Brake Pads
MANUFACTURER RECOMMENDATIONS
GM replacement brake or equivalent lining material is recommended for all vehicles to maintain the balance between front and rear brake performance. The manufacturer's replacement brake parts have been carefully selected to provide the proper brake balance for purposes of both stopping distance and control over the full range of operation conditions. Installation of front or rear brake lining material with performance different from that of the manufacturer's replacement parts recommended for this vehicle can change the intended brake balance of this vehicle.
NOTICE: Inner and outer pads must be new or parallel. Parking brake adjustment is not valid with tapered pads, and may cause caliper/parking brake binding. This will result in overheating and possible damage of the brake linings, rotor, and/or caliper.
REMOVE OR DISCONNECT
1. Two-thirds of the brake fluid from master cylinder.
2. Raise vehicle and suitably support.
3. Mark relationship of wheel to hub.
4. Tire and wheel.
- Install two wheel nuts to retain rotor.
5. Push piston onto caliper bore to provide clearance between pads and rotor.
A. Install a large C-clamp over top of caliper housing and against back of outboard pad.
B. Slowly tighten C-clamp until piston is pushed into the caliper bore enough to slide the caliper off rotor.
6. Lower caliper bolt.
7. Rotate caliper up enough to access pads.
8. Pads from caliper bracket.
9. Two retainers from caliper bracket.
Inspect
- Bolt boots for cuts, tears, or deterioration.
^ Replace if damaged. Refer to "BRAKE CALIPER."
- Piston boot for cuts, tears, or deterioration. If damaged, replace boots. Refer to BRAKE CALIPER.
- Bolt boots in caliper bracket for cuts, tears, or deterioration. If damaged, replace bushing. Refer to BRAKE CALIPER.
- Caliper bolts for corrosion or damage.
^ If corrosion is found, use new parts including bushings when installing caliper.
^ Do not attempt to polish away corrosion.
Important: Before installing new brake pads, wipe outside surface of caliper boot clean. Use denatured alcohol.
INSTALL OR CONNECT
NOTICE: Always use the correct fastener in the proper location. When you replace a fastener, use ONLY the exact part number for that application. the manufacturer will call out those fasteners that require a replacement after removal. The manufacturer will also call out the fasteners that require thread lockers or thread sealant. UNLESS OTHERWISE SPECIFIED, do not use supplemental coatings (paints, greases, or other corrosion inhibitors) on threaded fasteners or fastener joint interfaces. Generally, such coatings adversely affect the fastener torque and the joint clamping force, and may damage the fastener. When you install fasteners, use the correct tightening sequence and specifications. Following these instructions can help you avoid damage to parts and systems.
1. Bottom piston into caliper bore, using a C-clamp if new brake pads are to be installed.
- Using C-clamp, clamp piston at the same time with a metal plate or wooden block across face of piston. Take care not to damage piston or caliper boot.
Important: After bottoming piston, lift inner edge caliper boot next to piston and press out any trapped air. Boot must lay flat below the level of the piston face.
2. Two retainers to caliper bracket.
3. Pads to caliper bracket.
Important: Wear sensor is on the outside pad. Sensor is positioned at the leading edge (upward) of the pad during forward wheel rotation.
NOTICE: Use care to avoid damaging pin boot when rotating caliper.
4. Caliper down onto pads.
5. Lower caliper bolt.
- Tighten caliper bolts to 85 Nm (63 ft. lbs.).
6. Remove wheel nuts securing rotor to hub.
7. Tires and wheels.
- Align previous marks on wheel and hub.
8. Lower vehicle.
9. Fill master cylinder to proper level with clean brake fluid.
10. Apply approximately 778 N (175 lbs.) force three times to brake pedal to seat pads.
11. Burnish pads and rotors. Refer to "BURNISHING PADS AND ROTORS."