Squealing Behind the Dash

OK, this is driving me crazy! My dashboard gets a high pitch squeal behind it when I hit highway speeds of 75 mph or more or when a gust of wind hits the truck. It sounds like when you blow on a blade of grass held between your palms; really loud and annoying. I know it has something to do with a vibration under the hood or in the dash.

I tried to tape down the washer fluid cord to the underside of the hood in case air was vibrating that; no luck. Messing with the AC/Heater controls does nothing.

Now, my wife refuses to ride in my truck on the highway as we delt with the noise today for 3 hours.

Any ideas on the cause of this sound?

 

You mean like this?
http://www.youtube.com/watch?v=iFEMNAm5ARM

 

id just tell people its a defective supercharger

 

I hear this in my 2016 taco. How do I fix it??? Sounds like it's coming from upper windshield, on both sides, depending on the wind direction.

 

T-SB-0062-12, I'd say it's something to do with windshield installation? Is it the factory windshield?

 

Yes, factory windshield. Is this TSB for 2016 models? If I take it to the dealership and give them this TSB, should they know about and fix it? Thank you

 

2009-2012, what year is your truck

 

2016