My operators manual for Allison Motorhome Series Transmissions is a 2007 January version of their publication #OM3364EN. At that time it was a GM Company. I have found on line updated versions (a May 2008 and a Decomber 2010) these are both Allison Transmission Company. Pretty much the same book. I could not find any reference to Economy Mode. However, my coach is a 2008 360QS and the chassis was produced in October 2007 and the coach was completed January 2008 and that is why I have the 2007 manual.
I did find in the fliner2008 XC owners manua,l which I recently put on the forum, the following:
on page 7.1
2500/3000/4000 MH Models
2500, 3000, and 4000 MH series automatic transmissions
have six forward speeds and one Reverse (R)
speed. These transmissions have electronic shift
controls that can be programmed to allow the use of
different numbers of geared speeds. See
For instance the transmission can be programmed to
operate as a 4-speed, 5-speed, or 6-speed unit in
the "primary" shift mode. If needed, a "secondary"
shift mode can be programmed to provide another
shift configuration to optimize vehicle use under different
operating conditions. To activate a secondary
shift mode, or other special function programmed into
the electronic control unit (ECU), depress the Mode
button. A label just above the Mode button identifies
the special function.
and on page 7.4
The function of the mode button may vary from
vehicle to vehicle. The label above the button
identifies the function.
A light in the upper right-hand corner of the
mode button illuminates when the mode function
I am attaching the 2007 fliner XC owners Manual and you will find this information in section 4
62 right lane has it right and that is what the information line technician also told me.
However, there was nothing in any on my documentation to tell me what the perprogrammed mode was until you read the part pn page 7.4 #9 and #10.