GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2001 🢒 Regal (China) 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Rear Brake Caliper Replacement

Removal Procedure
  1. Remove one-third of the brake fluid from the master cylinder.
  2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the rear tires and the wheels. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.

    4. Hand tighten a wheel lug nut to a wheel stud to secure the rotor to the hub.


    Object Number: 178630 Size: SH
  4. Install a large C-clamp over the top of the brake caliper (2) and against the back of the outboard brake pad.
  5. Tighten the C-clamp until the caliper piston is pushed into the caliper bore enough to slide the caliper off the rotor.

    6. Object Number: 176035 Size: SH
  6. Remove the brake hose bolt (1) that attaches the rear brake hose (2) to the caliper.

    7. Discard the old copper gaskets (3).

  7. Plug the rear brake hose (2) in order to prevent excessive brake fluid loss and contamination.

    8. Do not pinch off the brake hose with any tools.


    Object Number: 176946 Size: SH
  8. Remove the caliper bolts (1 and 3).
  9. Remove the caliper housing (3) from the rotor (4) and the caliper bracket (1).
  10. Inspect the caliper bracket bolt boots on the caliper bracket for the following conditions:
    11. • Cuts
    • Tears
    • Deterioration
    • Replace the caliper bracket bolt boots if damage exists. Refer to Rear Disc Brake Hardware Replacement .
  11. Inspect the caliper bolts (2) for corrosion or damage. Do not attempt to polish away corrosion. If corrosion is found, use new parts, including bushings, when installing caliper.

Installation Procedure

    Object Number: 176946 Size: SH
  1. Install the caliper (3) over the rotor (4) and the caliper bracket (1). Ensure that the bushings are in place.

    2. Object Number: 176945 Size: SH
  2. Lubricate the caliper bolts (1 and 3). Use silicone grease. Do not lubricate the threads.
  3. Lubricate the two bolt boots (13 and 4) in the caliper bracket (12). Use silicone grease.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the caliper bolts (1 and 3). 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.

    5. Tighten
    Tighten the caliper bolts to 44 N·m (32 lb ft).


    Object Number: 176035 Size: SH
  5. Install the rear brake hose (2) and the brake hose bolt (1) to the caliper. Be sure to use new copper gaskets (3).

    6. Tighten
    Tighten the brake hose bolt to 54 N·m (40 lb ft).

  6. Remove the hand tightened wheel lug nut that is securing the rotor to the hub.
  7. Install the rear tires and the wheels. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  8. Lower the vehicle.
  9. Fill the master cylinder to the proper level with clean brake fluid. Refer to Master Cylinder Reservoir Filling in Hydraulic Brakes.
  10. Bleed the brake system. Refer to Hydraulic Brake System Bleeding in Hydraulic Brakes.
  11. Inspect the hydraulic brake system for brake fluid leaks.