when you consider the cost of injector replacement. I am using an OEM filter because I know it has the correct micron rating, I have no idea what the micron rating or quality of a Value Craft filter is. I also bought the tool for removal and installation of the water sensor so I don't chew it up with vise-grips or channel locks. For lubricating the O-rings I'll use Mobil Delvac 15w40 same as I use in the crankcase. I will prime the filter with a small amount of diesel before installing to make final priming easier and finally I'm replacing the GM bleeder screw with an aluminum ORB type iFJF Billet Aluminum Air Bleeder Screw for $6.98 on Amazon. The sensor tool and bleeder are a one time purchase @ $17 and the filter and sensor ran $34.74 for both OEM. I'm not a diesel mechanic and I'm pretty new to diesel ownership so maybe this is overkill but I'd rather be safe then sorry. I bought my 06 LLY/LBZ to avoid the whole DPF-DEF debacle and I need it to be reliable and last because I don't want to ever be forced into the EPA garbage that can add thousands to initial and maintenance costs over the life of the truck. Thank you for the video showing the process you obviously have more diesel experience than I do.

[@TruckMaster]

Thanks

[@claytonwhitehawk2252]

Have you ever filled the filter with sea foam injector cleaner?

[@TruckMaster]

No I never tried

[@RunItDrew]

i love you THANK YOU SO MUCH

[@TruckMaster]

No problem

[@stephenratliff486]

Great videos! I have learned so much from watching them. I have one large but broad question that I hope isn't to much of a pain in the ass but here it goes: I bought a 2004 Chevy 2500 LB7 last year for my landscaping company. It seems to be in the very early stages of a head gasket problem. I have a little white smoke on start up and I sometimes have coolant coming out of my overflow due to over pressure. I have put 10000 miles on since I bought it and done an oil change as well as replaced the thermostats as well as the front drivers side driveshaft. What is the interval on fuel filter change along with transmission service/transfer case service? Also is there anything I can or should do to maintain the truck tru this season? This is my first diesel and I am not experienced with them. I can turn a wrench and use KZbin to get though a fix or maintenance but I don't know the the ins and outs of a diesel. Also I am not 100 percent sure it is a bad head gasket but from watching your video on buying a diesel a few signs are there. High pressure in the coolant system to be precise. Otherwise the truck has good power and doesn't overheat, also I have no check engine lights after 10000 miles. What are some things I can do to take care of the truck? Thank you for even reading all of this!

[@daveho4244]

White smoke from a diesel at startup could be injectors. If your coolant level is going down that could be a head gasket. I’m not a mechanic. Just a guy with a 300000 mile duramax. Good luck!

[@jackmydmax8792]

This is one quality vid short and simple!

[@jesseboyd2921]

Directions say to fill the filter with fresh fuel first. Also, the plastic screw is not a 13 mm. It's a 1/2.

[@gpinboy99]

Same thing

[@lorenkoska8934]

Mines a 13

[@markmoore4088]

1/2" = 12.7 mm Close enough to 13mm!

[@danielvigil1766]

Thank you for this video. Guys, he doesn't specifically mention to press down on the "button" to fill/pressurize the fuel filter before tightening the bleeder screw.

[@edwarddeleon431]

Got got my 1st duramax this was very helpful I ain’t trying to pay a shop for something I can just learn myself 😂

[@jphillips472]

Hey bro, thanks for all ur vids. On the fuel filter, once you open the bleeder, must you pump several times or just open and air will release right away? U went straight to air bubbles but I'm not sure how many pumps this may take.

[@TruckMaster]

Yes if it’s a empty filter you will be pumping a while

[@ishappens]

@@TruckMaster so do you recommend pouring some diesel fuel in that filter before installing it just like an oil filter? And thanks ahead of time for the videos!!!

[@nofyfb123]

Who the fuck came up with the bright idea to mount wiring to the wheel splash shield?!? Ah... gm...

