Hi guys,
I have 2 of these trucks. One is an 08 2500hd 6 liter and the other an 07 3500 Duramax dump truck I use for work.
I love this 6 speed trans. Way ahead of the old 4 speeds as far as smoothness, WIDE ratio.
One thing that really bothers me is the Tap Up/ Down tables that overide the driver's preference. Why have TUTD at all if the ECM overides what the driver requests? So I fixed that by maxing the shift tables for TUTD.
What I'd really like, and can't seem to find the table for, is to keep the durn TCC locked during TUTD shifts just like in Tow/Haul mode. I'm guessing that the EFIlive guys just have not released the tables for this or???


No big deal but if anyone knows please come forth to make my driving experience more pleasurable! Like Fahrfugnuven kind of like.

Thanks, John