terry735001

i know there are so many ppl asking fro help and i really want to thank who ever can show me the right way as this seems to be really hard to find this info
this is a RV setup and is my home and i really need help


i am looking for the pin outs for 2006 ECM 8.1 /12200411 wiring diagrams
i have seen
http://lt1swap.com/8100_harness.htm that is from a 2001/02??
is that pin out the same in the 06/05

now the hard part
i am trying to add a 4gen MD TCM allison 1000MH 6 speed setup and it looks like i have to make that wiring

i have all so seen the page 2 of
http://www.4btswaps.com/forum/showth...p-guide-thread

it has 4 gen but there pins out don't mach some other pins outs i have seen for 4gen some of the wiring is wrong

i really need some wiring diagrams of the allison and 8.1

i have been looking for months and its making me sick trying to find this stuff
i cant even find any 1 that can make this wiring harness and i am in no where in FL so i can find a MD or light setup to take it from

i really truly need help
thanks for all you guys help in this

terry735001

so i am guessing no 1 else knows any thing

slowpoke96z28

iTrader: (2)

You're gonna need to subscribe to something like mitchell, alldata, or GM SI (I think they call it ac delco tech connect or something). You then need to figure how to get the ecm and tcm to talk. Will it be class 2, gm hi/lo speed lan, or what. Thenfind those in the diagrams. There will stiil be some software issues though even once you get both control modules talking to each other, as they weren't set up to work together. The 8.1 ecm has trans software already, and the tcm or ally herself will freak when they see it because they operate a lot different than the hydramatic. You got your work cut out for you bud...

1 FMF

iTrader: (1)

i have a 2006 2500hd with the 8.1 & allison.
i get a chance i'll look it up in my service manual however i'm not going to copy and post pages. you should consider buying a service manual if it has the info you need,
http://www.helminc.com