[@dforr2981]

Quick and simple - just the way I needed it. Thank you!! I do have a question that has stumped lots of Diesel Mechanics - or so called Diesel Mechanics.... I have an 02 Duramax first year addition - sorry I don't remember the nomenclature - LBY7 or something like that. Anyway, I have an anti freeze leak some place - sorry guys it is not a busted head gasket - no white smoke or anything unnatural coming out of the exhaust - I did the combustion Leak test - and nothing. I am not getting any leaking on the ground. I'm at a loss. I did hear that it could be coming out of an O Ring in the Transmission and being evaporated that way but if you did fix that O Ring - sorry I don't remember the specifics - it is not a guarantee that it will fix the problem. I loose anti freeze over time and of course when I'm pulling the camper i loose it faster - that is why the Transmission O Ring sounded creditable. I am really open for suggestions. I have 250K on my duramax = and from what I understand I am only 1/2 into the life of this great truck. If you can offer any suggestions I'd be truly grateful. If you which to go into specifics and would prefer email [e-mail] Thanks in advance...

[@BruisersFraming]

Thank you for making it clear for us “new duramax” owners that before you put in the new filter , the seal from the old one can be left on the housing . I spent hours trying to figure out why it wasn’t threading.

[@jasonnieuwenhuis335]

Good video, right to the point. Some people want to make an 8 minute video into 22 minutes.

[@Benb05]

thanks for the video on my way to change a fuel filter on a friend 07 dmax right now he is new to this stuff

[@cheryljason9617]

Im about to go on a 12hr 42min trip and mine is getting changed today

[@allenwilliams2092]

So no pre filling the filter like on a skid loader or another equipment! My only concern nice! Thanks

[@TruckMaster]

No need to fill 👍

[@allenwilliams2092]

I found taking the iner fenderwell out was definitely the easiest way to get to it Also mine doesn't have the sensor on the bottom? Just a blank aluminum cap! Then the plastic bleeder broke i was able to get it out ans replaced it with a stainless bolt i cut to length and put a new o ring in works great! makes wonder if that was my problem all along it had to have been sucking air! My truck would go into limp mode say coming down a ramp to merge into traffic holding the throttle to the floor for more than 30 seconds it would then go into limp mode not over 2,000 RPMS!

[@allenwilliams2092]

Possibly other deep seeded issues not sure yet? According to a scan it has fuel delivery issues or something to do with fuel! I just got this truck a few months ago so this is all new to me! Its definitely not as simple as my old ford 7.3 diesel thats for sure!

[@allenwilliams2092]

I was curious about a few things too. Maybe since your video was able to help me out with simple fuel filter change you could possibly point me in the right direction with the inter fuel system replacement? I mean from the tank up it doesn't have stainless steel lines as im sure you know and i live in western Pennsylvania the rust belt hell for vehicles so my brake lines had to all be replaced do to the salt and rust and im sure the fuel lines are not far behind as they too are rusty to the point im worried about them! Preformance is my last concern at the moment as eventually i plan to pull the cab, bed down to the frame rails and do a complete rebuild and restoration on the inter truck but till that happens a couple years down the road i still need it to preform as my day to day for work! So any information would be greatly appreciated! Thanks again!

[@freedomuniversity]

How often do you change your filter?

[@TruckMaster]

Every other oil change or once a year

[@freedomuniversity]

@@TruckMaster Thanks, I believe in your oil change video you said you changed your oil about every 3k miles. So fuel filter about 6k then sounds like. Thanks for your videos. Been really helpful working on my LBZ.

[@Shatterdaze]

They have a nice brass replacement for the bleeder now 🙌

[@redcloudhunt7429]

Y does fuel drip from the lil drain plug on bottom of fuel sensor and I have it tight

[@thegoyimknow.]

Thanks for the informative videos! Used your video to do my fuel filter on my 04 lb7.

[@mikebellestri5245]

How on earth do I remove the hard plastic fender flares on the 2015 lml? I need to replace the fuel filter but it seems impossible with that wheel well cover in there.

