Anybody Know About The Service Bulletin Thats Supposed To Be Available To Fix The Annoying Squeaking,grinding,chirping Noises From The Rear Brakes On 08 Electras. Was At Local Dealer And Was Told That There Is A Tsb Out On The Problem And They Now Have Me Scheduled For Next Saturday To Take Care Of It.just Was Wondering If Anybody Else Is Having The Same Problem?