Wind blows through my ceiling exhaust vent

[Rowley]

I have a 2022 tranquility when I drive down the highway the wind blows through the ceiling exhaust vent when I hit about 60 miles The wind blows through alot…by the time I am 70 miles an hour it’s very loud to the point you can’t even have a conversation with the passenger. Took it to the shop four times and the issue is not getting resolved..,,,anyone out there have any suggestions? Is your ceiling exhaust fan/vent noisy?
Good day
Rick

[ducksface]

Four times in the shop and no one thought to put a $33 cover on it?
Hours and hours of bay time used...
Four other folks who can't get an appointment....

[DbleDutch]

Cover and $12 vent pillow.

[EA37TS]

Read your warranty and comply with the requirements by sending the certified letter.

And yes, your warranty tells you what you must do and where to address the letter.