GM Service Manual Online
For 1990-2009 cars only

Notice: Refer to Brake Caliper Notice in the Preface section.

Important: 

   • Replace all components included in the repair kits used to service this caliper.
   • Lubricate the rubber parts with clean brake fluid to ease assembly.
   • Do not use lubricated shop air on brake parts, as damage to the rubber components may result.
   • If any hydraulic component is removed or disconnected, it may be necessary to bleed all or part of the brake system. Refer to Hydraulic Brake System Bleeding .
   • Replace the pads in axle sets only.
   • The torque values specified are for dry, unlubricated fasteners.
   • Perform the service operations on a clean bench, free from all mineral oil materials.

The caliper has a single bore and is mounted to the steering knuckle with two mounting bolts. Hydraulic pressure, created by applying the brake pedal, is converted by the caliper to a stopping force. This force acts equally against the piston and the bottom of the caliper bore to move the piston outward and to slide the caliper inward, resulting in a clamping action on the rotor. This clamping action forces the linings against the rotor, creating friction to stop the vehicle.