Updated with my experience after using this procedure for 1 year to eliminate rough shifts.
This will also work on Jeep Cherokee and Honda Odyssey with the same transmission.
I walk you through how to clear the adaptive programming in the 948TE ZF 9 speed transmissions used in 2017+ Chrysler Pacifica. Doing this periodically has greatly improved the shifting in my Chrysler Pacifica.
I believe the factory "adaptive" programming is too aggressive and has degrades shift quality over time. Clearing these adaptive parameters out gets you back to original shift parameters and smoother shifts.
