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Home >> Cadillac >> 2009 >> XLR Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Repair Instructions >> Electronic Brake Control Module Replacement (with LH2) >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2008 Cadillac XLR. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: 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.
IMPORTANT:
  • The ignition switch must be placed in OFF mode ONLY, before disconnecting the negative battery cable during this procedure. If the ignition switch is accidentally placed into ignition ON engine OFF mode, the control modules will be activated and disconnecting the negative battery cable will cause various DTCs to be set. Refer to Keyless Entry System Description and Operation .
  • After the ignition switch is placed into OFF mode, a waiting period of 2 minutes must be observed to allow the high-speed LAN control modules to deactivate before disconnecting or connecting the negative battery cable during this procedure. If the waiting period is not observed, one or more of these control modules may still be active, this will cause various DTCs to be set.
  1. Place the ignition switch into OFF mode. Do NOT place the ignition switch into ignition ON engine OFF mode.
  2. Wait for a minimum of 2 minutes to allow the high-speed LAN control modules to deactivate.
  3. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  4. Thoroughly clean the electronic brake control module (EBCM) to brake pressure modulator valve (BPMV) area of any dirt or contaminants.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
    6. Fig 1: View Of EBCM Connector, Bracket & Bolts
    GM1274761Courtesy of GENERAL MOTORS CORP.
  6. Remove the two BPMV bracket-to-crossmember mounting bolts to improve access to the EBCM and connector.
  7. Support the ABS modulator assembly.
  8. Disconnect the electrical connector from the brake fluid pressure sensor.
    9. Fig 2: View Of EBCM And Electrical Connector
    GM899234Courtesy of GENERAL MOTORS CORP.
  9. Depress the lock tab and release the cam (2) to disconnect the electrical connector from the EBCM (3).
    10. Fig 3: View Of EBCM & BPMV
    GM772017Courtesy of GENERAL MOTORS CORP.
  10. Remove the 4 EBCM-to-BPMV retaining bolts.
  11. Separate the EBCM (1) from the BPMV (2) by carefully pulling apart.
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