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2007 GMC Duramax 6.6L LMM

dlewis1340’s Diesel Place : Chevrolet and GMC Diesel Truck Forums Garage
2007 GMC Duramax 6.6L LMM
2007 Sierra LMM SLT - Ordered for me and stocked with everything but clearance lights, dual alts & tow mirrors. I prefer the looks of the regular mirrors and wanted power fold.

Truck has Cognito Tubular Upper Contol Arm (UCA) leveling kit and pitman/idler arm brace kit and shock extension brackets. I got just under 2" in front lift from the Cognito kit and torsion bar crank. The Cognito kit delivers a great ride even with the bars cranked. BELIEVE IT !!!

I added the Cognito HD tie rods and Cognito Torsion bar keys. Fender to ground height is 41.5 inches and it is siting level front and back.

My Summer wheels were Ion Alloy 137 20x9 and first set of tires were Toyo Open Country AT 305 / 55 20 tires. The wheels are 0 offset and 5 inch Backspace and the tires rubbed terribly at first. I had to use leather punch to make a nice clean hole 1 inch from the edge of inner fender liner and then zip tie the front edge of inner wheel well liner forward and rear edge backward. If you get the Ion Alloy 137 wheels I think the +18 offset with 5.7 inch backspace would be a better fit. You should make sure they do not rub the UCA however.

I also had to trim some of the front and rear edge of the wheelhouse liner and trim the sheet metal (fender) at the back edge of wheel well. The body shop did a great job welding in a panel to stiffen the edge of the cut area and then painting the whole area to prevent rust. There is a picture in my garage shows the cut that was made. After all that work I now have greatly reduced to almost no rubbing issues on level ground and even while backing up on level ground !!! Just have to drive aware & slow down when turning and articulating at same time.

I just switched to Nitto Terra Grapler 305/50 20 and my rubbing issues are GONE. Not quite as beefy at the 55 series but I'll take it to have ZERO rubbing.

Underseat storage bin/gun case is from: http://www.du-ha.com/

I added the 2nd generation Coastal Tech Lock Pick installed and a Parrot CK3000 evolution bluetooth car kit to the factory navigation system.. The LockPick (plug and play black box) is a great mod. It allows DVD video while moving on front screen, Unlocks address entry while moving and gives you a hands free cellphone input. In addition you get the video input for the rear view camera.

Parrot Bluetooth kit is nice also. I may swap out to a Sony HCB700 if I can find a deal on one.

Backup camera is in license plate and is from XO (walmart.com - $86) and feeds into coastal tech lockpick. Backup camera is incredibly handy when hooking up a trailer alone. You can nail it dead on everytime. You can see hitch ball in lower center of screen in gallery picture. I suggest you wire camera power into lockpick provided power source behind radio vs, using backup light circut in rear of truck if you do this you can turn on camera anytime and it still turns on automatically when in reverse. http://www.walmart.com/catalog/produ...uct_id=5707252

Added iPod integration to factory Nav/DVD Video unit via the Peripheral PXDP3 IPod Interface & PXH3GM1X harness to retain XM and add PXDP3. Simple 5 minute install behind the glove box and it works good. it takes a bit for all the playlists to download into the system but it does it eventually. It has much better sound than the 3.5 mini phono input. Using the remote start seems to screw it up however. You lose control of the ipod if you remote start. You have to shut down and restart engine to get it working correctly. I have heard other have this problem with other brands of Ipod inputs as well.

5k H11 HID headlight upgrade. WOW !!! I just used a Generic $100 kit from ebay but it really lights up the road. One of my favorite mods so far. You can PM me if you want to know where to buy.

Radar detector (V1) is hardwired. Wire runs across headliner by driver and down drivers side a pillar to fuse box area.

GMC OEM Molded Mudflap.

Nerf Steps are Dee Zee 17053

Billet Grill is a Carriage Works bolt over logo shows

Added - GM Wheelhouse liners part# 19166677

Added - GM Brushed metal Center Console part number 25912890

Added - Magnaflow DPF Back 4 inch Stainless exhaust

Added - Nitto Nerra Grappler winter tires On 17" OEM Wheels - 285/70/17 - Last 2 pictures are with winter tires

Added - Loraedo Tonneau Cover. Love it !! Nice product.

