GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2009 🢒 Montana SV6 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Brake Pressure Modulator Valve Replacement

Removal Procedure

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

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

    Warning: 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.

  1. Turn the ignition switch to the OFF position.
  2. Remove the air cleaner assembly from the engine compartment. Refer to Air Cleaner Assembly Replacement.

    3. Object Number: 1544732 Size: SH
  3. Disconnect the electronic brake control module (EBCM) harness connector (2).

    4. Object Number: 1542699 Size: SH

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

  4. Disconnect the 4 wheel brake pipes and 2 master cylinder pipes from the brake pressure modulator valve (BPMV).
  5. Cover the open pipes to avoid dripping of brake fluid or contamination of the brake system.

    6. Object Number: 648180 Size: SH
  6. Remove the BPMV mounting bracket nuts (2) from the inner wheel housing mount surface of the strut tower.
  7. Reinstall the top nut upside down on the top stud.
  8. Lightly tap on the bottom of the nut until the stud has loosened up.
  9. Remove the BPMV mounting bracket and EBCM assembly from the vehicle.

    10. Object Number: 1542701 Size: SH

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

  10. Remove the bolt that connects the BPMV to the mounting bracket.
  11. Lift the BPMV off the mounting bracket studs.
  12. Remove EBCM if replacing the BPMV only. Refer to Electronic Brake Control Module Replacement.

Installation Procedure
  1. Install EBCM onto the BPMV if replacing the BPMV only. Refer to Electronic Brake Control Module Replacement.

    2. Object Number: 1542701 Size: SH
  2. Install BPMV and EBCM as an assembly onto the mounting bracket studs.

    3. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the bolt that connects the BPMV assembly to the mounting bracket and tighten to 10 N·m (89 lb in).

    4. Object Number: 648180 Size: SH
  4. Install the BPMV bracket to the strut tower.
  5. Install the 3 nuts (2) that attach the BPMV mounting bracket to the strut tower and tighten to 10 N·m (89 lb in).

    6. Reposition any lines or hoses that were moved out of place.


    Object Number: 1542699 Size: SH

    Warning: 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.

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

  6. Install the master cylinder brake pipes into the BPMV and tighten the fittings to 27 N·m (20 lb ft).
  7. Install the wheel brake pipes on the BPMV and tighten the fittings to 20 N·m (15 lb ft).

    8. Object Number: 1544732 Size: SH
  8. Connect the EBCM electrical harness connector (2).
  9. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement.
  10. When all procedures have been completed, the automated ABS bleed procedure is required. Refer to Antilock Brake System Automated Bleed Procedure.