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How To: EGR block off in LMM !!

238K views 405 replies 117 participants last post by  Eagleye88  
#1 ·
Ok...after much swearing and general deliberation I think I've come up with an easy system to install an EGR block off plate in a 07.5-09 LMM. You will need :

Moving blanket or other thick blanket
2 Stubby flat blade screw drivers..I like the craftsman ones
1 12mm ratcheting wrench
1 14mm stubby open end wrench
Tin snips/hack saw/band saw

First thing to start with is removing the intake elbow from the filter box and the turbo inlet tube and set it aside. Then remove the silencer (large plastic box with the 6.6 on it) it's clamped on the underside to the turbo inlet tube and fastened in the front by a torx fastener. Now, lay the blanket over the air box and the engine bay on the passenger side up to the turbo inlet....this makes working back there ten times better. The EGR pieces you're looking for are located almost at the firewall on the passenger side of the compartment. Remove the small sensor that is screwed into the engine side of the EGR piece and move it out of the way...this will take a 14mm open end wrench. You now have as much access as you're going to get and this is where the 12mm ratcheting wrench will be your best friend. Loosen the 2 12mm nuts holding the EGR mating surfaces together...they face the firewall and are offset from one and other passenger side lower than the driver side. THEY ARE VERY TIGHT !!! You may need to link another box end wrench on your ratcheting wrench to get enough leverage to get them off...be persistent. Now the fun part...with both nuts fully removed wedge one stubby screwdriver at the top of the mating surface and pry like your life depends on it...mine was exceptionally tight. (Make sure the gasket is on the firewall side mating surface) Once you have the parts separated take the other screwdriver and wedge it in on the outside of the driver side bolt sideways. Keep working the two screwdrivers until you can get the sideways screwdriver pushed in almost almost all the way down the blade...trust me it will stay in place. Take the EGR block off plate you purchase from your retailer...I used the one from Meyer performance...and snip the ears off the far side of each plate. It should wind up looking like it's got a hook on either side where the stud will locate it...I trimmed mine like this so you can leave the screwdriver in place while you drop the plate it. Wiggle the plate into position...at this point my plate just about fell into place. Reassemble everything in reverse...don't forget that little sensor you just removed...and you should be EGR deleted. My first attempt at installing the plate took me forever...I just did a buddies truck and it took me 20 minutes start to finish...GOOD LUCK !!!!
:drink
 
#155 ·
Well, Today is the big day, I have been dreading doing this mod long enough. It's going to be near 60 today so no reason not to get out and enjoy this day crawling around the truck. I sure hope this goes easier for me than it has for some of y'all!
 
#158 ·
The center console is a good place for that pos!!! I tried and failed miserably! I broke more than I fixed!!!!!!! Ended up getting drunk instead. Tranny is leaking fluid, too. :mad:
your tranny started leaking fluid frm doing the block off plate???? jk, that sucks
 
#159 ·
i just did mine on the first attempt, took me about an hour. i did not have a hard time taking of the nuts, i just used a open ended 12mm wrench, i couldnt with my left hand and as soon as i tryed it with my right hand they popped loose. then i just pryed it open and then sniped the ears of the plate and it almost fell in place by itself i just wiggeled it in a bit, and then just put everything back.
 
#167 ·
No need to modify my plate and it installed in under 45 minutes. The tab on the plate points up on mine with no leaks or whistle.

The key to getting the plate in is to remove the inner fender on the passenger side and use a 3-4' pry bar on the up pipe "Y" going to the EGR and use the firewall to hold the pry bar while installing the plate. Went in with just a little wiggle.

Good Luck to You! :D
 
#170 ·
Anyone wanna come over for beer and just give pointers too :rockin:drink

There are two bolts that hold the dipstick tube in, the bolts are on the bellhousing.. they're hard to see... but you need to get them loose.

sand all the paint off the DP where it mates with the turbo, it'll slide right in if you do.

cutting out the heatshield is a bitch... tinsnips won't get you all the way there.. a hacksaw blade will help, with a nice handle..

there are 3 (or 4) 10mm bolts that hold the heatshield to the stock downpipe.. it helped me to remove them, so I could get the heatshield off.

