This is the first I have heard of this brake issue. Have you asked other Chevrolet dealerships in your area what they may have heard or know?
That aside, do not think it is a wise idea to make a claim about a mysterious brake issue & then a complaint about a Ford dealer giving you a lowball trade in offer all in the same night.
http://www.camaro6.com/forums/showth...=485221&page=6