GM Service Manual Online
For 1990-2009 cars only

Warning: Refer to Brake Dust Warning in the Preface section.

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

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.

  1. Disconnect the negative battery cable.
  2. Remove the electrical connector.
  3. Remove the brake lines from the brake pressure modulator valve (BPMV).

  4. Object Number: 805985  Size: SH
  5. Remove the bolts that fasten the electronic brake control module (EBCM) to the BPMV.
  6. Caution: Do not use a tool to pry the EBCM from the BPMV. Excessive force will damage the EBCM.

  7. Remove the EBCM from the BPMV. Removal may require a light amount of force.
  8. Remove the BPMV mounting bracket nuts and washers.
  9. Remove the BPMV from the electric hydraulic control unit (EHCU) mounting bracket.
  10. Clean the BPMV with a clean, dry cloth.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.

    Note: Do not reuse the EBCM mounting bolts. Always install new EBCM mounting bolts with the new EBCM.

  1. Install the BPMV onto the EHCU mounting bracket.
  2. Tighten
    Tighten the BPMV mounting bolts to 9 N·m (7 lb ft).


    Object Number: 805985  Size: SH
  3. Install EBCM to BPMV.
  4. Install the new EBCM bolts.
  5. Tighten
    Tighten the bolts to 2 N·m (18 lb in) in an X-pattern.

  6. Install the electrical connector.
  7. Install the EHCU to the vehicle.
  8. Connect the negative battery cable.
  9. Bleed the brake system. Refer to Hydraulic Brake System Bleeding.