Oddest thing. I started up the car today and drove into work no noise. Then on the way home. I picked up my kid, started the car and it was like somebody had turned on a palm sander in my dash. I turned it down one notch and it was quieter. So I turned it on full....WOW! It was like a giant vibrator. I checked a few vents and took off the cowling under the passenger side dash and there is the motor for the fans. If I unplug it, its silent ( heheh).
Can anyone offer any suggestions?