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

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

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

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

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

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

Caution: Refer to Fastener Caution in the Preface section.

Tighten
10 N·m (89 lb in)

3

Front Disc Brake Caliper Piston Boot (Qty: 4)

4

Front Disc Brake Caliper Piston (Qty: 4)

Procedure

1. 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.
2. 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.

Tip

5

Front Disc Brake Caliper Piston Seal (Qty: 4)

Procedure

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

Procedure

1. 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.
2. 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.
3. Clean the brake caliper piston bore and seal counterbore, the caliper piston, and the caliper sleeves with denatured alcohol, or equivalent.
4. Bleed the brake system anytime the system is opened for repairs. Refer to Hydraulic Brake System Bleeding.

Warning: Refer to DOT 4 Brake Fluid Warning in the Preface section.

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

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

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

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

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

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

Caution: Refer to Fastener Caution in the Preface section.

Tighten
10 N·m (89 lb in)

3

Front Disc Brake Caliper Piston Boot (Qty: 4)

4

Front Disc Brake Caliper Piston (Qty: 4)

Procedure

1. 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.
2. During installation apply a thin coat of brake and clutch fluid DOT-4 GM P/N 88958860 (Canadian P/N 88901244), or equivalent DOT-4 brake fluid from a clean, sealed brake fluid container onto the outer surface area of the caliper pistons.

Tip

5

Front Disc Brake Caliper Piston Seal (Qty: 4)

Procedure

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 brake and clutch fluid DOT-4 GM P/N 88958860 (Canadian P/N 88901244), or equivalent DOT-4 brake fluid from a clean, sealed brake fluid container.

6

Front Disc Brake Caliper

Procedure

1. 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.
2. 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.
3. Clean the brake caliper piston bore and seal counterbore, the caliper piston, and the caliper sleeves with denatured alcohol, or equivalent.
4. Bleed the brake system anytime the system is opened for repairs. Refer to Hydraulic Brake System Bleeding.