One problem related to radiator has been reported for the 1997 Dodge Ram 2500. The most recently reported issues are listed below.
Accelerator pedal is too loose or soft, and on a rough terrain pulling a trailer, it makes the truck start to hop. When it makes the truck hop, it causes the rear axle driveline seal to leak oil. The factory installed thermostat is faulty and makes the temperature go up and down by about 40 degrees. Had it replaced and it corrected the problem.