Whistling from under drivers dash

[zeddy]

When driving home this evening, I noticed a very slight whistling coming from inside the cab. Sounds like it's coming from under drivers dash. It's only there when I'm stopped and iding. When I accerlerate, whistling pitch changes and goes away or i dont hear it because of enging noise. It's there when I'm stopped whether a/c is on or off. Truck is 2015 2500 6.4 with 1600 miles. Any ideas?

 

[Andy578]

mine sounded like the dash but was the wheel well liner

 

[zeddy]

Was there a fix? What should I look for?

 

[zeddy]

I checked under the hood and it's coming from one of the belts.

 

[craigsez]

my buddy sez to add a whistler delete button and go back for more beer..