WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect and isolate the negative battery cable.
Remove the attaching bolts from the cylinder heads.
Fig 1: Heat Shield, Nut & Strap
Courtesy of CHRYSLER GROUP, LLC
Remove nut (3) from heat shield (1) and remove strap (2).