Sometimes when I'm going from D to R I get a pretty harsh clunk. No other problems noted. Wiggled the driveshaft and it's tight so don't think U joints are an issue. No unusual driveline slop noted at speed going on and off throttle, and no strange noises. Truck has 18K on it with moderate towing and normal driving habits.

Is this just a common characteristic of the 6.7/68RFE combination on a 2010 2500 4 x 4 CC w/3.73 limited slip diff or should I have the local Mopar techs have a look?