Notice: Use only DOT-3 brake fluid from a clean, sealed container. Do not use any fluid from a container which is wet with water. Do not use DOT-5 silicone brake fluid. Improper brake fluid, mineral oil, or water in the fluid may cause the brake fluid to boil, or the rubber components to deteriorate. Keep all fluid containers capped to prevent contamination.

The master cylinder reservoir must be kept properly filled to insure adequate reserve, and to prevent air and moisture from entering the hydraulic system. Because of expansion due to heat absorbed from the brakes and the engine, do not overfill the reservoir. Do not add fluid if the brake hydraulic system is not leaking.

The master cylinder reservoir is part of the master cylinder assembly. The master cylinder assembly is located under the hood on the drivers side of the vehicle.

1. Thoroughly clean the master cylinder reservoir cover before removal in order to avoid getting dirt into reservoir.



2. Remove the cover and the diaphragm.
3. Add fluid as required in order to bring level to 20-26 mm (0.78-1.0 in) (1) below the filler neck inside the reservoir. Use Delco Supreme No. II Hydraulic Brake Fluid (GM P/N 12377967) or equivalent DOT-3 motor vehicle brake fluid.