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Home >> Cadillac >> 2007 >> STS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 161 (Antilock Brake System, Traction Control System & Stability Control System) >> Repair Instructions >> Brake Pressure Modulator Valve Replacement (CTS-V) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Cadillac CTS. 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. Remove the right front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  3. Remove the front air deflector. Refer to Front Air Deflector Replacement .
  4. Remove the right front wheel house liner. Refer to Front Wheelhouse Liner Replacement .
    5. IMPORTANT: The area around the electronic brake control module (EBCM) must be free from loose dirt to prevent contamination of disassembled ABS components.
  5. Thoroughly clean all contaminants from around the EBCM.
  6. Remove the upper radiator support bracket. Refer to Radiator Support Bracket Replacement (LP1, LY7) or Radiator Support Bracket Replacement (LS2) .
  7. Carefully lift the right side of the radiator up and move forward to access the front brake pipe of the brake pressure modulator valve (BPMV).
  8. Carefully remove the brake pressure switch electrical connector and position out of the way.
    9. 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: Refer to Brake Fluid Effects on Paint and Electrical Components Notice .
    Fig 1: View Of BPMV & Brake Pipes
    GM772876Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Record the location of all brake pipes to the BPMV for use as an aid during installation.
  9. Remove the 2 master cylinder brake pipes (3) from the BPMV (1).
  10. Carefully remove the front wheel brake pipe from the BPMV.
  11. Carefully move the right side of the radiator froward into the insulator in the frame.
  12. Remove the remaining wheel brake pipes (2) from the BPMV (1).
  13. Clean any brake fluid spillage from the BPMV (1).
  14. If equipped with a brake fluid pressure sensor (4), disconnect the electrical connector, from the brake fluid pressure sensor.
  15. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  16. Remove the front air deflector. Refer to Front Wheelhouse Liner Replacement .
    17. Fig 2: View Of EBCM And Electrical Connector
    GM899234Courtesy of GENERAL MOTORS CORP.
  17. Rotate the EBCM connector tab (2) up to the unlocked position.
    18. NOTE: To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.
  18. Disconnect the EBCM electrical connector (1) from the EBCM (3) and position out of the way.
  19. Remove the 6 BPMV mounting bolts from under the mounting bracket.
  20. Remove the EBCM/BPMV assembly from the BPMV bracket.
  21. Remove the 4 EBCM to BPMV screws.
    22. Fig 3: View Of EBCM & BPMV
    GM772017Courtesy of GENERAL MOTORS CORP.
  22. Clean the surface of the EBCM/BPMV assembly.
  23. Remove the EBCM (1) from the BPMV (2).
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