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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Electrical >> Body Electrical >> Hybrid/EV System Energy Storage >> Repair Instructions >> Battery Energy Control Module Replacement >> Removal Procedure
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Removal Procedure

  1. Disable the high voltage system. Refer to High Voltage Disabling 
  2. High Voltage Battery (1)» Remove - High Voltage Battery Replacement and Shipping Preparation 
    Fig 1: High Voltage Battery
    GM4455270Courtesy of GENERAL MOTORS COMPANY
  3. High Voltage Top Cover (4)» Remove - High Voltage Battery Cover Replacement (Top Cover) High Voltage Battery Cover Replacement (Front Cover) High Voltage Battery Cover Replacement (Left Side) High Voltage Battery Cover Replacement (Right Side) 
    Fig 2: High Voltage Battery Cover Nuts And Bolts
    GM4491136Courtesy of GENERAL MOTORS COMPANY
  4. Release the retaining tabs. (1)
    Fig 3: Retaining Tabs
    GM4492091Courtesy of GENERAL MOTORS COMPANY
  5. Disconnect the electrical connectors in the sequence shown.
    CAUTION:

    The battery energy control modules internal cell balancing circuitry is powered by the cell group voltage sense circuits. In order to prevent an unrecoverable, unbalanced Hybrid/EV battery section or internal control module damage, always take the following actions:

    1. Disconnect ALL of the battery energy control module connectors prior to disconnecting any Hybrid/EV battery section connector.
    2. Reconnect all the Hybrid/EV battery section connectors prior to reconnecting the battery energy control module connectors.
    3. Disconnect and reconnect the battery energy control module connectors ONLY in the sequence provided in Repair Instructions.
    Fig 4: Battery Energy Control Module And Electrical Connectors
    GM4512062Courtesy of GENERAL MOTORS COMPANY
  6. Battery Energy Control Module (1)» Remove