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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 High Voltage System. Refer to High Voltage Disabling
  2. Drain Drive Motor Generator Power Inverter Module Cooling System. Refer to Drive Motor Generator Power Inverter Module Cooling System Draining and Filling
  3. Fig 1: DC Power Control Module High Voltage Connector Protector, Nut And Bolts
    GM4529630Courtesy of GENERAL MOTORS COMPANY
  4. Remove the battery to battery positive cable retainers.
  5. Remove Accessory DC Power Control Module High Voltage Connector Protector Nut (2)
  6. Remove Accessory DC Power Control Module High Voltage Connector Protector Bolts (3, 4)
  7. Remove Accessory DC Power Control Module High Voltage Connector Protector (5)
  8. Fig 2: First Stage Connector Tab And Connector Retaining Tabs
    GM3794634Courtesy of GENERAL MOTORS COMPANY
  9. Disconnect the high voltage connectors in the following sequence:
    • Release the CPA. Push down on the connector tab, and release the connector.
  10. Fig 3: Auxiliary Power Module Connector
    GM4529631Courtesy of GENERAL MOTORS COMPANY
  11. After releasing the 2-stage safety connectors, remove the auxiliary power module connector (1).
  12. Fig 4: Low Voltage Connection Connector
    GM4529655Courtesy of GENERAL MOTORS COMPANY
  13. Disconnect Low Voltage Connection Connector (1) @ Accessory DC Power Control Module
  14. Fig 5: Drive Motor Generator Control Module Cooling Outlet Hose, Electric Differential Drive Motor Power Inverter Module Cooling Hose And Clamps
    GM4529656Courtesy of GENERAL MOTORS COMPANY
  15. Release Clamp (1) and Remove the Drive Motor Generator Control Module Cooling Outlet Hose (2)
  16. Release Clamp (1) and Remove the Electric Differential Drive Motor Power Inverter Module Cooling Hose (3)
  17. Fig 6: Battery Negative Cable Extension Cable And Battery Positive Cable Components
    GM4545651Courtesy of GENERAL MOTORS COMPANY
  18. Remove Battery Negative Cable Extension Cable Fastener (1)
  19. Remove Battery Positive Cable Protector (3)
  20. Remove Battery Positive Cable and Nut (2)
  21. Remove Battery Negative Cable Extension Cable & Battery Positive Cable - Remove
  22. Fig 7: Accessory DC Power Control Module Bolts And Studs
    GM4529658Courtesy of GENERAL MOTORS COMPANY
  23. Remove Accessory DC Power Control Module Bolts (1) (Qty: 2)
  24. Remove Accessory DC Power Control Module Stud (2)
  25. Fig 8: Engine Wiring Harness Brackets
    GM4529659Courtesy of GENERAL MOTORS COMPANY
  26. Position aside Engine Wiring Harness Brackets (1) (Qty: 2)
  27. Fig 9: Accessory DC Power Control Module
    GM4529660Courtesy of GENERAL MOTORS COMPANY
  28. Remove Accessory DC Power Control Module (1)