This module doesn't have that functionality, and is not recommended for use on bone-stock 4R100 transmissions. How many gears your transmission will potentially drop down depends on how far the pedal is pressed down (or what speed the cruise control is trying to maintain) versus how much speed the truck is losing, gaining, or maintaining. If you want improved transmission function (though I'm not sure any tuner will completely get you what you need), you should look into getting your truck a tune.