GM Service Manual Online
For 1990-2009 cars only

Flushing is done at each bleeder valve similar to the bleeding procedure.

  1. Open the bleeder valve 1½ turns until the fluid forced through the pipes, hoses and bleeder valves comes out clear in color. Refer to Hydraulic Brake System Bleeding .
  2. Check the fluid level in the master cylinder. Refill as required. Refer to Master Cylinder Reservoir Filling .