Parking Brake System: Service Precautions

CAUTION:
^ Do not lubricate the parking brake cables. Lubrication may damage the plastic coating on the parking brake cables.

^ Always use the correct fastener in the proper location. When you replace a fastener, use ONLY the exact part number for that application. General Motors will call out those fasteners that require a replacement after removal. General Motors 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.

^ Handling of these cables during servicing of the parking brake system requires extra care. Damage to the plastic coating will reduce corrosion protection and if the damaged area passes through the seal, increased parking brake effort could result. Contact of the coating with sharp-edged tools, or with sharp surfaces of the vehicle underbody, should be avoided.

^ To prevent damage to the threaded parking brake adjusting rod when servicing the parking brake, the following is recommended:

^ Before attempting to turn the adjusting nut, clean the exposed threads on each side of the nut.

^ Lubricate the threads of the adjusting rod before turning the nut.