I have a vibrating sound coming from where my dash meets the windshield in the center of the truck. Sounds like its coming from the inside but I haven't been able to find it. Anyone else experience this?

 

Check the plastic cover around your wipers.

 

Do they become loose...is there a screw or bolt or something to look for? Thanks!

 

I have this problem. Took it to the dealership and they said somtimes the felt ( or whatever it is) under the plastic dash pieces works its way loose. So they added a new piece of felt and it made it better. I then cut pieces of velcro and inserted them in the cracks between the plastic pieces and along the window area. That has fixed the problem significantly. Be careful with the plastic pieces and the windshield, those gaps are pretty big and you may want to buy a rubber gasket or small plastic/rubber hose to insert in between. Be patient and work the velcro or rubber pieces in slowly. Good luck.