Brakes and Traction Control: Service and Repair

CAUTION: Use only Delco Supreme II Brake Fluid (GM P/N 1052535) or an equivalent DOT-3 motor vehicle brake fluid.

The master cylinder reservoir is part of the master cylinder assembly, which is located under the hood on the drivers side of the vehicle. The master cylinder reservoir must be kept properly filled to insure adequate reserve and to prevent air and moisture from entering the hydraulic system. However, because of expansion due to heat absorbed from the brakes and the engine, the reservoir must not be overfilled. Do not add fluid if brake hydraulic system is not leaking.

Thoroughly clean the master cylinder reservoir cover before removal to avoid getting dirt into reservoir. Remove the cover and diaphragm and add fluid as required to bring level to 20-26 mm (0.78-1.0 inches) below filler neck inside reservoir. Use Delco Supreme No. II Hydraulic Brake Fluid (GM P/N 1052535) or equivalent DOT-3 motor vehicle brake fluid.