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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 625 (Anti-Lock Brake System) >> Repair Instructions >> Brake Pressure Modulator Valve (BPMV) Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: For safety reasons, the brake pressure modulator valve assembly must not be repaired, the complete unit must be replaced. With the exception of the EBCM, no screws on the brake pressure modulator valve assembly 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 OFF the ignition.
  2. Raise the vehicle.
  3. Remove the left front tire and wheel assembly. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  4. Remove the front air deflector. Refer to AIR DEFLECTOR REPLACEMENT -- FRONT in Body Front End.
  5. Remove the left front fascia extension. Refer to FASCIA EXTENSION REPLACEMENT -- FRONT in Bumpers.
  6. Remove the EBCM connector position assurance (2) from the EBCM electrical connector (1).
    Fig 1: Removing EBCM Connector Position Assurance From EBCM Electrical Connector
    G01582483Courtesy of GENERAL MOTORS CORP.
  7. Rotate the electronic brake control module (EBCM) connector tab up to the unlocked position.
    NOTE: To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.
  8. Disconnect the EBCM electrical connector (1) from the EBCM (4).
    WARNING: Brake fluid may irritate eyes and skin. In case of contact, take the following actions:
    • Eye contact-rinse thoroughly with water.
    • Skin contact-wash with soap and water.
    • If ingested-consult a physician immediately.
    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.
    CAUTION: Excessive bending of brake pipes during BPMV removal or installation may cause permanent damage that will require replacement.

    Important:  Record the location of all brake pipes to the brake pressure modulator valve (BPMV) for use as an aid during installation.

  9. Remove the 2 master cylinder brake pipes (1) from the BPMV (2).
    Fig 2: Removing 2 Master Cylinder Brake Pipes From BPMV
    G01582484Courtesy of GENERAL MOTORS CORP.
  10. Remove the 4 wheel brake pipes (1) from the BPMV (2).
    Fig 3: Removing 4 Wheel Brake Pipes From BPMV
    G01582485Courtesy of GENERAL MOTORS CORP.
  11. Clean any brake fluid spillage from the BPMV (1).
  12. Remove the 2 BPMV bracket nuts (2).
  13. Remove the EBCM/BPMV assembly (1) from the BPMV bracket (3).
    Fig 4: Removing EBCM/BPMV Assembly From BPMV Bracket
    G01582486Courtesy of GENERAL MOTORS CORP.
  14. Disconnect the BPMV electrical connector (2) from the EBCM (3).
    Fig 5: Disconnecting BPMV Electrical Connector From EBCM
    G01582487Courtesy of GENERAL MOTORS CORP.
  15. Remove the 6 EBCM to BPMV screws (2).
    Fig 6: Removing 6 EBCM To BPMV Screws
    G01582488Courtesy of GENERAL MOTORS CORP.
  16. Clean the surface of the EBCM/BPMV assembly.

    Important:  The EBCM cannot be repaired. If faulty, the unit must be replaced.

  17. Separate the EBCM (2) from the BPMV (1).
    Fig 7: Separating EBCM From BPMV
    G01582489Courtesy of GENERAL MOTORS CORP.
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