I have a 04 ss and i have only had it for a year and its time to start thinking of brakes. I went to the part store and they didn't have a silveardo ss in the books for brakes the best they could do was ask me if it had two pistons or one. I didn't know and i dont want to rip it apart to find out then put it back together to go get parts just to take it apart again. Any one know? I was also thinking of up grading the brakes I would like to hear from the people who have had one for awhile the best way to go thanks!