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Removal Procedure

WARNING: This page is about a different car, the 2015 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.
    WARNING:

    Ensure all High Voltage safety procedures are followed. Failure to follow the procedure exactly as written may result in serious injury or death.

    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. Remove both rear compartment floor panels. Refer to Rear Compartment Floor Panel Trim Replacement (With Battery Cover, HP6)Rear Compartment Floor Panel Trim Replacement (With Blower Cover, HP6) .
  2. Remove the drive motor battery cooling blower outlet duct. Refer to Drive Motor Battery Cooling Blower Outlet Duct Replacement .
    3. Fig 1: Drive Motor Battery Cooling Blower Outlet Duct Fastener
    GM2571127Courtesy of GENERAL MOTORS COMPANY
  3. Remove the upper fasteners (1) on the generator control module cooling air outlet duct.
    4. Fig 2: Generator Control Module Cooling Air Outlet Duct And Tighten Fasteners
    GM2601904Courtesy of GENERAL MOTORS COMPANY
  4. Remove the lower fasteners (1) holding the generator control module and remove the cooling air outlet duct.
    5. Fig 3: Drive Motor Battery Cooling Blower Assembly
    GM2750282Courtesy of GENERAL MOTORS COMPANY
  5. Disconnect and unclip the drive motor battery cooling blower electrical harness.
  6. Remove the drive motor battery cooling blower and bracket fasteners (1).
  7. Remove the drive motor battery cooling blower and bracket (2) as an assembly.
  8. If the hybrid battery has not been disabled in a previous step, disable the hybrid battery. Refer to high voltage disabling for servicing any internal components within the A4 Hybrid/EV Battery Pack. High Voltage Disabling .
    9. Fig 4: Body Harness Connectors
    GM2571124Courtesy of GENERAL MOTORS COMPANY
  9. Remove the body harness connectors (1) from the generator control and battery module.
    10. Fig 5: High Voltage 3-phase Cable
    GM2571363Courtesy of GENERAL MOTORS COMPANY
  10. Remove the high voltage 3-phase cable terminal nuts (1) and the 12V terminal branch nut (4).
  11. Remove the high voltage cable (2) and the 12V cable (3) from the generator control and battery module.
    12. Fig 6: Battery Cooling Air Inlet Duct
    GM2571125Courtesy of GENERAL MOTORS COMPANY
  12. Detach the drive motor battery cooling air inlet upper duct retainers (1).
    13. Fig 7: Generator Control Module Cover Fasteners
    GM2571557Courtesy of GENERAL MOTORS COMPANY
  13. Remove the generator control module cover fasteners (1).
  14. Remove the generator control module cover fastener (2) and remove the generator control module cover (3).
  15. If servicing components internal to the A4 Hybrid/EV Battery Pack, continue with the high voltage disabling procedure. Refer to high voltage disabling for servicing any internal components within the A4 Hybrid/EV Battery Pack. High Voltage Disabling .
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