Buzzing/vibration *possibly in dash

Anyone else get a buzzing/vibrating noise, doesn't happen all the time (happens when driving on the streets at regular speed).

I think it might be coming from the dash or near the mic (not sure if our trucks have a mic) the reason I say that is while definitely audible, doesn't sound super loud however when I'm on the phone via trucks bluetooth, every single person on the phone always says it sounds like a loud racket

So my questions are, where would the mic be if our trucks have one and has anyone else experienced the same?

 

Do you have anything in your sunglasses holder?

 

I get a rattle type sound on the left side of my dash somewhere. Almost sounds like static in the tweeter. But more metallic.

 

My truck doesn't have a sunglass holder

 

I’m getting the same thing. Got to find where its origin is coming from.