Transmission Control Module - 4.7L/5.7L Vehicles
WARNING: This page is about a different car, the 2008 Jeep Commander. However, it is still accessible from the selected car via links, so may be relevant.
The Transmission Control Module (TCM) is a sub-module within the Powertrain Control Module (PCM) (1). See Fig 1. The PCM is located on the right inner fender.