GM Service Manual Online
For 1990-2009 cars only

Rear Disc Brake Pads Replacement Z7U


Object Number: 1766034  Size: MF

Callout

Component Name

Caution: Refer to Brake Dust Caution in the Preface section.

Notice: Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

Preliminary Procedures

  1. Inspect the fluid level in the brake master cylinder reservoir.
  2. If the brake fluid level is midway between the maximum-full point and the minimum allowable level, no brake fluid needs to be removed from the reservoir before proceeding.
  3. If the brake fluid level is higher than midway between the maximum-full point and the minimum allowable level, remove brake fluid to the midway point before proceeding.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation .

1

Bolt, Brake Caliper Pin (Qty: 2)

Notice: Refer to Fastener Notice in the Preface section.

Tighten
60 N·m (44 lb ft)

2

Caliper, Brake

Tip

    • Support the brake caliper with heavy mechanics wire or equivalent.
    • Place a block of wood or an old brake pad against the brake caliper piston.
    • Using a brake pad spreader tool or equivalent, slowly compress the brake caliper piston squarely into the brake caliper bore.

3

Pads, Disc Brake

4

Retainer, Brake Pad Spring

Tip

  1. If replacing the brake pads, DO NOT reuse the spring retainers. Install NEW retainers.
  2. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
  3. Slowly release the brake pedal.
  4. Wait 15 seconds, then repeat steps 2-3 until a firm brake pedal is obtained. This will properly seat the brake caliper pistons and the brake pads.
  5. Fill the master cylinder reservoir to the proper level. Refer to Master Cylinder Reservoir Filling .
  6. Burnish the pads and rotors. Refer to Brake Pad and Rotor Burnishing .

Rear Disc Brake Pads Replacement J65, JL9


Object Number: 1765740  Size: MF

Callout

Component Name

Caution: Refer to Brake Dust Caution in the Preface section.

Notice: Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

Preliminary Procedures

  1. Inspect the fluid level in the brake master cylinder reservoir.
  2. If the brake fluid level is midway between the maximum-full point and the minimum allowable level, no brake fluid needs to be removed from the reservoir before proceeding.
  3. If the brake fluid level is higher than midway between the maximum-full point and the minimum allowable level, remove brake fluid to the midway point before proceeding.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  5. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation.

1

Bolt, Brake Caliper Guide Pin (Qty: 1)

Notice: Refer to Fastener Notice in the Preface section.

Tighten
34 N·m (25 lb ft)

2

Caliper, Brake

Tip

    • Release the wheel speed sensor (WSS) harness clip from the lower control arm.
    • Position the brake caliper aside and support with heavy mechanics wire or equivalent.
    • Using a spanner-type caliper piston wrench, rotate the brake caliper piston until it is fully seated into the caliper bore.
    • Align the indentations on the caliper piston with the pin on the brake pad backing plate.

3

Pads, Brake

4

Shims, Brake Pad (Qty: 2)

Tip

  1. If installing new brake pads, discard the brake pad shims. Install NEW shims.
  2. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
  3. Slowly release the brake pedal.
  4. Wait 15 seconds, then repeat steps 2-3 until a firm brake pedal is obtained. This will properly seat the brake caliper piston and the brake pads.
  5. Fill the master cylinder reservoir to the proper level. Refer to Master Cylinder Reservoir Filling.
  6. Burnish the pads and rotors. Refer to Brake Pad and Rotor Burnishing.