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Old 10-03-2015, 03:27 PM   #1 (permalink)
nosprkplugs
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2004 Suburban 2500 Quadrasteer Build Thread

Ok, so here goes, I have started some question threads in the past for this project but this is going to be the build thread. The transplant patient is a southern California 2004 Chevy Suburban 2500 LT 4x4 Quadrasteer. This is my first quadrasteer and I until I pull my hair out or break the bank trying to repair it i just love it! Mileage on the Sub is 150k and it is very straight, clean and rust free. The donor is from the Greer SC Copart salvage auction, 108k, bone stock from what I can see and looks like brand new from underneath. I havent made it far on the project yet, just making some progressive lift pucks is about the extent of the entertainment for now. I am still trying to decide how to do my fuel tanks, tie them together with a crossover line or leave the factory transfer pump. I like the pump idea for the OEMness of it but the crossover seems so easy and trouble free. Any opinions? Let me know! I will try to upload some pics here, not sure I remember how to do it so forgive me if I dont get it first try!
The Donor








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Old 10-03-2015, 06:13 PM   #2 (permalink)
skippie
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If at all possible stay with the factory transfer pump. I originally went with a crossover setup and one draw back is on a long trip after about 45 mins the fuel gauge will drop to E, because theres no change in the sending unit for such a period of time, the computer is programed to drop the gauge to warn of an issue. It will eventually start reading again once you use all the fuel in the back tank and the level in the front starts to drop, it would still make me nervous till that gauge started working again.



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2008 gmc sierra 3500HD LMM bds 7" 37" AT3Ws,built trans,possible s475 over stock build,
2004 Suburban 2500HD, 4x4, LBZ/Allison, DSP5, MBRP,
2005 Hummer H2, Blk on Blk, LLY/Allison 4x4, EFI Live by ME!
2018 Tahoe premier RST (future Iml or l5p?)
2001 GMC Yukon Denali XL 2500HD 4x4, LB7/Allison EFI Live DSP2 by Theferminator, MBRP,
2003 GMC 2500HD 4x4 CCSB, LLY/Allison, DSP5 EFI live by Idaho Rob, 5" MBRP exhaust, 6" pro comp lift, 35" nittos, LBZ mp
2003 GMC Yukon XL, 2500HD, 4x4 LBZ/Allison, EFI live by Idaho Rob
2003 GMC Yukon Denali XL 2500HD 4x4, LBZ/Allison, EFI live DSP5 by Theferminator
2006 GMC 3500HD C&C, LBZ/Allison, 14' aluminum dump bed
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Old 10-03-2015, 10:17 PM   #3 (permalink)
elcaminonut69
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What motor is in the donor vehicle


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Old 10-05-2015, 11:50 PM   #4 (permalink)
nosprkplugs
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Donor is an 06 LBZ. I am familiar with the problem that skippie is talking about where the computer will set a code and drop the fuel gauge to empty if not enough change is seen in fuel level. Can this problem be fixed with EFI Live?
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Old 10-06-2015, 04:41 PM   #5 (permalink)
elcaminonut69
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Yes efi live can make the tanks work just like factory. My 2003 works perfectly.


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Old 10-06-2015, 07:30 PM   #6 (permalink)
skippie
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No you cant fix the "drop out" that's a factory setting
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2008 gmc sierra 3500HD LMM bds 7" 37" AT3Ws,built trans,possible s475 over stock build,
2004 Suburban 2500HD, 4x4, LBZ/Allison, DSP5, MBRP,
2005 Hummer H2, Blk on Blk, LLY/Allison 4x4, EFI Live by ME!
2018 Tahoe premier RST (future Iml or l5p?)
2001 GMC Yukon Denali XL 2500HD 4x4, LB7/Allison EFI Live DSP2 by Theferminator, MBRP,
2003 GMC 2500HD 4x4 CCSB, LLY/Allison, DSP5 EFI live by Idaho Rob, 5" MBRP exhaust, 6" pro comp lift, 35" nittos, LBZ mp
2003 GMC Yukon XL, 2500HD, 4x4 LBZ/Allison, EFI live by Idaho Rob
2003 GMC Yukon Denali XL 2500HD 4x4, LBZ/Allison, EFI live DSP5 by Theferminator
2006 GMC 3500HD C&C, LBZ/Allison, 14' aluminum dump bed
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Old 10-07-2015, 01:04 AM   #7 (permalink)
nosprkplugs
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Ok, well that settles the fuel tank decision, I will be using the factory transfer pump which means I will need a cab & chassis tune. If someone could point me in the right direction would be great. Also, does anyone know if this requires changing wiring to the pump? I can compare wiring diagrams for both applications if need be. What about adjustable petals? If I remember correctly from other threads, I will need a petal assy from a 2007 or newer sub, tahoe etc? Can anyone confirm this? I don't have much for progress to report yet, the suburban remains driveable as I am in the process of disassembling the donor. Hopefully I will have some progress to post soon. Thanks to everyone for sharing your knowledge and helping me out!
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2004 GMC Yukon (not xl) 1500 Duramax LLY (Sold)

2004 Suburban 2500 Quadrasteer LT (Sold)

2004 Escalade ESV (ultimate family hauler/tow rig build in progress....)
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