For 1990-2009 cars

### Removal Procedure

Caution: Avoid taking the following actions when you service wheel brake parts:

• | Do not grind brake linings.

• | Do not sand brake linings.

• | Do not clean wheel brake parts with a dry brush or with compressed air.

Some models or aftermarket brake parts may contain asbestos fibers which can become airborne in dust. Breathing dust with asbestos fibers may cause serious bodily harm. Use a water-dampened cloth in order to remove any dust on brake parts. Equipment is available commercially in order to perform this washing function. These wet methods prevent fibers from becoming airborne.
1. Siphon 2/3 of the fluid from the master cylinder reservoir.
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
3. Remove the tire and wheel assembly from the vehicle. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
4. Press in the piston until the piston bottoms in its bore.
5. Remove the 2 caliper pin bolts (1,2).

Notice: Do not allow the brake components to hang from the flexible brake hoses. Damage to the brake hoses could result.

6. Remove the caliper assembly (2) from the caliper carrier. Suspend the caliper with a wire (1) in order to prevent damage to the brake hose.
7. Remove the following components from the caliper:

• | The pad wear indicator (1)

• | The 2 inner pad insulators (8,9)

• | The 2 outer pad insulators (4,5)

• | The inner brake pad (7)

• | The outer brake pad (3)

• | The 2 brake pad retainers (2,6)

8. Inspect the brake pads for wear. If the pad thickness is less than specification, replace the disc brake pads in axle sets.

Specification
The minimum brake pad lining thickness is 1 mm (0.039 in).

9. Inspect the 2 brake pad retainers for the following conditions:

• | Sufficient rebound

• | No deformation

• | No cracks

• | No wear

• | No rust

• | No dirt

• | If the retainers meet the above conditions, the retainers can be used again.

### Installation Procedure

1. Install the 2 brake pad retainers (2,6) to the caliper.
2. Install the front brake wear indicator (1) to the inner pad (7).
3. Apply Lubriplate® Lubricant, GM P/N 12346293, or an equivalent lubricant meeting the requirements of NLGI #2 Category LB or GC-LB to both sides of a new inner pad insulator (8).
4. Install the inner pad insulator (8) to the inner pad (7).
5. Install the inner pad insulator (9) to the inner pad insulator (8).
6. Apply Lubriplate® Lubricant, GM P/N 12346293, or an equivalent lubricant meeting the requirements of NLGI #2 Category LB or GC-LB to both sides of a new outer pad insulator (4).
7. Install the outer pad insulator (4) to the outer pad (3).
8. Install the outer pad insulator (5) to the outer pad insulator (4).
9. Install the inner brake pad (7) to the caliper with the wear indicator (1) facing upward.
10. Install the outer brake pad (3) to the caliper.
11. Install the caliper housing to the caliper bracket.
12. Apply Lubriplate® Lubricant, GM P/N 12346293, or an equivalent lubricant meeting the requirements of NLGI #2 Category LB or GC-LB to the caliper pin bolts.

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.

13. Install the 2 caliper pin bolts (1).

Tighten
Tighten the caliper pin bolts to 34 N·m (25 lb ft).

14. Install the tire and wheel assembly to the vehicle. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
15. Lower the vehicle.
16. Fill the master cylinder fluid reservoir. Refer to Master Cylinder Reservoir Filling in Hydraulic Brakes.
17. Burnish the pads and the rotors. Refer to Brake Pad and Rotor Burnishing .