Got to love it. i was looking through the ram body guides for your year and I see "the following truck models are NOT recommended for slide-in camper applications: Dodge ram, All 4x4 models equipped with Snow plow prep package".
click hereI had a 2015 dually that came with a truck camper slip that said "not recommended". we never knew for sure but this group thought it was because of the snow plow prep package. but now I see it in print.
PS: A snow plow prep group includes a bigger alternator and a transfer case skid plate. Guess they don't want you snow plowing with your camper loaded.