6 Speed Allison TCM's

[Cougar281]

What changed in the hardware for 2009?

The A50's started appearing in the 09 trucks. There are also A46's out there that are apparently superceding the A40's part numbers now. Why they didn't just develop a CAL for the A50 & LBZ to reduce the number of part numbers, I have no clue.

I am confused (a perpetual state). LMM and LBZ have the same OS?? Didn'tthe LBZ A40 have an LBZ OS? With no full flash capability, hence my confusion.

Tech2 + TIS2Web or TIS2000 = full flash capability

[killerbee]

Trapped in my own paradigm, once again! Thanks Dave.