I have had my Altitude for a few months and ever since I got it, it sounds like the "window is open" on the right turbine (AC vent). It gets so loud when I'm on the freeway it's hard to talk (note the AC or heat is NOT on). It is ONLY this one vent and when I took it in to the dealership, the mechanic heard the issue right away and after not being able to isolate it, said they drove another Jeep and it had the same sound so it was OK. What a run around since the mechanic heard the noise and knew it was an issue so it's not a normal Jeep thing. I have had a number of different Jeeps as rentals while they have fixed 4 different issues on my Jeep over the past 6 months and none of them sound like this. I told Jeep cares, they have one more try with another dealership/mechanic. Anyone have this issue before and know what the cause of it could be?