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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. Refer to High Voltage Disabling .
  2. Remove the high voltage disconnect circuit cover. Refer to High Voltage Disconnect Circuit Connector Cover Replacement .
  3. Remove the high voltage battery disconnect control module. Refer to High Voltage Battery Disconnect Control Module Module Replacement (with quick charge) , High Voltage Battery Disconnect Control Module Module Replacement (without quick charge) .
  4. Fig 1: Fastener And 300 Volt High Voltage Connector
    GM3232206Courtesy of GENERAL MOTORS COMPANY
  5. Loosen the fastener (1) and disconnect 300 volt high voltage connector (2), from the drive motor generator power inverter module (3).
  6. Remove and discard the 300 volt high voltage seal.
  7. Fig 2: Fastener And 300 Volt High Voltage Connector
    GM3232263Courtesy of GENERAL MOTORS COMPANY
  8. Loosen the fastener (1) and disconnect the 300 volt high voltage connector (2), from the drive motor generator power inverter module (3).
  9. Remove and discard the 300 volt high voltage seal.
  10. Fig 3: Fastener And Transmission 3 Phase Connector
    GM3232258Courtesy of GENERAL MOTORS COMPANY
  11. Loosen the fastener (1) and disconnect the transmission 3 phase connector (2), from the drive motor generator power inverter module.
  12. Remove and discard the transmission 3 phase connector seal.
  13. Fig 4: Engine Wiring Harness Connector Handles
    GM3232260Courtesy of GENERAL MOTORS COMPANY
  14. Release the engine wiring harness connector handles (3) and disconnect the engine wiring harness connectors (2), from the drive motor generator power inverter module.
  15. Disconnect the transmission fluid pump cable connector (1), from the drive motor generator power inverter module.
  16. Remove the electric differential drive motor power inverter module cooling hose. Refer to Electric Differential Drive Motor Power Inverter Module Cooling Hose Replacement (PE TPIM to LTR) .
  17. Remove the generator control module coolant hose. Refer to Generator Control Module Coolant Hose Replacement (PE From APM TO TPIM) .
  18. Fig 5: Fastener And Engine Wiring Harness Terminal
    GM3232256Courtesy of GENERAL MOTORS COMPANY
  19. Remove the fastener (1) and the engine wiring harness terminal (2), from the drive motor generator power inverter module case ground.
  20. Remove the fastener (4) and the battery negative cable terminal (3), from the case ground.
  21. Fig 6: Drive Motor Generator Power Inverter Module Fasteners
    GM3232253Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Note the position and location of the brackets.

  22. Remove the drive motor generator power inverter module fasteners (1) and the engine wiring harness brackets (2).
  23. Fig 7: Drive Motor Generator Power Inverter Module
    GM3232252Courtesy of GENERAL MOTORS COMPANY
  24. With the aid of a second technician, remove the drive motor generator power inverter module (1) from the vehicle.