Assembly Procedure

Lubricate the new piston seal (3) with brake fluid from a clean, sealed brake fluid container. Refer to Adhesives, Fluids, Lubricants and Sealers for the recommended brake fluid.

Fig 1: Exploded View Of Brake Caliper
Courtesy of GENERAL MOTORS COMPANY
Install the lubricated, new piston seal (3) into the caliper bore.
Apply a thin coat of brake fluid from a clean, sealed brake fluid container. Refer to Adhesives, Fluids, Lubricants and Sealers for the recommended brake fluid.
Install the bottom half of the caliper piston (2) into the caliper bore.

Fig 2: View Of Caliper Piston And Caliper Piston Dust Boot Seal
Courtesy of GENERAL MOTORS COMPANY
Install the new piston dust boot seal (1) over the caliper piston (2).
Compress the caliper piston (2) to the bottom of the caliper bore.
Fully seat the piston dust boot seal (1) into caliper counterbore.
Install the bleeder valve to the caliper and tighten the valve to 17 N.m (13 lb ft).
CAUTION: Refer to Fastener Caution .
Install the bleeder valve cap.
Install the brake caliper to the vehicle. Refer to Front Brake Caliper Replacement .