Hi Mart5130,2017 Pacifica with same transmission issue: sometimes slams hard into second gear at low speed. Very intermittent- no rhyme or reason to the hard shifts. Took to dealer- they said on first visit it needed a transmission control valve- which was back-ordered at the time. Then dealer said Chrysler insisted they try an ECM flash - set back to factory settings- before they would authorize the control valve repair. So ECM flash was done and car was fine for about two months- then started doing the same thing again. Took it back to dealer and explained the issue . They gave us a loaner and kept the car overnight. Next day called and said they checked everything and could not replicate the problem (which I told them they probably wouldnt be able to do) - and therefore nothing could be done. In other words something has to REALLY break before they can get Chrysler to authorize a warranty repair. So we have the car back now (27k miles) and are just waiting for the next time. My wife drives the car 95% of the time and is NOT happy.
I am sorry to hear that you have a concern with the transmission in your Pacifica. If you return to the dealer for this concern, please feel free to send us a private message for additional assistance while in service.
Chrysler Social Care Specialist