Thanks for the suggestions. Now I've got another problem. I have disc brakes on the front ( 4 piston calipers) and I have lost the pin (apparently fell out or broke) that holds the pads in place in the caliper. I have checked all the local parts suppliers and even the specialty suppliers like Ames and Classic Industries and nobody has the part. Any suggestions on where to find a replacement pin. They are not available from GM either.