After taking my dash halfway apart on my 06 Ram and putting everything back together, beliving a bird chirp type squeak was in there, i found a bolt sticking down from the cowl and rubbing on my master cylinder brake booster. I cut off a 1/4 in. of the bolt and it is cured. No more chirp-squeak. I hope this helps someone else.

 

haha, it's amazing how such little things from the factory can turn out to be the biggest pain in the rear, good find