On my second transmission now since purchasing my 2014 Laredo V-6 in July of 2014. After a few months on the new transmission I am beginning to notice that familiar shutter during certain downshifting. It seems to occur more often when the truck is cold and going up or down an hill.
Particularly when I leave work, there is an downward slope immediately following the exit of my parking area. If I don't let the truck warm up a couple of minutes it will shutter easily going down the hill.
Interestingly, it seems to shift smoother with a trailer on the back. Trailer weighs maybe 300lbs with a 500lb motorcycle on top.
My unlce has a 2014 diesel, not sure which model, and hasn't had any problems in the six months he's owned it. We both use these vehicles for towing, and off road adventures.