GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2009 🢒 G6 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Brake Pressure Modulator Valve Replacement

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.

Caution: Always connect or disconnect the wiring harness connector from the EBCM/EBTCM with the ignition switch in the OFF position. Failure to observe this precaution could result in damage to the EBCM/EBTCM.

Removal Procedure

    Object Number: 1961215 Size: SH
  1. Turn the ignition switch to the OFF position.
  2. Clean the brake pressure modulator valve (BPMV) pipe fitting areas of any accumulated dirt and foreign material.
  3. Disconnect the electrical connector from the electronic brake control module (EBCM).
  4. Place a shop towel under the BPMV to catch any brake fluid loss.
  5. Disconnect the RF brake pipe fitting (1).

    6. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.


    Object Number: 1961220 Size: SH
  6. Disconnect the LR brake pipe fitting (1).

    7. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.


    Object Number: 1961223 Size: SH
  7. Disconnect the RR brake pipe fitting (1).

    8. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.


    Object Number: 1961224 Size: SH
  8. Disconnect the LF brake pipe fitting (1).

    9. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.


    Object Number: 1961228 Size: SH
  9. Disconnect the master cylinder primary brake pipe fitting (1).

    10. Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid loss and contamination.


    Object Number: 1961231 Size: SH
  10. Disconnect the master cylinder secondary brake pipe fitting (1).

    11. Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid loss and contamination.


    Object Number: 1961235 Size: SH
  11. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  12. Remove the left front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.
  13. Remove the 3 BPMV bracket nuts (1).
  14. Remove the BPMV and bracket assembly.

    15. Object Number: 1961238 Size: SH
  15. Remove the BPMV bolt (1).

    16. Object Number: 1961262 Size: SH
  16. Remove the BPMV from the bracket (1).
  17. Inspect the BPMV bracket insulator for damage and replace, if necessary.
  18. If installing a new BPMV, remove the EBCM. Refer to Electronic Brake Control Module Replacement.

Installation Procedure

Note: When installing a new BPMV, do NOT remove the shipping plugs from the pipe ports until after installation into the vehicle.

  1. Install the EBCM, if removed. Refer to Electronic Brake Control Module Replacement.

    2. Object Number: 1961262 Size: SH
  2. Install the BPMV to the bracket (1).

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


    Object Number: 1961238 Size: SH
  3. Install the BPMV bolt (1).

    4. Tighten
    Tighten the bolt to 10 N·m (89 lb in).


    Object Number: 1961235 Size: SH
  4. Install the BPMV and bracket assembly.
  5. Install the 3 BPMV bracket nuts (1).

    6. Tighten
    Tighten the nuts to 10 N·m (89 lb in).

  6. Install the left front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.

    7. Object Number: 1961231 Size: SH
  7. Connect the master cylinder secondary brake pipe fitting (1).

    8. Tighten
    Tighten the fitting to 20 N·m (15 lb ft).


    Object Number: 1961228 Size: SH
  8. Connect the master cylinder primary brake pipe fitting (1).

    9. Tighten
    Tighten the fitting to 20 N·m (15 lb ft).


    Object Number: 1961224 Size: SH
  9. Connect the LF brake pipe fitting (1).

    10. Tighten
    Tighten the fitting to 20 N·m (15 lb ft).


    Object Number: 1961223 Size: SH
  10. Connect the RR brake pipe fitting (1).

    11. Tighten
    Tighten the fitting to 20 N·m (15 lb ft).


    Object Number: 1961220 Size: SH
  11. Connect the LR brake pipe fitting (1).

    12. Tighten
    Tighten the fitting to 20 N·m (15 lb ft).


    Object Number: 1961215 Size: SH
  12. Connect the RF brake pipe fitting (1).

    13. Tighten
    Tighten the fitting to 20 N·m (15 lb ft).

    Note: Ensure the electrical connector is correctly inserted into the EBCM prior to placing the locking lever into position. Failure to make a proper connection may cause communication problems with the module.

  13. Connect the EBCM electrical connector.
  14. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding.

    15. Note: Place the ignition switch in the ON position. Do not start the engine.

  15. Perform the Diagnostic System Check - Vehicle.
  16. Observe the feel of the brake pedal after performing the diagnostic system check. If the pedal now feels spongy, air may have been in the secondary circuit of the brake modulator assembly, which may have been introduced into the primary circuit. If the pedal feels spongy, perform the Antilock Brake System Automated Bleed Procedure.