Squeak / Whistle from passenger side vent

[HammerESQ]

My new (to me) Boxster S is giving me an annoying little issue, an intermittent whistle from the passenger side vent. Is this a common issue, does anyone out there know where to start diagnosing?

Thanks!
Eric

[boxstar]

could be coming from the hole in the gas cap compartment. try taping over the hole and see if the sound goes away.

[HammerESQ]

Thanks for the tip, I'll give that a try tonight!

-Eric