Hey All,
I got a 2008 F750 with the Cummins, Allison 6speed powertrain combination.
The Allison shift panel comes up with a trouble code something about torque convert er lockup selenoid circuit low, They say it may be a wire broken or chafing wire somewhere. The Allison people want to replace the computer and valve body on the transmission which will break the bank!

The tranny has not engine breaking and the torque converter does not lock up and the Jake brake does not work.

Has any one run into this problem, what was the cure?

Thanks for replies,
Bubu 11