I agree the LMM is a tight fit. Good DIY

 

2500HeavyDuty,

Thanks so much for posting this, it went really smooth! I really appreciate it!!

 

Well im gonna give it a shot on my 2008 duramax doolie soon as I got 32% life left on it. I had an 05 doolie duramax and tryed it and ill be damned I broke the line going to the rear injector as fuel was pouring out. Luckly my dealer coverd that under warintee. so im kinda gunshy to try it on my 2008 but at 40.00 for a filter compared to 110.00 to have the dealer do it?? Better money in my pocket. Any suggestions. Ya im mechanicaly enclined but once bitten twice shy. I stilll got night mares of the broken injector line on my 05. Very good post on the filter change and great photos. I am just curious my 2008 is this is the 3rd or 4th gen of the duramax?? Was it the same way on all generations to change the fuel filter??

Eddie B Wappingers Falls NY
2008 gmc sierra slt crewcab doolie duramax

 

urs is a lmm so i guess it can be called a 4th gen. alot of people can change it from the top i do sometimes. but first time get some pin pullers for the clips holding the plastic fender liner on its tricky to get the filter on there you have to develop a feel for it.

its all basically the same procedure.

 

urs is a lmm so i guess it can be called a 4th gen. alot of people can change it from the top i do sometimes. but first time get some pin pullers for the clips holding the plastic fender liner on its tricky to get the filter on there you have to develop a feel for it.

its all basically the same procedure.

Thanks so much my friend. As I mentioned im so gun shy from snapping that injector line on my 2005 that it makes me hesitant to replace the one on my 08. Ill get a clip puller and do it that way. Last thing I need is another snapped injector line. then again im guessing the lines are different on my 08 over my 05? This is a great forum and im a newbie. I know gas but im virgin on diesel motors so forgive my ignorance please. Ill take your suggestion to heed and do it that way. As I said I got 32% left and only 10,000 miles on it. I got a run from NY to KY. to deliver a 64 belvadier then possibly to Mich. To deliver a b.b. cobra then back home to NY . So im unsure if ill do it before this trip or after. Thankyou so much again for getting back to my post.

Eddie B SouthEast NY

 

Im guessing that injector line you snapped was the injector return line, yeah its still there, you should have no problem with it being in your way getting it from the side. One thing i should add is that if you buy a WIX filter it comes with a huge rubber seal that goes in the top center of the fuel filter, kinda looks like a grommet. The last time i changed my filter the rubber seal from the old filter got stuck up in the filter housing and it prevented me from putting the new one on.

i dont have a pic of it but you will see it, its a fat one

 

that bleeder screw why do so many snap it or are afrade of snapping it? Whats it made of?? Also is snug good enough for a tightness for that bleeder screw?? I just found out reading all the posts on this topic that the bleeder screw is plastic sadly HOW DUMB IS THAT??? Im only going to snug it back in place. Yes it was the return line for that injector. So im defanetly gonna pull part or the whole fenderwell cover out and get a 100% visual on the whole thing for this first time changing it. WHAT A KICK *** FORUM!!!!!!!!!!!!!!!!!!!

Thanks
Eddie B

 

pretty dumb.... i keep mine bleeder screw finger tight, i have a lift pump on it so even with 12psi pushing against it it doesn't leak. and its always easy to bleed no tools required i just unscrew it with my fingers.

 

thanks so much brother. I was figuring on snug thats all now that I know its plastic. I see the knoledge on this forum is 2nd to none im so glad I bumped into yous

Thanks

Eddie B

 

Thanks for the post and all the pics.
I'll be doing my first FF change sometime in the next couple of months.

I'll probably at least try to do it from the top though.