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Home › Cadillac › 2004 › Seville › Repair and Diagnosis › Brakes › Antilock Brake System, Traction Control System & Stability Control System › Repair Instructions › Brake Pressure Modulator Valve (BPMV) Replacement › Removal Procedure

Removal Procedure

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.
    Fig 1: Removing/Installing Electronic Brake Control Module
    GM458835Courtesy of GENERAL MOTORS CORP.
  1. Turn OFF the ignition.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the left front wheel. Refer to Tire and Wheel Removal and Installation in Tire and Wheels.
  4. Remove the left front fascia extension. Refer to Fascia Extension Replacement - Front in Bumpers.
  5. Remove the front air deflector. Refer to Air Deflector Replacement - Front in Body Front End.
    6. IMPORTANT: The area around the electronic brake control module (EBCM)/brake pressure modulator valve (BPMV ) must be free from loose dirt to prevent contamination of disassembled ABS components.
  6. Thoroughly wash all contaminants from around the EBCM/BPMV.
  7. Rotate the EBCM connector tab up to the unlocked position.
  8. Disconnect the EBCM connector position assurance (2) from the EBCM electrical connector (1).
    9. NOTE: To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.
  9. Disconnect the EBCM electrical connector (1) from the EBCM (4).
    10. CAUTION: 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.
    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.
    NOTE: Excessive bending of brake pipes during BPMV removal or installation may cause permanent damage that will require replacement.
    Fig 2: Brake Pressure Modulator Valve (BPMV)
    GM458848Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Record the location of all brake pipes to the BPMV for use as an aid during installation.
  10. Remove the 2 master cylinder brake pipes (1) from the BPMV (2).
    11. Fig 3: Identifying BPMV & Brake Pipes
    GM458850Courtesy of GENERAL MOTORS CORP.
  11. Remove the 4 wheel brake pipes (1) from the BPMV (2).
    12. Fig 4: View Of EBCM/BPMV Assembly
    GM458866Courtesy of GENERAL MOTORS CORP.
  12. Clean any brake fluid spillage from the BPMV (1).
  13. Remove the 2 BPMV bracket nuts (2).
  14. Remove the EBCM/BPMV assembly (1) from the BPMV bracket (3).
    15. Fig 5: Identifying EBCM Electrical Connector
    GM458842Courtesy of GENERAL MOTORS CORP.
  15. Disconnect the BPMV electrical connector (2) from the EBCM (3).
    16. Fig 6: Disassembling/Reassembling Electronic Brake Control Module
    GM458840Courtesy of GENERAL MOTORS CORP.
  16. Remove the 6 EBCM to BPMV screws (2).
    17. Fig 7: View Of Both halves Of EBCM
    GM458834Courtesy of GENERAL MOTORS CORP.
  17. Clean the surface of the EBCM/BPMV assembly.
  18. Remove the EBCM (2) from the BPMV (1).
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