I have a 2016 CHEVY Silverado 2500HD Double Cab, LT 6.0 gas flex with MANUAL FOLD TOW mirrors and would like to upgrade to POWERFOLD TOW mirrors. My truck was built in May 2016 and purchased in Chicago, Illinoise. Has anyone did this upgrade? From reading this form it seems that Phil Gamboa is the resided expert for the North American Continent and maybe this question will be addressed by him. It seems that with my truck, all that I need to do is to install the mirrors, mirror switch and modified harnesses and that flashing by the dealer is not necessary unless I want the FOB Key POWERFOLD to work. Any help with this would be appreciated. Thanks, LA82