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Allison Push button shifter - vehicle specific?

PowerstrokeNC

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Is the push button shifter/gear selector that is on the dash vehicle specific? In other words is it programmed in some way to that vehicle or is it a dumb device that can be swapped to another vehicle without issue? :???:
 

MaiNiaK

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Maine
I have no actual experience withe the WTEC 2 or 3. But from what I've read they are programmed, as far as specific setup of each truck.
So a WTEC 2 from an M1089 will throw error codes when hooked up to a M1078. I am not sure though if a WTEC 2 from a similarly set up M1078 would work or if it to would need to be reprogrammed.

There should be a CIN# next to the part# on the label of the WTEC. That CIN# from what I understand, represents the programming of that WTEC.

This thread has some good info.
http://www.steelsoldiers.com/showthread.php?124517-M1078-No-Start-Not-even-trying

This talks a little about CIN#'s
http://www.steelsoldiers.com/showthread.php?137308-Wtec-II-reprograming

I hope this helps some and encourages others that may have more hands on knowledge to step in.
 

swbradley1

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In the M939 Franken trucks it is a specific Allison transmission that supports it. I want to say the 3500 model but I can't remember.

My guess is that they are not swap-in replacements.
 

fastsailor

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Chapel Hill, NC
the ECU has to be programmed for the truck but you are in Greensboro so your in luck Clark power has a very good trans guy that programmed my new one .
I will be taking my 1078 back to them next week to flush and replace all the fluids with synth to resolve some hard down shifts.
if you need the CIN# that was programmed into let me know i can pull my dash and read it of my ECU
 

MaiNiaK

Member
196
4
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Location
Maine
Found this last night while doing some research.

I was trying to figure out what kind of fluid to use in mine when I change my filters. This also gives error codes and tells you the procedure for checking fluid levels.
The FMTV's have the MD-D7 Allison transmission this is the MD-3070pt, this must be the civilian model. It looks identical.!!

http://www.utxchange.com/pdfs/MechanicsTips/MT2923EN.pdf
 

tim292stro

Well-known member
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S.F. Bay Area/California
IIRC, the shifter is not vehicle specific, but the programing/provisioning of the ECU is. An Allison shop with a programmer should be able to help swap out any Allison user interface - this programmer is also used to set shift points with the electronic controlled transmissions, so they are very common.
 
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