3/29/19 UPDATE: Snail mail delivered the new O2 sensor today! Did the job of installation by removing the cowl/wiper assy,and with road test spent all of 45 minutes to do the job! All is good again and up to "par"! :D
I've even got a working horn and radio sound back!
THANKS TO ALL who responded to my plea! :) :cool:

Hi sorry I didn’t know another way to get into contact with you with this question , I have a 2017 Chrysler Pacifica a couple hours ago my car start riding rough and then my check engine light came on blinking now it’s not blinking only when I drive and hit a certain mileage 65mph it’s not blinking anymore but still shuttering when I drive help please!
Thanks

While I'm honored that you would want my advice...There are a number of members on this site that would be more than happy to try and help by you posting your own thread.
The industry wide standard of a flashing CEL denotes an engine misfire. Whether it be from a bad spark plug or ignition coil to even a malfunctioning fuel injector.
At other operating conditions, does the CEL stay solidly lit on the dash? And my FIRST advice is to get the car to a place like an autozone/O'Rielley's or such that will scan the computer for free to get codes that will give a good line as to what is going on. Codes for motor operation are in a P _ _ _ _ format, with you posting those I and others here can then start to be able to try and help. IF you are not the DIY type, all I can tell you is to either get it back to your dealer or if you have an independent shop that you use to have them "check it out".
Good Luck, and I hope this gives you some initial starting point to get your ride running right again.

Hi John mark,
We understand why this may be concerning. We suggest having your dealer address this at your earliest convenience. You may also send us a private message if you would like any additional assistance while your vehicle is at the dealer.
Lydia
Dodge Social Care Specialist