GM Service Manual Online
For 1990-2009 cars only

Caution: Do not use fluid that has a petroleum base. Do not use a container that has been used for petroleum based fluids or is wet with water. Petroleum-based fluids cause swelling and distortion of rubber parts in the hydraulic brake system and water lowers the brake fluid's boiling point. Keep all fluid containers capped to prevent contamination.

    Note: The fluid level in the master cylinder reservoir is an indication of the brake system condition. If the fluid level is low, verify that the following conditions are present before filling:

       • No brake fluid leaks are present.
       • The brake linings are not worn out.

  1. Thoroughly clean the master cylinder reservoir cap before removal. This prevents dirt from entering the reservoir.

  2. Object Number: 604042  Size: SH
  3. Remove the cap.
  4. Use DOT 3 motor vehicle brake fluid in order to fill the reservoir to the MAX mark. The MAX mark is located on the outside of the reservoir.