GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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

Caution: For safety reasons, the Brake Pressure Modulator Valve (BPMV) must not be repaired; the complete unit must be replaced. With the exception of the EBCM/EBTCM, no screws may be loosened. If screws are loosened, it will not be possible to get the brake circuits leak-tight and personal injury may result.

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


    Object Number: 230405  Size: SH
  1. Turn the ignition switch to the OFF position.
  2. Remove the attaching bolts for the cruise control module, if equipped.
  3. Swing the cruise control module off to the side, if equipped.
  4. Remove the air cleaner housing from the engine compartment. Refer to Air Cleaner Assembly Replacement for the 3.5L engine or Air Cleaner Assembly Replacement for the 3.6L engine.
  5. Disconnect the electronic brake control module (EBCM) harness connector (1).
  6. Disconnect the EBCM to brake pressure modulator valve (BPMV) connector.

  7. Object Number: 777629  Size: SH

    Important: Note the locations of the brake pipes in order to aid in installation.

  8. Disconnect the 4 wheel brake pipes from the BPMV.
  9. Swing the 4 wheel brake pipes out of the way only after covering the open pipes to avoid dripping or being contaminated.

  10. Object Number: 777628  Size: SH
  11. Disconnect the master cylinder brake pipes from the BPMV.
  12. Loosen the brake pipes, but do not remove the brake pipes from the master cylinder.
  13. Swing the 2 master cylinder brake pipes out of the way only after covering the open pipes to avoid dripping or being contaminated.

  14. Object Number: 648180  Size: SH
  15. Remove the 2 lower BPMV mounting bracket nuts (2) from the inner wheel housing mount surface of the strut tower.
  16. Loosen the top BPMV mounting nut.
  17. Remove the BPMV mounting bracket and the EBCM assembly from the vehicle by sliding up and toward the engine to separate from the wheelhouse slot.

  18. Object Number: 777630  Size: SH

    Notice: When removing the brake pressure modulator valve, protect the vehicle exterior from possible brake fluid spillage. Brake fluid can cause damage to painted surfaces.

  19. Remove the 2 bolts (1) that connect the BPMV to the mounting bracket (2).
  20. Remove the EBCM if replacing the BPMV only. Refer to Electronic Brake Control Module Replacement.

Installation Procedure


    Object Number: 777630  Size: SH
  1. Install EBCM onto the BPMV (1) if replacing the BPMV only. Refer to Electronic Brake Control Module Replacement.
  2. Install BPMV and EBCM as an assembly to the mounting bracket.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the 2 bolts (1) that connects the BPMV assembly to the mounting bracket (2).
  5. Tighten
    Tighten the bolts to 10 N·m (84 lb in).


    Object Number: 648180  Size: SH
  6. Install the BPMV bracket to the strut tower.
  7. Install the 3 nuts (2) that attach the BPMV mounting bracket to the strut tower.
  8. Tighten

        • Tighten the nuts to 10 N·m (89 lb in).
        • Reposition any lines or hoses that were moved out of place.

    Object Number: 777628  Size: SH

    Caution: Make sure brake pipes are correctly connected to brake pressure modulator valve. If brake pipes are switched by mistake, wheel lockup will occur and personal injury may result. The only two ways this condition can be detected are by using a Scan Tool or by doing an Antilock stop.

    Important: If a new BPMV is being installed, remove the shipping plugs from the valve openings during the next few steps, when ready.

  9. Install the master cylinder brake pipes into the BPMV.
  10. Tighten
    Tighten the fittings to 24 N·m (18 lb ft).


    Object Number: 777629  Size: SH
  11. Install the 4 wheel brake pipes on the BPMV.
  12. Tighten
    Tighten the fittings to 25 N·m (18 lb ft).

  13. Connect the EBCM to BPMV connector.

  14. Object Number: 230405  Size: SH
  15. Connect the EBCM harness connector.
  16. Reinstall the air cleaner housing. Refer to Air Cleaner Assembly Replacement for the 3.5L engine or Air Cleaner Assembly Replacement for the 3.6L engine.
  17. Reinstall the cruise control module, if equipped.
  18. When all procedures have been completed, the automated ABS bleed procedure is required. Refer to Antilock Brake System Automated Bleed Procedure.