I had luck with putting the dipstick tube back in first, THEN putting the new DP in.
 
#173 ·
i don't know if this has been posted yet but gettin the nuts off for me was a piece of cake. everything was warm to the touch and put on my 4" ratcheting wrench and pried and pried nothing.. got pissed off and grabbed a 14" or so pry bar and wedged it in there and gave a little pressure and voila it came undone, same with the bottom one. i also tweaked my tranny filler tube around to get to the bottom one. my biggest problem now is to stop the whistling. back at er in the morning. can the inner fender well be removed with flares on??
 
#174 · (Edited)
Otay this is off the to do list finally. To sum it all up....I dont think it is as bad as some of you guys made it up to be. JMO! What I found to work better for me was the OP instructions and instead of the 2 small screw drivers I had a 12" and 6" pry bar and bent/pushed back with that. Didn't even have to cut the blocker. :rockin Will say it was easier if you unbolt the tranny dip stick to give you just a little more room to get leverage on the wrench. Put the wrench on the nut and cranked it down then with the pry bar under it work it and the she popped free. Took a few hours just cause of the brain storming and HTF am I gonna get there thoughts but other than that, Id do it again. NO TIME SOON :rof
 
#178 ·
So there is no way to clean the soot out of the engine except taking it all apart?

I was told a lot of the build up will burn off over time, as long you aren't accumulating new soot, is this correct? Also, that an engine flush could help reduce the amount?

After reading the horror stories for getting to the plate and removing and installing I called my local diesel shop and they said it would be 130$ to do the egr block. Think I may opt for the easy route.
I found this thread to be very informative, thanks for the write up and links.

RD
 
#179 ·
Ok just wanted to show everyone the tool I used. Extendable 3/8 breaker bar. Cost me $20 but had the nuts loose in about 3 min when I found the best place to fit it in. Just waiting for the pipe to cool down so I can finish because I just drove to town.

Image
 
#180 ·
so i pretty much got my @$$ kicked.. got the nuts loosen and got it to spread apart but could not get the passenger side of the plate to go in for nothing.. i cut the ears off and everthing that was posted on here ha.. got ticked so put it back together.. what i do wrong?
 
#182 ·
Page 8 post #75 has a pic of the sensor but not that good of a pic for the location. I did not move anything out of the way to do this but I also have a LLY so it might be different.
 
#183 ·
lmm is alot harder!!!!!!!!! why cant i get the dang blocker plate in??? goin in the right way?? the tit points towards the driver side.. that correct?
 
#184 ·
well i'm about to dive into this this week. i'd like to take the whole intake assembly off and clean it while i'm doing the PCV reroute and blocker plate install. will taking the whole intake off make it easier to install the blocker plate? and how difficult is it to take off the whole intake?
 
#185 ·
well I installed my 5" mbrp exhaust and EGR block off plate It was fairly easy Maybe cause the truck only has 18,000 miles on it.. put about 2000 miles on it and noticed a a small drip of oil near the bell housing and motor meet. i sprayed it with brake clean wiped clean drove it and it came back.. took down to the car wash pressure washed it drove home put stock exhaust back on took out blocker plate.. Took it into the dealership.. They said they are unable to find the oil leak.. I put roughly 500 miles on it since then and no sign of oil leak.. Was wondering if the block off plate had something to do with it? Maybe i didnt get it tight enough, I do know if you dont get the plate in all the way it makes a loud ass noise when the motor is running... Any ideas?????
 
#187 ·
Yeah i never thought about that thanks man..
 
#188 ·
It took me an hour and a half to do it. Getting the thing to separate to get the plate in was a world class bear. But i got it in finally, everything tightened down, then road test time.... I have the whistle, so I am going to tighten the nuts down again tomorrow....
 
#189 ·
Hi all, new on here. I wish I saw all this info a few years ago. Last November my check engine light came on at appx. 110k miles. Brought it to my mechanic and he says it's the egr and I need to take it to the dealer. So the dealer says that egr and cooler are all blocked up. They fixed it and it cost me $2,000 GrrRRrr