GMC Acadia Forum banner
1 - 2 of 2 Posts

·
Registered
Joined
·
468 Posts
It is a software change applied to the vehicle to alter the shift characteristics of the vehicle. In a simplified sense it alters the speed and throttle position mapping that govern which gear the vehicle is in. There is a lot more to it than that, but that gives you a feel for what it is.
 
1 - 2 of 2 Posts
Top