GM Service Manual Online
For 1990-2009 cars only
  1. Fill the reservoir with brake fluid. Ensure that the reservoir remains full throughout the entire bleeding process.
  2. Install adapters into each master cylinder outlet port.
  3. Attach a piece of plastic tubing to each adapter. Submerge the other ends of the tubing in the reservoir. Ensure that the tubes remain submerged in the fluid.
  4. Using a wooden or plastic dowel, slowly push in the master cylinder piston and release. Repeat the process until air (bubbles) is no longer present in the brake fluid.