GM Service Manual Online
For 1990-2009 cars only

Filling Procedure

Notice: 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.


    Object Number: 375327  Size: SH
  1. Thoroughly clean the master cylinder reservoir cover before removal. This prevents dirt from entering the reservoir.
  2. Remove the brake master cylinder cover and diaphragm.
  3. Add brake fluid in order to fill the reservoir to the full mark. The full mark is located inside the brake master cylinder reservoir. Use the correct fluid. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.