[@justinguyer817]

Not to sure if you'd wanna do this to your nice new truck but on my dads old truck he cut the plastic enough to get access to the filter and put a piece of rubber over the hole. Then used some replacement plastic rivets to hold it in. Don't see it unless your looking for it

[@aliceyoung2639]

Where is the second fuel filter on the 2015 duramax 250

[@anthonyrodriguez2193]

How do you feel about the plastic fuel filter.... I don't like it

[@shawnwalsh4]

2:03 oil filter pretty standard

[@mxracer7100]

With the oil change and this fuel filter video, would everything parts wise be located in the same place as my 2001 gmc duramax? would you suggest I use that same engine Oil?

[@hoseamatthews4527]

DURAMAX howell use the manufacturer recommended oil type of course full synthetic will run a lot better but conventional works just fine in other engines I've heard.

[@streetbobaceyy8785]

I gotta say you are awesome at showing people how to do things on these trucks got my duramax about 6 months ago didn't know anyrhing about diesels worked on gas vehicles but never diesels just gotta say thanks for the guys like me

[@TruckMaster]

I appreciate it man

[@westerndiesel2948]

Sorry if this is unwelcome or unwanted (please delete if so...). There is now a kit available to relocate the fuel filter to a much more convenient location near the AC pump. Check it out: kzbin.info/www/bejne/aZW7YoehjcmZacU

[@GMT3190]

How to you reset the light on the cluster? Or does it go away itself?

[@czechyour66]

Hold down on your clear button longer than you do for the trip meter, should reset !

[@joekiddent]

my 06 once had a bad seal on the feul filter and i found some orange gunk(bad fuel??)... it was a super cold morning and the truck just turned over but would not start. i parked it with an empty tank on a hot afternoon so maybe the fuel system contracted or the pressure of it all getting super cold over night finished off the bad seal?? so i just ordered the whole assembly and it took like 10 minutes to install. thankfully the duramax fuel filter swap is a pretty easy job after you do it once. the primer sure makes things easy!! also myself and another friend with an lly rig have had to double check and reseat the O ring because if it's not perfectly in place it will suck air and you will notice it when you punch it!! so treat that O ring nice...

[@373federal]

What are the symptoms of a bad fuel filter?

[@garyhemphill1831]

After my truck runs for a while then it won't start any ideas

[@mikeross5627]

Awesome video dude. Thanks big time!

[@keithwrich419]

What brand and size filter wrench do you use?

[@MirandasAngel]

Great video, I have to put injectors in this motor and the bolts on the back of the engine are hard to reach so I pulled the inner fender to access them. This made getting to the filter easier as you stated. Just a couple of things, I noticed you used good quality tools so subscribed to your channel. However I don't think I would use a pair of vise grips on the sensor. I did like like the fact you used a socket on that bolt on the bleeder screw. Everyone used a screwdriver, your reasoning made good sound advice. my personal preference is lithium grease for the o rings but anything is a must, just like you stated. I will continue to consult your videos because you cover all types of trucks etc. and I work on anything people bring me. sometimes I need technical advice. Once again great video, used plain talk and did not talk to much tech talk so even a diy guy can understand. Thanks!

[@TruckMaster]

+Mirandas Angel awesome and I agree with you I shouldn't have used those vice grips but I appreciate the comment take it easy

[@captureonthego2436]

wish he was neighbor :)

[@RichRich06]

Maaaaaaaaaaaaaaaaaaan I can kiss you right now. I ain’t going to lie tho I forgot to pressure the system and truck wouldn’t start guess that’s what happens when you don’t let the remaining video play. Thanks Brotha

[@justingomez3364]

Question here I love your videos brother thank you how would you know when you need a new air filter besides the tuner letting you know how periodalcy would you change one and please send me a video im sure you have one on replacing a coolant resavoir and flushing the whole system 2006 6.6l lbz

[@chaseworkman530]

Everything went well on this except when I went to loosen that hex head next to the primer to release the air bubbles, the hex broke off and now won’t crank, could you tell me what needs to be done with it to fix it?

