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Home >> Buick >> 2018 >> LaCrosse Base >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Control System >> Repair Instructions >> Generator Control Module 3-Phase Cable Assembly Replacement >> Removal Procedure

Removal Procedure

    WARNING:

    Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.

    The High Voltage Disabling procedure includes the following steps:

    • Identify how to disable high voltage.
    • Identify how to test for the presence of high voltage.
    • Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.

    Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:

    • Safety glasses with appropriate side shields when within 15 meters (50 feet) of the vehicle, either indoors or outdoors.
    • Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
      • Visually and functionally inspect the gloves before use.
      • Wear the Insulation gloves with leather protectors at all times when working with the high voltage battery assembly, whether the system is energized or not.

    Failure to follow the procedures may result in serious injury or death.

  1. Disable the high voltage system. High Voltage Disabling
  2. Raise and support the vehicle.
  3. GM4745243

    Generator Control Module Cable Cover Bolt (1) @ Starter Generator (3) - Remove [2x]

  4. Generator Control Module Cable Cover Bolt (2) - Remove
  5. GM4745244

    Generator Control Module 3-Phase Cable Cover (1) - Remove

  6. Terminal Insulator (2) - Remove
  7. GM4745245

    Generator Control Module 3-Phase Cable Bolt (1) - Remove [3x]

  8. Generator Control Module 3-Phase Cable Cover Seal (2) - Inspect and replace as necessary.
  9. GM4745246

    Generator Control Module Cable Housing Bolt (1) - Remove [2x]

  10. Generator Control Module 3-Phase Cable (2) - Remove
  11. GM4745763

    Retainer Clip (1) @ Heater Coolant Pump Hose (2) - Disengage

  12. Retainer (4) @ Automatic Transmission Range Selector Actuator Bracket (3) - Disengage
  13. Lower the vehicle.
  14. GM4747900

    Drive Motor Power Inverter Module Shield (2) - Remove - Drive Motor Power Inverter Module Shield Replacement 

  15. GM4745814

    Retainer (2) - Disengage [2x]

  16. High Voltage Electrical Connector (1) - Disconnect
  17. GM4745889

    Generator Control Module 3-Phase Cable (1) - Remove