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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> Brakes >> Antilock Brake System And Traction Control System >> Repair Instructions >> Brake Pressure Modulator Valve (BPMV) Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: Identifying EBCM Harness Connector
    GM230405Courtesy of GENERAL MOTORS CORP.
  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 in Engine Controls.
  5. Disconnect the electronic brake control module (EBCM) harness connector (1).
  6. Disconnect the EBCM to brake pressure modulator valve (BPMV) connector.
    7. Fig 2: Identifying Wheel Brake Pipes To BPMV
    GM777629Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Note the locations of the brake pipes in order to aid in installation.
  7. Disconnect the 4 wheel brake pipes from the BPMV.
  8. Swing the 4 wheel brake pipes out of the way only after covering the open pipes to avoid dripping or being contaminated.
    9. Fig 3: Master Cylinder Brake Pipes To BPMV
    GM777628Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the master cylinder brake pipes from the BPMV.
  10. Loosen the brake pipes but do not remove the brake pipes from the master cylinder.
  11. Swing the 2 master cylinder brake pipes out of the way only after covering the open pipes to avoid dripping or being contaminated.
    12. Fig 4: Locating BPMV Mounting Bracket Nuts
    GM648180Courtesy of GENERAL MOTORS CORP.
  12. Remove the 2 lower BPMV mounting bracket nuts (2) from the inner wheel housing mount surface of the strut tower.
  13. Loosen the top BPMV mounting nut.
  14. 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.
    15. Fig 5: Identifying BPMV Mounting Bracket Hardware
    GM777630Courtesy of GENERAL MOTORS CORP.
    NOTE: When removing the brake pressure modulator valve, protect the vehicle exterior from possible brake fluid spillage. Brake fluid can cause damage to painted surfaces.
  15. Remove the 2 bolts (1) that connect the BPMV to the mounting bracket (2).
  16. Remove the EBCM if replacing the BPMV only. Refer to Electronic Brake Control Module Replacement .
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