GM Service Manual Online
For 1990-2009 cars only

This vehicle is equipped with the Delphi DBC 7 non-integral Antilock Brake System (ABS). The system employs two valves per channel, four channel system, to reduce the tendency of any wheel to lock-up. The purpose of the Delphi DBC 7 Antilock Brake System (ABS) is to minimize wheel slip during heavy braking. The Delphi DBC 7 performs this function by monitoring the speed of each wheel and controlling the brake fluid pressure to each wheel independently during a braking event. This allows the driver to retain directional stability and better steering capability.