GM Service Manual Online
For 1990-2009 cars only

Special Tools

CH-47830 Holding Fixture

Removal Procedure

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


    Object Number: 1977780  Size: SH
  1. Remove the brake master cylinder and power brake booster assembly. Refer to Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement.
  2. Install the CH-47830  (1)  to the master cylinder assembly.
  3. Position the CH-47830 with the master cylinder assembly in a vise.

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

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

  8. Object Number: 1977793  Size: SH
  9. Remove the brake pressure modulator valve (BPMV) bolts (1).

  10. Object Number: 1977794  Size: SH
  11. Remove the BPMV gasket (1) and the BPMV module assembly (2).
  12. Discard the BPMV gasket.


    Object Number: 1977736  Size: SH
  13. Remove the brake fluid level sensor bracket bolt (1) and bracket (2) from the BPMV module assembly.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1977736  Size: SH
  1. Install the brake fluid level sensor bracket bolt (1) and bracket (2) to the BPMV module assembly.
  2. Tighten
    Tighten the bolt to 8 N·m (71 lb in).


    Object Number: 1977794  Size: SH
  3. Install a new BPMV gasket (1) and the BPMV module assembly (2).
  4. Important: Hand install the BPMV module assembly bolts prior to tightening the bolts to properly locate the BPMV module assembly.


    Object Number: 1977793  Size: SH
  5. Install the BPMV bolts (1).
  6. Tighten
    Tighten the bolts to 32 N·m (24 lb ft).


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

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

  10. Object Number: 1977780  Size: SH
  11. Remove the CH-47830  (1)  from the master cylinder assembly.
  12. Install the brake master cylinder and power brake booster assembly. Refer to Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement.
  13. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding.
  14. Refer to Control Module References for programming and setup information.