The third-generation Ram was unveiled on February 7, 2001 at the 2001 Chicago Auto Show. This was a major update including an all new frame, suspension, powertrains, interiors, and sheet metal.
My daughter's truck has an issue with the tranny. When put in gear it momentarily disengages and reengages itself. Seems to only be in lower gears or reverse
I had this problem and i changed the transmission filters and refilled and put a bottle of lucus transmission conditioner and have had no more problems. But it could be a transmission problem.