Dodge Ram 2002-2008: How to Replace Transfer Case Motor

Sometimes, the electric motor that operates the 4WD system in your Ram truck may not work—find out how you can fix it.

By Jerry Perez - August 3, 2015
Contributors: 1A Auto Parts

This article applies to the 3rd generation 4WD Dodge Ram (2002-2008).

In your 4WD truck there is a small but significant motor that allows the transfer case to operate, and this electric motor is controlled via the electronic 4WD module inside of the cabin. If the motor gets jammed, wears out, or gets damaged on the terrain, the transfer case will fail to switch from 2WD to any of the 4WD traction modes. Repairing this component is as simple as replacing it; a job you can do yourself with just a short amount of time.

Materials Needed

T45 Torx bit
Ratchet
Hydraulic floor jack and jack stands (optional)
Drain pan

Step 1 – Jack up the truck (optional)

This step is optional, and depends on the ride height as well as ground clearance of your truck. If you can safely and comfortably work underneath it, skip this step. Otherwise, use a floor jack to properly lift up the truck and secure it with jack stands.

Step 2 – Remove the old motor

Locating the transfer case motor is straightforward. Follow the rear drive shaft to where it meets the transfer case, and to the left of the drive shaft you will see an electric motor with a wire harness connector attached to it.

Use a ratchet with T45 Torx bit to remove the three (or four depending on your Ram model year) bolts securing the motor to the transfer case.
Unplug the wire harness connector.
Place a drain pan underneath the motor, and pull off the motor from the transfer case. A small amount of fluid will come out.