2001 Fleetwood Discovery 38U Data Bus Location
New to this group and 1st time posting.
I have my 2001 Fleetwood Discovery 38U in an Allison transmission shop trying to determine why my coach will take off from a stop correctly, shift thru 1st, 2nd, 3rd, & 4th gears and then downshift back to 2nd and stay there. The shop is telling me they are not able to communicate with the transmission and are trying to locate the Data Bus.
Would anyone be able to help me with where this data bus may be located on the coach?