I have a '21 Limited bought new with 55K on the clock and 26K of that towing a 6000# travel trailer. I have experienced clunking twice since purchased, both times during a downshift (don't know the gear) slowing from a highway speed. My biggest complaint is when it sits outside below 30 degrees, I have experienced a neutral-out during the first 3 min of operation. Not every time but it's happens occasionally. Nerve racking!