Added - 3910-CW6 Festoon Bulb (6 LED Cool White) - from superbrightleds Overhead interior lighting. Way cool looking. Lot less light however.

Thanks for all the positive remarks. Let me know what you think in the comments please. Any suggested additions?

Click Thumbnail to Enlarge.
2007 GMC Duramax 6.6L LMM - Photo 33750 2007 GMC Duramax 6.6L LMM - Photo 33751 2007 GMC Duramax 6.6L LMM - Photo 33752 2007 GMC Duramax 6.6L LMM - Photo 34683 fender cut 2007 GMC Duramax 6.6L LMM - Photo 36501 2007 GMC Duramax 6.6L LMM - Photo 36502 2007 GMC Duramax 6.6L LMM - Photo 36503 2007 GMC Duramax 6.6L LMM - Photo 36504 2007 GMC Duramax 6.6L LMM - Photo 36505 2007 GMC Duramax 6.6L LMM - Photo 36506 2007 GMC Duramax 6.6L LMM - Photo 36688 2007 GMC Duramax 6.6L LMM - Photo 37019 2007 GMC Duramax 6.6L LMM - Photo 38893 2007 GMC Duramax 6.6L LMM - Photo 38894 2007 GMC Duramax 6.6L LMM - Photo 38895 2007 GMC Duramax 6.6L LMM - Photo 42120 2007 GMC Duramax 6.6L LMM - Photo 42121 2007 GMC Duramax 6.6L LMM - Photo 42122 My Favorite Angle 2007 GMC Duramax 6.6L LMM - Photo 71195 Winter tires - Nitto TG AT - 285/70/17 2007 GMC Duramax 6.6L LMM - Photo 80756 2007 GMC Duramax 6.6L LMM - Photo 124125
Gallery Statistics
Member: dlewis1340
Created: 06-13-2007 06:25 PM
Last Modified: 07-17-2009 11:07 AM
Views: 6633
Images: 24
Comments: 20

Author Comment Date
Horp Love the truck! 10-14-2010
double047 Good looking truck right there! 09-25-2009
frankteo Did the 285's rub on the front mudflaps? I was planning on doing a similar setup. 03-28-2009
Carl Lassiter Really nice looking rig. How much was GM Wheelhouse liners part# 19166677, installed? 01-26-2009
red dirtymax nice lookin truck. 12-12-2008
serge she is a beauty 04-28-2008
michigandmax Very Clean. 04-03-2008
Cloughm Looks Clean. Nice wheels and tires 02-19-2008
RealPower I totaly agree with everyone...Very Good Looking Truck...Thanks 01-10-2008
bobt2948 Very nice---I have the same -- only in a chev. I painted my grille surround and front bumper to be all white with a billet grille. Good description of yours. I like the rear camera--might do same. Thanks for info 12-20-2007
JC PAINT WORKZ man the lmm is really growing on me BAD... i want one...lol 12-16-2007
Dave50mod very nice truck nicely done 11-14-2007
hookdOnDmax Very nice upgrades. Espec like the underseat box & info re tire/fender fit. Profile picture after wheelhouse liners?? 11-05-2007
tonydduramax sweet ride love the tire's and rims 10-31-2007
gator232 Man..nice! I like your mods..sensible and useful. I am going to emulate your setup! 09-13-2007
dmaxdon I'm usually not a big fan of white trucks but wow! Your truck looks amazing! gotta be one of the best looking nbs trucks, nicely done!!! 09-05-2007
GMCJOE The Billet Grill on your truck looks Sweet dlewis! I see what you mean on the placement of the GMC emblem now compared to the other truck.Thanks! 08-24-2007
dlewis1340 barro - nice to know that soeone else had to trim a new truck Your 325's on 18's look nice also. 07-27-2007
ridge Good lookin Truck 07-27-2007
barro30 Nice truck.... Mine is almost identical other than chevy vs gmc. I had to do the same trimming. You got a clean good looking truck. 07-26-2007
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