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Home >> Cadillac >> 2017 >> CTS Base, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Repair Instructions >> Brake Pressure Modulator Valve Replacement >> Removal Procedure

Removal Procedure

WARNING:

Refer to Brake Fluid Irritant Warning .

CAUTION:

Refer to Brake Fluid Effects on Paint and Electrical Components Caution .

CAUTION:

To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.

  1. Turn the ignition OFF.
  2. Remove the plenum front panel. Refer to Plenum Front Panel Replacement .
  3. Thoroughly clean the electronic brake control module (EBCM) to brake pressure modulator valve (BPMV) area of any accumulated dirt and debris.
  4. Disconnect the EBCM electrical connector.
    5. Fig 1: Brake Pipe Fittings
    GM2809410Courtesy of GENERAL MOTORS COMPANY
  5. Disconnect the left front brake pipe fitting (1).
  6. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.
  7. Disconnect the right rear brake pipe fitting (2).
  8. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.
    9. Fig 2: Brake Pipe Fitting
    GM2809415Courtesy of GENERAL MOTORS COMPANY
  9. Disconnect the left rear brake pipe fitting (1).
  10. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.
  11. Disconnect the right front brake pipe fitting (2).
  12. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.
    13. Fig 3: Secondary Brake Pipe Fitting And Primary Brake Pipe Fitting
    GM2809423Courtesy of GENERAL MOTORS COMPANY
  13. Disconnect the brake pressure modulator valve secondary brake pipe fitting (1).
  14. Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid loss and contamination.
  15. Disconnect the brake pressure modulator valve primary brake pipe fitting (2).
  16. Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid loss and contamination.
    17. Fig 4: BPMV Bracket Nuts
    GM2809426Courtesy of GENERAL MOTORS COMPANY
  17. Remove the BPMV bracket nuts (1).
  18. Remove the BPMV assembly.
    19. Fig 5: BPMV Bracket Bolt
    GM2809430Courtesy of GENERAL MOTORS COMPANY
  19. Remove the BPMV bracket bolt (1).
  20. Carefully separate the BPMV assembly from the bracket.
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