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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. High Voltage Disabling
  2. Drain the drive motor generator power inverter module cooling system. Drive Motor Generator Power Inverter Module Cooling System Draining and Filling
  3. Battery Tray - Remove - Battery Tray Replacement
  4. Radiator Surge Tank - Remove - Radiator Surge Tank Replacement
  5. Accessory DC Power Control Module - Remove - Accessory DC Power Control Module Replacement
  6. GM4529627Courtesy of GENERAL MOTORS COMPANY

    { If Equipped } Using a flat bladed screwdriver (1), pry the edge of the connector handle lock (2) from the holding tab.

  7. { If Equipped } Release the connector handle lock by rotating the connector handle forward.
  8. { If Equipped } With the connector handle in the release position, disconnect the high voltage charger connector from the high power distribution module.
  9. GM3794634Courtesy of GENERAL MOTORS COMPANY

    Disconnect the high voltage connectors in the following sequence:

    • Release the CPA. Push down on the connector tab, and release the connector.
  10. GM4529628Courtesy of GENERAL MOTORS COMPANY

    Low Voltage Electrical Connector (1) @ High Voltage Battery Control Wiring Junction Block - Disconnect

  11. After releasing the 2-stage safety connectors, remove the A/C control module electrical connector (5) and the drive motor battery charger & auxiliary power module connector (4) @ High Voltage Battery Control Wiring Junction Block
  12. Remove the RESS heater electrical connector (3) and the drive motor battery charger & auxiliary power module to RESS electrical connector (2) @ High Voltage Battery Control Wiring Junction Block
  13. GM4529662Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Bracket Bolt (1) - Remove

  14. Engine Wiring Harness Bracket (2) - Remove
  15. GM4529661Courtesy of GENERAL MOTORS COMPANY

    Drive Motor Battery Charger Electrical Connector (1) (3) - Disconnect

  16. Signal & AC Electrical Connector (2) - Disconnect
  17. GM4529663Courtesy of GENERAL MOTORS COMPANY

    Drive Motor Power Inverter Module Cooling Inlet Hose (2) - Release Clamp (1) and Remove the Hose

  18. Electric Differential Drive Motor Power Inverter Module Cooling Hose (3) - Release Clamp (1) and Remove the Hose
  19. GM4529664Courtesy of GENERAL MOTORS COMPANY

    Drive Motor Battery Charger Bolt (1, 2) - Remove [ 3x ]

  20. Drive Motor Battery Charger Nut (3) - Remove
  21. GM4529665Courtesy of GENERAL MOTORS COMPANY

    Drive Motor Battery Charger (1) - Remove