Okay i have a 2007 cobalt ss and it has around 55000 miles. When i pressed on the brakes it would make a noise as if it was grinding and i was told that it was because i have ceramic brakes and they do that.. It is annoying but i said whatever i changed my brakes and rotors at 54000 and when i drove no more noise when i press the brakes now its back? anybody have thiis problem? or know how to solve it? its annoying c=trying to cruise along and when you come to a stop your car breaks squeaks louder then your exhaust.. thanks