Recirculation On = "Kazoo" Sound

[Mitch_1971]

A "Kazoo" sound coming from the passenger side vent when the recirculation button is "on". Ram 1500 Laramie (night edition)

It started 3 months after buying the truck. It's back at the dealer now. We test drove another truck to compare with all the same settings ( no sound ). Waiting to hear back.

Any thoughts / feedback? thanks all

 

[Mitch_1971]

A "Kazoo" sound coming from the passenger side vent when the recirculation button is "on". Ram 1500 Laramie (night edition)

It started 3 months after buying the truck. It's back at the dealer now. We test drove another truck to compare with all the same settings ( no sound ). Waiting to hear back.

Any thoughts / feedback? thanks all.

 

[Richard320]

My guess is somewhere inside the ducting, there's a piece of tape or a parts sticker that has come loose and is functioning like a reed.