[@bptraveler6608]

After your video I installed a FASS 95gph lift pump in 10/20 and I left the stack filter on as you suggested and still going strong after 10k miles. I've changed the lift pump filters. How often I should change the stock filter and how often should I drain the water separators?

[@thelawnmanky]

Hey Mr Truck Master Do you have any videos on excessive white smoke blue smoke I have an 03 LB7 had the heads done and he put injectors in while done the job (Heads where done due to over heated the engine) This white blue smoke didn’t start until about a month after the job was done Can’t take it back to the mechanic he no longer exist Gonna change some filters today see if it helps I hoping it’s not injector related but most other videos seem to point that way

[@dalerudd6330]

The most practical and informative video I have ever seen.

[@hunterhobbs4374]

I used your socket wrench method on the bleeder screw and I’m really regretting that now. I over tightened the plastic screw and snapped it off with the threads stuck in place. 🤦‍♂️

[@diffmakersmith]

2011 6.6l must use filter Pliers normal filter wrench will not come off, to close to the motor. Pull the inter fender save your self some skin.

[@yonny1954]

OK, so I don't know how disconnect the water sensor plug. " JUST GO AHEAD AND DISCONNECT THE SENSOR" unfortunately is not enough for me. Can anyone help me with the details?

[@pro-fessshep7695]

Thank you. I just bought a lbz dually and needed help getting the air out the system. Your video helped alot.

[@TruckMaster]

Thanks

[@grathlocklll5741]

Nice now I gotta go watch a hsp coolant reservoir install after trying to put my fenderwells back in with self tap screws

[@evagriusponticus4080]

Thanks man the placement from my 2001 is in the same area I got this Now The I know to take off From the side

[@sydneykinsey6643]

So I have an 02 Duramax, I prefer to fix things myself, I plan on doing the fuel filter today. Do I have to open the gas cap to relieve pressure before doing that? (I read somewhere you do)

[@lt9690]

Nice video. I have a 2006 duramax swapped military humvee. You videos are very well presented. Subscribed.

[@toddolson573]

That filter looks to be the old steel housing type. The folks at NAPA said they rust out and no longer make them. Be aware that the inside center seal of the filter will sometimes stay stuck on the mount, and it obviously needs removing before installing the new filter.

[@overthinker1506]

Hey man! I know this video is older, but hoping you'll get a notification and possibly a little insight. I've owned my lb7 for almost 2 years now. Had very little knowledge before then. Now, thanks to you and your videos, I have likely saved thousands. So thanks for that! I've always paid to have fuel filter done. It's very simple, so doing it myself this time. A quick question if you have a moment. I'm not sure why, but my filter does not have that screw in sensor on the bottom. The filter that is currently on it is a Fleatguard FF5320. Just trying to figure out if that's OK and why it wouldn't have that sensor? Thanks again for all of your videos!!

[@tylermerrill9864]

dude, dig how you explain everything, whatch alot of your videos just starting to do my own stuff on my 04 LLY 4X4, keep all that great info flowing, Thx

[@TruckMaster]

+Outlaw Merrill thanks for the encouragement brother

[@duramaxad3690]

Thats funny. I have an 04 LLY too. Thing just hit 257k. Still running strong

[@rambladesmanmoe6291]

WIF sensor. Water in fuel.

[@JW_Morris]

Awesome, thank you. Videos like yours save me money in labor costs.

[@aaronmcgowen3890]

Will changing to a new filter lower or help lower oil pressure? Im getting 90 psi at idle

[@RMCification]

Might want to prefill filter prior to installation so there’s less air in system allowing for faster priming

[@ABBacda]

Just don't dump in any contaminants in the filter if you do that because you have bypassed the filter.

[@dirtbikewrecker4475]

I know this is old but here goes!!! Could I fill the filter with seafoam to get a nice injector clean?!?

[@DavidSmith-iz2ot]

What if you prime without loosening bleeder screw?

