Brake Caliper Replacement Rear

Important: Refer to Disc Brakes System Description .

1. Remove two-thirds of the brake fluid from the master cylinder reservoir.
2. Raise the vehicle and support the vehicle with proper safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
3. Remove the tire and wheel assembly. Refer to Wheel Removal in Tires and Wheels.
4. Position a C-clamp over the outer brake pad and the caliper.

4.1.	Tighten the C-clamp until the piston bottoms in the caliper bore.

4.2.	Remove the C-clamp.




5. Disconnect the brake hose from the caliper.

5.1.	Disconnect the brake hose fitting and two gaskets.

5.2.	Discard the gaskets.

5.3.	Plug the hole in the caliper housing, and in the brake hose fitting.




6. Remove the guide pin bolts.
7. Remove the caliper from the bracket.

1. Inspect the guide pin bolts and sleeves for corrosion.

Replace corroded guide pin bolts and sleeves.

2. Inspect the brake hose fitting bolt. If the through-hole is blocked, remove the blockage or replace the bolt.
3. Inspect the linings for wear. Replace as necessary. Refer to Brake Pad Inspection .
4. Inspect the caliper. Refer to Brake Caliper Inspection .

Caution: Do not move the vehicle until a firm brake pedal is obtained. Failure to obtain a firm pedal before moving vehicle may result in personal injury.

1. Verify that the linings are in position.




Important: Lift the inner edge caliper boot next to the piston. Press out any trapped air. The boot must lay flat below the level of the piston face.

2. Install the caliper over the rotor and into the anchor bracket.
3. Lubricate the guide pin bolts with Delco Silicone Lube (GM P/N 18010909) or equivalent.




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.

4. Install the two caliper guide pin bolts to the caliper bracket.

Tighten
Tighten the bolt to 31 N·m (23 lb ft).

Notice: Make sure the brake hose is not twisted or kinked after installation. Damage to the hose could result.




5. Install the following components:

•	The brake hose fitting

•	The two new gaskets

•	The brake hose fitting bolt

Tighten
Tighten the brake hose bolt to 54 N·m (40 lb ft).

6. Bleed the caliper. Refer to Hydraulic Brake System Bleeding in Hydraulic Brakes.
7. Install the tire and wheel assembly. Refer to Wheel Removal in Tires and Wheels.
8. Remove the safety stands and lower the vehicle.
9. With the engine running, firmly pump the brake pedal three times.
10. Check the brake system for leaks.

Brake Caliper Replacement Front

1. Remove two-thirds of the brake fluid from the master cylinder reservoir.
2. Raise the vehicle and support the vehicle with proper safety stands.



3. Mark the relationship of the wheel to the hub.
4. Remove the tire and wheel assembly. Refer to Wheel Removal in Tires and Wheels.



5. Position a C-clamp over the outer brake shoe and the caliper.

5.1.	Tighten the C-clamp until the piston bottoms in the caliper bore.

5.2.	Remove the C-clamp.




6. Disconnect the brake hose from the caliper.



7. Remove the caliper mounting bolts.
8. Remove the caliper.

1. Inspect the mounting bolts and sleeves for corrosion. Do not polish away any corrosion.
2. Replace corroded mounting bolts and sleeves.

1. Lubricate the sleeves and bushings with silicone lubricant or equivalent.
2. Install the bushings and sleeves in the caliper.




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.

3. Install the caliper and the two mounting bolts.

Tighten
Tighten the mounting bolts to 50 N·m (37 lb ft).




4. Connect the brake hose to the caliper.

Notice: Make sure the brake hose is not twisted or kinked after installation. Damage to the hose could result.

Tighten
Tighten the brake hose fitting to 44 N·m (32 lb ft).




5. Measure the clearance between the caliper and the steering knuckle.

5.1.	Measure each end of the caliper individually and add the two measurements together.

5.2.	The total measurement should be 0.26-0.60 mm (0.010-0.024 in).

6. Install the tire and wheel assembly. Refer to Tire and Wheel Installation in Tires and Wheels.
7. Lower the vehicle and remove the safety stands.

Important: Before moving the vehicle, pump the brake pedal several times in order to make sure the pedal is firm. Do not move the vehicle until you get a firm brake pedal. Check the brake fluid level in the master cylinder reservoir after pumping the brake pedal.