1998 DODGE RAM 2500 5.9L 12V Diesel AT Transmission P56040034AC PCM STOCK# CTP260. Tested and in good working condition. May Require professional reprogramming to work in your vehicle. Part Numbers must match. 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. We work hard to provide accurate documentation to help minimize delays.