GM Service Manual Online
For 1990-2009 cars only

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Caution: Do not overfill the brake fluid reservoir. Overfilling the brake fluid reservoir may cause the brake fluid to overflow onto the engine exhaust components during brake system service. The brake fluid is flammable and may cause a fire and personal injury if the brake fluid contacts the engine exhaust system components.

Caution: Refer to Brake Fluid Caution in the Preface section.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.

Notice: Refer to Filling the Master Cylinder Notice in the Preface section.


    Object Number: 171780  Size: SH
  1. Thoroughly clean the reservoir cap before removal in order to avoid getting dirt into the reservoir.
  2. Remove the master cylinder brake fluid reservoir cap.
  3. Important: The brake fluid level MUST be between the MAX mark and the MIN mark for the following reasons:

       • In order to ensure adequate brake fluid reserve
       • In order to prevent air from entering the hydraulic brake system
       • In order to allow the brake fluid to expand due to the heat from the brakes and the engine

  4. Fill the reservoir until the fluid reaches the MAX mark.
  5. Install the reservoir cap.