Curious if any of you are familiar with the 'buzz' most newer Chrysler's make when slowing down?
If you are and that's the buzz you get, it's the line pressure of the transmission being lowered so the transition between shifts isn't jarring. It isn't anything wrong with the transmission. So it's basically a NVH issue.
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.