2005 2500HD 8.1 allison trans. i cant get it to go past the read of the TCM. what fuse do i need to pull to make it work, or what do i need to do to get HPtuners to read the computer? it gets about 80% done before it says FAIL.
2005 2500HD 8.1 allison trans. i cant get it to go past the read of the TCM. what fuse do i need to pull to make it work, or what do i need to do to get HPtuners to read the computer? it gets about 80% done before it says FAIL.
Uncheck the "High Speed" checkbox just before you read it. It will take a long time to read but it will read it. You only need to read it once.
Always Support Our Troops!
thats all? 100% sure? im doing it now...OMG 30 mins..LOL...i guess its nap time.
Let us know. The diesel guys have this issue reading the Allison trans and that's what you have.
Always Support Our Troops!
He must be taking a big nap. Id like to know as well, we have a truck with the allison, and a suburban with the 4L80E
On vehicles with the LS1 pcm & Allison 6 speed TCM you need to pull the underhood tcm fuse to do the read & write.
Its an issue with the LS1 pcm having transmission controls paired with a tcm.
It doesn't have to be perfect, it just needs to be done in two weeks...
A wise man once said "google it"
I had to start unchecking the high speed box on all vehicles I read or write too after I upgraded to Vista for some reason.
2006 Ford F250 CCSB 6.0 Powerstroke
SCT Tuned by Vivian @ QuickTricksAutomotive
unchecking the high speed worked great! took 20 mins lol but it worked!!
Reply With Quote