The Chrysler Pacifica uses a ZF 9-Speed transmission.
It's the exact same transmission that Honda and Acura use in many of their vehicles. Other manufacturers also use it.
Any "bugs" with that transmission were ironed out already a long time ago. It has been around for a while, and is a very good transmission.
9HP is the trademark name for the ZF Friedrichshafen nine-speed automatic transmission models (9-speed transmission with Hydraulic converter and Planetary gearsets) for transverse engine applications, designed by ZF's subsidiary in Saarbrücken and built in Gray Court, South Carolina. It is used in...
https://en.wikipedia.org/wiki/ZF_9HP_transmission