My friend has an 03 kodiak4500 with 8100 gas engine.He wants to know if there is any way to change the shift points because it is basically always in tow haul mode which is great with a heavy load but lightly loaded it is always screaming with those 4.88 gaers it has.can a button be added like our pick-ups which he can defalt it to an economy mode like the bigger allisons have?

There is only one person that i know that might do it. Diesel Tech.