New Member
can anyone tell me where i can find info to reprogram my allison- i want to have it shift earlier under no load- for better mileage-
sort of a reverse tow/houl mode-thanks-hh

Grandview Trailer Sa

Senior Member

I sell various reprogrammers for vehicles, but I do not know of anything aftermarket that changes the Allison. When I reprogram the Duramax, it does not effect the trans. You might want to check your dealer and see if it is even possible.