GM Service Manual Online
For 1990-2009 cars only

CAUTION:: This system operates using fluid pressure up to 12 400 kPa (1800 psi). Some malfunctions can cause this pressure to be trapped in the system. Use caution when loosening pipe fittings on a system that does not work or personal injury can result.

    • Turn the ignition switch OFF and disconnect the Powertrain Control Module (PCM) connector when doing welding work on the vehicle.
    • Do not use a fast charger for starting the engine.
    • Disconnect the negative battery cable when fast charging. Refer to Battery Disconnect Caution in Cautions and Notices.
    • Ensure all the wiring harness connectors are securely connected.

       Important: These items do not cover every possibility, but must be followed when working on the electric/auto parking brake system. When doing service work, become familiar with the system, and how the system interrelates with other components on the vehicle.

    •  Always note the routing, position, mounting, and location of the following parts when servicing the system:
       - Components
       - Wiring
       - Connectors
       - Clips
       - Brackets
       - Brake pipes