Used 2003 Dodge Ram 5.9 Cummins Diesel Auto 4×4 Engine Control Module ECM ECU 3963994. Part was removed from a good running 2003 Dodge Ram 2500 4×4 5.9L Cummins turbo diesel with an Automatic Transmission and Auto shift T-Case. Any major markings or damage will be photographed so please check all available images. The item(s) you see in the pictures is the actual item you will receive. Please see photos for best reference on part condition. Most electronic parts need to be programmed to the vehicle by a certified mechanic or the dealership. We check all electrical parts before dismantling the vehicle. All Sales are final. Parts are racked and shelved once listed online so it may take a few days for a response to detailed or technical questions.