GM Service Manual Online
For 1990-2009 cars only

Brake Pads Replacement Front

Removal Procedure

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

  4. Object Number: 105305  Size: SH

    Important: Do not use a screwdriver or pry bar to compress the caliper piston into the caliper. Any damage to the piston boot could cause corrosive elements to enter the piston sealing area and lead to the piston seizing in the caliper bore.

  5. Using a large C clamp compress the caliper piston into the caliper bore completely.

  6. Object Number: 493816  Size: SH
  7. Remove the bottom caliper pin bolt (1).

  8. Object Number: 105287  Size: SH
  9. Pivot the caliper body upward.

  10. Object Number: 493818  Size: SH
  11. Remove the inboard and outboard pads from the anchor bracket.

  12. Object Number: 142015  Size: SH
  13. Remove and inspect the pad retainers.

Installation Procedure


    Object Number: 142015  Size: SH

    Important: Inspect the caliper bolt suspension boots for cuts, tears, or deterioration. If damaged, replace the pin boots. Inspect the caliper pin bolts for damage or corrosion. Replace if damaged or corroded. Do not attempt to clean away corrosion. Corrosion is typically caused by damaged pin boots. Refer to Brake Caliper Bracket Overhaul . Inspect the piston boot for deterioration, replace if damaged. Refer to Front Brake Caliper Overhaul .

  1. Install the brake pad retainers into the caliper anchor bracket.

  2. Object Number: 493818  Size: SH
  3. Install both brake pads into the caliper anchor bracket.

  4. Object Number: 105283  Size: SH

    Important: The caliper piston boot must lay flat. Make sure convolutions are tucked into place.

  5. Use a small plastic or wooden tool (1) to lift the inner edge of the boot next to the piston (2), and press out any trapped air.

  6. Object Number: 105287  Size: SH
  7. Pivot the caliper down over the brake pads and into the anchor bracket.
  8. 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.


    Object Number: 493816  Size: SH
  9. Insert the lower caliper pin bolt (1).
  10. Tighten
    Tighten the caliper pin bolt to 27 N·m (20 lb ft).

  11. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  12. Lower the vehicle.
  13. Start the vehicle and apply approximately 778 N (175 lb) of force three times to the brake pedal to seat the brake caliper piston and brake pads.
  14. Refill the brake fluid. Refer to Master Cylinder Reservoir Replacement .
  15. Burnish the pads and rotors. Refer to Brake Pad and Rotor Burnishing .

Brake Pads Replacement Rear

Removal Procedure


    Object Number: 617277  Size: SH
  1. Remove two-thirds of the brake fluid from the master cylinder.
  2. Raise the vehicle and suitably support. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Important: Do not use a screwdriver or pry bar to compress the caliper piston into the caliper. Any damage to the piston boot could cause corrosive elements to enter the piston sealing area and lead to the piston seizing in the caliper bore.

    Important: Do not exceed more than 1 mm of piston travel. Damage to the internal adjusting mechanism may result.

  5. Using a large C clamp compress the caliper piston into the caliper bore to gain enough clearance to allow the caliper to pivot off the caliper bracket. Compress the piston until resistance is felt, but no more than 1 mm of piston travel.
  6. Disconnect the park brake cable bracket (2) from the brake caliper (1).
  7. Remove the park brake cable from the cable lever.
  8. Remove the bottom caliper pin bolt.

  9. Object Number: 105773  Size: SH
  10. Pivot the caliper body (6) upward.
  11. Remove the inboard (2) and outboard (3) pads from the anchor bracket  (5).
  12. Remove and inspect the pad retainers (1).

Installation Procedure


    Object Number: 105774  Size: SH

    Important: Inspect the caliper bolt suspension boots for cuts, tears, or deterioration. If damaged, replace the pin boots. Inspect the caliper pin bolts for damage or corrosion. Replace if damaged or corroded. Do not attempt to clean away corrosion. Corrosion is typically caused by damaged pin boots. Inspect the piston boot for deterioration, repair or replace the caliper if damaged. Refer to Rear Brake Caliper Overhaul or Brake Caliper Replacement .

  1. Retract the caliper piston (2) into the caliper bore. Use a spanner type wrench to turn the piston (2) clockwise until it bottoms out fully in the caliper.
  2. Align the cutouts in the caliper piston to the alignment pins on the back of the brake pad.

  3. Object Number: 105773  Size: SH
  4. Install the brake pad retainers (1) into the caliper anchor bracket (5).
  5. Install the inboard (2) and outboard (3) brake pads into the caliper anchor bracket.
  6. Important: The caliper piston boot must lay flat. Make sure convolutions are tucked into place.


    Object Number: 105283  Size: SH
  7. Use a small plastic or wooden tool (1) to lift the inner edge of the boot (2) next to the piston, and press out any trapped air.
  8. Pivot the caliper down over the brake pads and into the anchor bracket.
  9. 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.

  10. Insert the lower caliper pin bolt.
  11. Tighten
    Tighten the caliper pin bolt to 27 N·m (20 lb ft).


    Object Number: 617277  Size: SH
  12. Install the park brake cable bracket (2) to the brake caliper (1).
  13. Connect the park brake cable to the park brake lever on the caliper (1).
  14. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  15. Lower the vehicle.
  16. Start the vehicle and apply approximately 778 N (175 lb) of force three times to the brake pedal to seat the brake caliper piston and brake pads.
  17. Refill the brake fluid. Refer to Master Cylinder Reservoir Replacement .
  18. Burnish the pads and rotors. Refer to Brake Pad and Rotor Burnishing .