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Home >> Cadillac >> 2016 >> ELR >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Repair Instructions >> Electronic Brake Control Module 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:

Always connect or disconnect the wiring harness connector from the EBCM/EBTCM with the ignition switch in the OFF position. Failure to observe this precaution could result in damage to the EBCM/EBTCM.

    NOTE:

    The transmission must be in the PARK position, the power button in the OFF position, and the brakes not applied to ensure the brake modulator and high pressure accumulator (HPA) pressure relief occurs. This process will take approximately 1 to 3 minutes.

  1. Place the transmission in PARK.
  2. Place the power button in the OFF position.
  3. Remove the remote keyless entry (RKE) transmitter and close all of the vehicle doors.
  4. Wait approximately 3 minutes for the HPA pressure relief to occur.
  5. Remove the front suspension strut housing brace. Refer to Front Suspension Strut Housing Brace Replacement .
  6. Without disconnecting the connectors, remove the fasteners and position the drive motor generator power inverter module aside. Refer to Drive Motor Power Inverter Module Replacement .
    7. Fig 1: Electronic Brake Control Module
    GM3604517Courtesy of GENERAL MOTORS COMPANY
  7. Remove the bolt (1) and position aside the engine wiring harness junction block.
  8. Disconnect the electronic brake control module (EBCM) electrical connector.
  9. Remove and properly dispose of the brake fluid in the master cylinder reservoir.
    10. Fig 2: Master Cylinder Reservoir Return Hose Quick Connects
    GM3598619Courtesy of GENERAL MOTORS COMPANY
  10. Release the master cylinder reservoir return hose quick connects (1).
  11. Remove the master cylinder reservoir return hose.
  12. Cap the master cylinder reservoir return hose outlet port on the brake pressure modulator valve (BPMV) to prevent brake fluid loss and contamination.
    13. Fig 3: Master Cylinder Reservoir Feed Hose Quick Connects
    GM3598620Courtesy of GENERAL MOTORS COMPANY
  13. Release the master cylinder reservoir feed hose quick connects (1).
  14. Remove the master cylinder reservoir feed hose.
  15. Cap the master cylinder reservoir feed hose inlet port on the BPMV to prevent brake fluid loss and contamination.
    16. Fig 4: Right Rear Brake Pipe Fitting
    GM3598621Courtesy of GENERAL MOTORS COMPANY
  16. Disconnect the right rear brake pipe fitting (1) from the BPMV.
  17. Cap the brake pipe fitting and the BPMV outlet port to prevent brake fluid loss and contamination.
    18. Fig 5: Left Rear Brake Pipe Fitting
    GM3598622Courtesy of GENERAL MOTORS COMPANY
  18. Disconnect the left rear brake pipe fitting (1) from the BPMV.
  19. Cap the brake pipe fitting and the BPMV outlet port to prevent brake fluid loss and contamination.
    20. Fig 6: Left Front Secondary Brake Pipe Fitting
    GM3598623Courtesy of GENERAL MOTORS COMPANY
  20. Disconnect the left front secondary brake pipe fitting (1) from the BPMV.
  21. Cap the brake pipe fitting and the BPMV outlet port to prevent brake fluid loss and contamination.
    22. Fig 7: Master Cylinder Right Front Secondary Brake Pipe Fitting
    GM3600471Courtesy of GENERAL MOTORS COMPANY
  22. Disconnect the master cylinder right front secondary brake pipe fitting (1) from the BPMV.
  23. Cap the brake pipe fitting and the BPMV outlet port to prevent brake fluid loss and contamination.
    24. Fig 8: Master Cylinder Primary Brake Pipe Fitting
    GM3600472Courtesy of GENERAL MOTORS COMPANY
  24. Disconnect the master cylinder primary brake pipe fitting (1) from the BPMV.
  25. Cap the brake pipe fitting and the BPMV outlet port to prevent brake fluid loss and contamination.
  26. Remove the brake master cylinder. Refer to Master Cylinder Replacement .
    27. Fig 9: BPMV Bracket Bolt
    GM3598624Courtesy of GENERAL MOTORS COMPANY
  27. Remove the BPMV bracket bolts (1).
    28. Fig 10: BPMV Bracket Nut
    GM3598625Courtesy of GENERAL MOTORS COMPANY
  28. Remove the BPMV bracket nut (1).
  29. Carefully move the front brake pipes and remove the BPMV and bracket assembly.
    30. Fig 11: EBCM Bolts
    GM3607031Courtesy of GENERAL MOTORS COMPANY
  30. Remove the 4 EBCM bolts (1).
    31. Fig 12: EBCM And BPMV
    GM3607034Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do not pry the EBCM from the BPMV. The EBCM must be pulled back evenly.

  31. Carefully separate the EBCM (1) and seal (2) from the BPMV. Do not pry or force the components apart.
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