[@nikpheng6420]

cv axle. is there a cv axle brand you recommend besides the OEM AC Delco?

[@TruckMaster]

+Nik Pheng not sure sorry

[@sirsweetness8332]

NAPA has good CV Axles.

[@daniellucas9811]

Thx for all info. I’m new to diesel world and love all your info. Thx

[@weldorworx6858]

Ive ben anti diesel all my life . Needed ta pull a heavy trailer . So i own a Duramax now ! Good video . Thanx ! Good lookin truck brother !

[@rwbennett3165]

Not removing inner fender again ! It surely isn't easy way!

[@patrickhawkins7685]

You left out the part where you have to pump that primer button a million times

[@gohome228]

straight up saved me about $100. thank you for this!

[@TruckMaster]

👍

[@dnlmachine4287]

Great channel, your service is much appreciated. Tip - for the lazy like me hahahaa - just undo the fender splash shield at the top enough to bend it down out of the way so you can reach the filter. Stay gold.

[@jojodeng3378]

Awesome video!!! It was super helpful I just finished changing mine. It took me about 20-25 minutes.

[@TruckMaster]

Thanks

[@stevenbrutto7078]

How to reset fuel filter light

[@michaelbevilacqua1845]

Any videos on doing a tune up on the duramax? New to diesels

[@Rooftopmatty]

I was told by a guy who drives truck to fill the filter with atf oil before you put it on helps clean out the motor, would you recommend that with a pick up?

[@tyleralcover5901]

No. Just no.

[@roboliver2415]

Changing the filter does it auto clear the warning ?

[@Juh02078]

Chris fix of duramaxes

[@dylyo38]

How do you fix the display screen for fuel filter life and bring it back to %100?

[@TruckMaster]

Toggle the buttons on the steering wheel controls till you get to fuel filter then hold down the check mark button for 5 seconds till the display reads 100%

[@rednecklowlife]

Why does people in other videos say you have to pump the primer button like 25 times. Then tight screw. Pump 25 more. Then turn screw again. And then pump it till its hard to pump? I LIKE your way better if it works!

[@TruckMaster]

+rednecklowlife that's really bad for the injection lines forcing air into the injectors as well I've never had a issues using my method

[@MirandasAngel]

Agreed

[@brucesheehe6305]

Don't forget to reconnect the wiring harness.

[@noah-j2m1i]

what tools are needed to remove the well wall behind the tire? Thanks.

[@TruckMaster]

+Vicki Shinneman I used a flat head and pliers but you can you a body clip removal tool I used on on my water pump video if you want to check that out

[@noah-j2m1i]

Thanks! Watched the fuel pump episode - must be the little screwdriver tool that looks like a weed picker. 8-)

[@MirandasAngel]

I used an apolstery tool to remove them available at most auto parts stores at a reasonable price.

[@anthonyvera2458]

Thanks for the in depth details appreciate it

[@davekenna4074]

You did not tell how to reset computer

[@wachintv22]

I just picked up an 06 LBZ, your videos are extremely helpful!

[@Jacobpalm77]

I changed mine and it’s leaking now 😞

[@samsnead7]

Thanks for the excellent video

[@tacticalcamel703]

Diesel fuel is also a great lubricant and it's always with your truck and fuel filter so you can easily get it.

[@TruckMaster]

+Tactical Camel great point sir

[@OfficerCurran33]

I just changed my fuel filter and it won’t start. Just keeps cranking. No matter how many times I press the primer it doesn’t seem to get any pressure. Any idea what’s wrong

[@TruckMaster]

+R.Curran not trying to say you did it wrong but press all the air out then tighten the screw

[@garysarratt1]

R.Curran Tighten the screw while holding the primer button down.

[@thanethebeast]

Take a rag soaked in gas and hold it over the intake and crank.

[@poloblueboy]

Great video ! Sorry but Cummings is way easier

[@markmoore4088]

What's a "Cummings"? I have heard of Cummins.