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Home >> Cadillac >> 2009 >> XLR Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Repair Instructions >> Brake Pressure Modulator Valve Replacement >> Removal Procedure

Removal Procedure

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 switch to the OFF position.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  3. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (GE 47716) .
  4. Remove the intake manifold sight shield or the fuel injector sight shield. Refer to Intake Manifold Sight Shield Replacement (LC3) or Fuel Injector Sight Shield Replacement (LH2).
  5. If equipped with RPO LH2, remove the air cleaner inlet duct. Refer to Air Cleaner Inlet Duct Replacement .
  6. Disconnect the upper radiator hose. Refer to Radiator Inlet Hose Replacement .

    Position the hose aside.

  7. Disconnect the radiator surge tank inlet hose. Refer to Radiator Surge Tank Inlet Hose/Pipe Replacement .

    Position the hose aside.

  8. Remove the drive belt tensioner. Refer to Supercharger Belt Tensioner Replacement (LC3) or Drive Belt Tensioner Replacement (LH2).
  9. Clean the area surrounding the electronic brake control module (EBCM) and the brake pressure modulator valve (BPMV) of and dirt and debris.
  10. Disconnect the EBCM electrical connector.
    11. Fig 1: Identifying Rear Brake Pipe Fittings
    GM2141647Courtesy of GENERAL MOTORS CORP.
  11. Disconnect the left rear brake pipe fitting (1).

    Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid leaks and contamination.

  12. Disconnect the right rear brake pipe fitting (2).

    Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid leaks and contamination.

    13. Fig 2: Identifying Front Brake Pipe Fittings
    GM2141648Courtesy of GENERAL MOTORS CORP.
  13. Disconnect the right front brake pipe fitting (1).

    Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid leaks and contamination.

    Do not force the components apart.

  14. Disconnect the left front brake pipe fitting (2).

    Cap the brake pipe fitting and plug the BPMV outlet port to prevent brake fluid leaks and contamination.

    15. Fig 3: Identifying Master Cylinder Brake Pipe Fittings
    GM2141653Courtesy of GENERAL MOTORS CORP.
  15. Disconnect the master cylinder secondary brake pipe fitting (1).

    Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid leaks and contamination.

  16. Disconnect the master cylinder primary brake pipe fitting (2).

    Cap the brake pipe fitting and plug the BPMV inlet port to prevent brake fluid leaks and contamination.

    17. Fig 4: Identifying BPMV Nuts
    GM2141655Courtesy of GENERAL MOTORS CORP.
  17. Remove the BPMV nuts (1).
    18. Fig 5: Identifying EBCM/BPMV Module Assembly
    GM2141659Courtesy of GENERAL MOTORS CORP.
  18. Remove the EBCM/BPMV module assembly (1) from the bracket.
    19. Fig 6: Identifying BPMV Insulators
    GM2141669Courtesy of GENERAL MOTORS CORP.
  19. Remove the BPMV insulators (1).

    Inspect the insulators for damage and replace, if necessary.

    20. Fig 7: Identifying EBCM Bolts
    GM2141671Courtesy of GENERAL MOTORS CORP.
  20. Remove the EBCM bolts (1).
    21. NOTE: Do not attempt to pry or lever the EBCM from the BPMV.
    Fig 8: Identifying EBCM
    GM2141673Courtesy of GENERAL MOTORS CORP.
  21. Carefully remove the EBCM (1) from the BPMV.

    Do not force the components apart.

  22. Clean the mating surfaces of the EBCM and the BPMV with denatured alcohol and allow to dry.
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