GM Service Manual Online
For 1990-2009 cars only

Object Number: 1562288  Size: MF

Callout

Component Name

Caution: Refer to Bleed Procedure Caution in the Preface section.

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

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Caution: Refer to Eye Protection Caution in the Preface section.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.

Notice: Refer to Fastener Notice in the Preface section.

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications .

Preliminary Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the front disc brake caliper. Refer to Front Brake Caliper Replacement .

1

Front Brake Bleeder Valve Cap

2

Front Brake Bleeder Valve Screw

Tighten
10 N·m (89 lb in)

3

Front Disc Brake Caliper Piston Boot (Qty: 4)

4

Front Disc Brake Caliper Piston (Qty: 4)

Tip

    • Wear eye protection while performing these steps.
    • Do not use abrasives to clean the brake caliper piston or the disc brake caliper bore.
    • Place a block of wood against the inside of the caliper body, opposite of the caliper piston, then direct low pressure compressed air through the caliper inlet port to remove the caliper piston. Repeat for each of the pistons, until all the pistons are removed from the caliper bores.
    • During installation apply a thin coat of Delco® Supreme 11 GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container onto the outer surface area of the caliper pistons.

5

Front Disc Brake Caliper Piston Seal (Qty: 4)

Tip

  1. Use a small wooden or plastic tool, carefully remove the rear disc brake caliper piston seal from the groove in the caliper seal bore.
  2. During installation lubricate the new piston seals with Delco® Supreme 11 GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.

6

Front Disc Brake Caliper

Tip

    • Inspect the caliper bore and housing for cracks, scoring, pitting, excessive rust, and/or excessive corrosion. If any of these conditions are present in the caliper bore or housing, replace the caliper assembly.
    • If light rust or light corrosion are present in the caliper bore, attempt to remove the imperfection with a fine emery paper. If the imperfection cannot be removed, replace the caliper assembly.
    • Clean the brake caliper piston bore and seal counterbore, the caliper piston, and the caliper sleeves with denatured alcohol, or equivalent.
    • Bleed the brake system anytime the system is opened for repairs. Refer to Hydraulic Brake System Bleeding .