Why isn’t it shifting gears smoothly/properly

Hello, did you just acquire this Passport? The Passport features a 9 speed automatic transmission which is a very good transmission - but it does take some time for it to learn your driving style and shift accordingly. It also acts a little differently than other vehicles and transmissions you may be more familiar with. If there is trouble with the shifting, the transmission system will set a warning indicator so it can be checked. How many miles on this vehicle? I would advise in this case to have a Honda dealership service department near you drive the vehicle with you to share with you their opinion of whether or not it feels "normal" or not. The transmission does fall under the factory 5 year 60,000 mile warranty in the unusual event there would be a problem.