You can lubricate the new piston seal, install the lubricated, new piston seal, apply a thin coat of Delco Supreme 11(R), GM P/N 12377967 (Canadian P/N 992667), or equivalent, DOT-3 brake fluid onto the outer surface area of the caliper piston, install the bottom half of the caliper piston, install the new piston dust boot seal, compress the caliper piston, fully seat the piston dust boot seal into caliper counterbore, install the retaining ring, install the bleeder valve and cap, tighten the valve securely and install the rear brake caliper.
By BobGM Specialist
29/10/2022