Did a search and couldn't find this info. Anyway, my father just bought an 07 LBZ 3500, it doesn't have stearing wheel controls to turn the high idle on and off. My 06 LBZ has stearing controls and its easy to turn on. I remember reading that if yu DONT have stearing wheel controls there is a way to turn it on and off using the pedals or something??? I have searched absolutely high and low through the manual on both vehicles and cant find anything, but i know its there somewhere. If someone could tell me where it is or how to do it, that would help. Thanks.