LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2012 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Hybrid/EV Energy Storage System) >> Repair Instructions >> Generator Control and Battery Module Replacement and Shipping Preparation >> Removal Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    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 will perform the following tasks:

    • 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 exactly as written may result in serious injury or death.

  1. Remove the rear compartment floor panel. Refer to Rear Compartment Floor Panel Trim Replacement (with Battery Cover, HP6) , Rear Compartment Floor Panel Trim Replacement (with Blower Cover, HP6) .
  2. Ignition OFF, disable high voltage at the A4 hybrid battery pack. Refer to High Voltage Disabling .
  3. Remove the rear end trim finish panel. Refer to Rear End Trim Finish Panel Replacement .
    4. Fig 1: Body Harness Connectors
    GM2571124Courtesy of GENERAL MOTORS COMPANY
  4. Remove the body harness connectors (1) from the generator control and battery module.
    5. Fig 2: High Voltage 3-phase Cable
    GM2571363Courtesy of GENERAL MOTORS COMPANY
  5. Remove the high voltage 3-phase cable terminal nuts (1) and the 12V terminal branch nut (4).
  6. Remove the high voltage cable (2) and the 12V cable (3) from the generator control and battery module.
    7. Fig 3: Drive Motor Battery Cooling Blower Outlet Duct Fastener
    GM2571127Courtesy of GENERAL MOTORS COMPANY
  7. Remove the drive motor battery generator intermediate cooling duct fasteners (1).
    8. Fig 4: Intermediate Duct Retainers
    GM2571126Courtesy of GENERAL MOTORS COMPANY
  8. Detach the intermediate duct retainers (1) from the generator control and battery module.
    9. Fig 5: Battery Cooling Air Inlet Duct
    GM2571125Courtesy of GENERAL MOTORS COMPANY
  9. Detach the drive motor battery cooling air inlet lower duct retainers (1), by pulling outwards and then upwards. Refer to Drive Motor Battery Cooling Air Inlet Upper Duct Replacement .
    10. Fig 6: Generator Control And Battery Module Vent Tube
    GM2571123Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do not bend the vent tube.

  10. Remove the generator control and battery module vent tube (1).
    11. Fig 7: Generator Control And Battery Module Mounting Bolts
    GM2571118Courtesy of GENERAL MOTORS COMPANY
  11. Remove the generator control and battery module mounting bolts (1).
    12. Fig 8: Protective Cloth Over Trunk-To-Rear Bumper Area
    GM2571114Courtesy of GENERAL MOTORS COMPANY
  12. Place a protective cloth over the trunk-to-rear bumper area.
    13. NOTE:

    Do not insert fingers into vent area of the generator control and battery module while rotating.

  13. With assistance, use gloves to slide the generator control and battery module (1) into the trunk area.
    14. Fig 9: Battery Pack Lifting Adapter Center Eye Bolt
    GM2533069Courtesy of GENERAL MOTORS COMPANY
  14. Using the EL-48264  Battery Pack Lifting Adapter center the eye bolt (2) on the generator control and battery module and insert the hooks (1) into the generator control and battery module holes.
  15. Attach a portable lift to the center eye bolt (2) of the battery pack lifting adapter.
    16. Fig 10: Generator Control And Battery Module
    GM2533065Courtesy of GENERAL MOTORS COMPANY
  16. Remove the generator control and battery module (2) from the rear trunk area.
scientia non olet · About LEMON Manuals