One problem related to transmission solenoid has been reported for the 2002 Dodge Ram 2500. The most recently reported issues are listed below.
2002 Dodge Ram 2500 3/4 ton diesel,4 spd auto transmission. Transmission doesn't always down shift in to 1st gear after a stop. Trans starts in 2nd gear making acceleration very sluggish. June 1, 2005 had dealer replace governor solenoid and pressure sensor transducer at a cost of over $700. Truck only had 88240 miles. September 28, 2006, the very same symptoms plaque the transmission again, with 133840 miles.