Module, Drivetrain Control (DTCM): Description
WARNING: This page is about a different car, the 2017 Dodge Charger. However, it is still accessible from the selected car via links, so may be relevant.
The Drivetrain Control Module (DTCM) controls the 4X4 transfer case shift functions via the actuation of a shift motor and utilizing the feedback of a mode sensor assembly. Communication is handled through the CAN bus. The user selectable transfer case modes include the following: 2WD, 4WD AUTO, 4WD LOCK, 4WD LOW, and Neutral (selections vary with the specific transfer case).
The DTCM is located in the drivers footwell, under the drivers foot rest.