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: Powertrain Control Module And Connectors
Courtesy of CHRYSLER GROUP, LLC
The Powertrain Control Module (PCM) is located in the right-rear section of the engine compartment under the cowl.