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Brake Calipers: Installation

  1. If reusing the brake caliper pin bolts, wipe away any debris and old lubricant with a with a clean shop cloth. Apply lubricant, GM P/N 18047666, or equivalent, to the brake caliper pin bolts. Apply a thin layer to the pin bushing and to the caliper pin bolt shank. Ensure that there is not a buildup of excess lubricant at the end of the leading caliper pin, in front of the bushing.
  2. Install the caliper over the rotor and onto the caliper bracket. See Fig 1 . Install the caliper pin bolts. The leading caliper pin bolt, or top bolt, has a bushing as part of the assembly. The trailing caliper pin bolt, or bottom bolt, is a solid design. Ensure that the bolt boots fit securely in the groove of the caliper pin bolts. If the boots are damaged, they must be replaced. Tighten to specification. See TORQUE SPECIFICATIONS  .
  3. Assemble the brake hose bolt and the NEW copper brake hose gaskets to the brake hose. Install the brake hose-to-caliper bolt to the brake caliper. Tighten to specification. See TORQUE SPECIFICATIONS  .
  4. Remove the 2 wheel lug nuts retaining the rotor to the hub. Install the front tire and the wheel assembly. Lower the vehicle. Fill the master cylinder to the proper level with clean brake fluid. See MASTER CYLINDER RESERVOIR FILLING  .
  5. Bleed the brake system. See BLEEDING BRAKE SYSTEM  . Inspect the hydraulic brake system for brake fluid leaks.
Fig 1: Exploded View Of Front Brake Caliper Assembly
G99D04603Courtesy of GENERAL MOTORS CORP.


  1. Install the caliper over the rotor and the caliper bracket. Ensure that the bushings are in place. See Figure . Lubricate the caliper bolts. Use silicone grease. Do not lubricate the threads. Lubricate the 2 bolt boots in the caliper bracket. Use silicone grease.
  2. Install the caliper bolts. Ensure that the bolt boots fit securely in the groove of the caliper bolts. Be sure not to pinch or tear the boots. If the boots are damaged, they must be replaced. Tighten to specification. See TORQUE SPECIFICATIONS  .
    3. NOTE: Install NEW copper gaskets.
  3. Assemble the brake hose bolt and the NEW copper brake hose gaskets to the brake hose. Install the brake hose-to-caliper bolt to the brake caliper. Remove the 2 wheel lug nuts retaining the rotor to the hub. Install the rear tire and the wheel assembly. Lower the vehicle. Fill the master cylinder to the proper level with clean brake fluid. See MASTER CYLINDER RESERVOIR FILLING  .
  4. Bleed the brake system. See BLEEDING BRAKE SYSTEM  . Inspect the hydraulic brake system for brake fluid leaks.
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