It is not the switch. It is a totally different transfer case. You have to get the other transfer case and the switch. It is not a 195 dollar switch. You have to order the truck with the auto transfer case.I'm was looking to order a Rebel since that can get blindspot detection still instead of Laramie that can't so not worrying about serious off roading except simple campsite trails or fishing of a beach. In nj so the auto in winter mix weather good to have on. So again if simply dash part swap that will be fast than order sauce i have to have then pop on brake control as well.
I survived NY winters without 4wd auto - had it in my Silverado so was used to it - but did not have it in the Rebel. It really wasn't an issue - just throw it into 4wd if you feel you need the extra traction. I wouldn't let that deter me from getting the truck.