After some highway runs I haven't heard the whistle which seemed to come from the driver side mirror. The dealer replaced the door seal. I'll look through my paperwork tomorrow and post which one.
I thought for sure it was from the mirror as I would hold my hand between the mirror housing and the door frame while driving. Also with the window down it seemed the sound was from the mirror. Either way, haven't heard the whistle since getting the car back on Friday and it is nice and quiet.