GM Service Manual Online
For 1990-2009 cars only

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

Removal Procedure


    Object Number: 1977787  Size: SH
  1. Remove the power brake booster (1). Refer to Power Brake Booster Replacement.

  2. Object Number: 1977792  Size: SH
  3. Remove the master cylinder reservoir (1). Refer to Master Cylinder Reservoir Replacement.

  4. Object Number: 1977794  Size: SH
  5. Remove the brake pressure modulator valve (BPMV) gasket (1) and the BPMV module (2) from the master cylinder. Refer to Electronic Brake Control Module with Brake Pressure Modulator Valve Replacement.

Installation Procedure


    Object Number: 1977794  Size: SH
  1. Install the BPMV gasket (1) and the BPMV module (2) to the master cylinder. Refer to Electronic Brake Control Module with Brake Pressure Modulator Valve Replacement.

  2. Object Number: 1977792  Size: SH
  3. Install the master cylinder reservoir (1). Refer to Master Cylinder Reservoir Replacement.

  4. Object Number: 1977787  Size: SH
  5. Install the power brake booster (1). Refer to Power Brake Booster Replacement.