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Home >> Cadillac >> 2016 >> XTS Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Repair Instructions >> Brake Pressure Modulator Valve Replacement >> Removal Procedure
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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 battery tray. Refer to Battery Tray Replacement .
  3. Without draining the coolant and without disconnecting the hoses, remove and position aside the radiator surge tank. Refer to Radiator Surge Tank Replacement (LFX, LF3) .
  4. Disconnect the brake fluid level sensor electrical connector.
  5. Thoroughly clean the electronic brake control module (EBCM) to brake pressure modulator valve (BPMV) area of any accumulated dirt and debris.
  6. Disconnect the EBCM electrical connector.
    7. Fig 1: Master Cylinder Brake Pipe Fittings
    GM2739893Courtesy of GENERAL MOTORS COMPANY
  7. Disconnect the master cylinder secondary brake pipe fitting (1).
  8. Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid loss and contamination.
  9. Disconnect the master cylinder primary brake pipe fitting (2).
  10. Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid loss and contamination.
    11. Fig 2: Right Rear & Left Front Brake Pipe Fittings
    GM2739896Courtesy of GENERAL MOTORS COMPANY
  11. Disconnect the right rear brake pipe fitting (1).
  12. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.
  13. Disconnect the left front brake pipe fitting (2).
  14. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.
    15. Fig 3: Right Front & Left Rear Brake Pipe Fittings
    GM2739899Courtesy of GENERAL MOTORS COMPANY
  15. Disconnect the right front brake pipe fitting (1).
  16. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.
  17. Disconnect the left rear brake pipe fitting (2).
  18. Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid loss and contamination.
    19. Fig 4: BPMV Assembly Bracket Nuts
    GM2739902Courtesy of GENERAL MOTORS COMPANY
  19. Remove the BPMV assembly bracket nuts (1).
  20. Remove the BPMV assembly.
    21. Fig 5: BPMV Assembly Bracket Bolts
    GM2739969Courtesy of GENERAL MOTORS COMPANY
  21. Remove the BPMV assembly bracket bolt (1).
  22. Carefully separate the BPMV assembly from the bracket.
  23. Remove the EBCM. Refer to Electronic Brake Control Module Replacement .
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