WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Locating CMP Sensor - 5.7L Engine
Courtesy of CHRYSLER GROUP, LLC
The Camshaft Position Sensor (CMP) (2) is located below the generator on the timing chain / case cover (1) on the right/front side of engine.