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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Hybrid/EV Energy Storage System) >> Repair Instructions >> Drive Motor Generator Battery Cable Replacement >> Removal Procedure

Removal Procedure

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    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. Ignition OFF, disable the high voltage at the A4 hybrid battery pack. Refer to High Voltage Disabling .
  2. Remove the fuel tank. Refer to Fuel Tank Replacement .
  3. Remove the left front underbody air deflector. Refer to Underbody Front Air Deflector Replacement - Left Side .
  4. Remove the left front frame reinforcement. Refer to Drivetrain and Front Suspension Frame Replacement .
    5. Fig 1: 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 battery.
    7. Fig 2: Drive Motor Generator Cable
    GM2539372Courtesy of GENERAL MOTORS COMPANY
  7. Remove the drive motor generator battery bracket nuts (1) and the cable retainer nut (2).
  8. Pull the drive motor generator cable (3) through the grommet opening.
    9. Fig 3: Drive Motor Generator Retainer Nut
    GM2539371Courtesy of GENERAL MOTORS COMPANY
  9. Remove the drive motor generator retainer nut (1) and bolt (2).
    10. NOTE:

    Replace the fasteners (3) if re-using the drive motor generator battery cable.

  10. Detach the drive motor generator battery cable fasteners (3).
    11. Fig 4: Drive Motor Generator Battery Fastener Bolts
    GM2539370Courtesy of GENERAL MOTORS COMPANY
  11. Remove the drive motor generator battery fastener bolts (1).
    12. Fig 5: Drive Motor Generator Battery Cable Retainer Nut
    GM2539369Courtesy of GENERAL MOTORS COMPANY
  12. Within the rear engine compartment, remove the drive motor generator battery cable retainer nut (1).
    13. Fig 6: Drive Motor Generator Battery Cable Retainers
    GM2572897Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Replace the retainers (1) if re-using the drive motor generator battery cable.

  13. Disconnect the drive motor generator battery cable retainers (1) and the battery tray cable clip (2).
    14. Fig 7: Drive Motor Generator Battery Cable Terminal
    GM2539366Courtesy of GENERAL MOTORS COMPANY
  14. Remove the drive motor generator battery cable terminal (1) , from the underhood fuse block.
    15. Fig 8: Generator Starter Cover Nuts
    GM2531315Courtesy of GENERAL MOTORS COMPANY
  15. Remove the generator starter cover nuts (1) and remove the cover (2).
    16. Fig 9: Starter Generator
    GM2531312Courtesy of GENERAL MOTORS COMPANY
  16. Remove the bolts (1) and detach the drive motor generator battery cable from the generator starter.
    17. Fig 10: Drive Motor Generator Battery Cable
    GM2572879Courtesy of GENERAL MOTORS COMPANY
  17. Detach the retainers (1) holding the drive motor generator battery cable to the fuel pump cover and the heater outlet bracket.
    18. NOTE:

    Replace the retainers (1) if re-using the drive motor generator battery cable.

  18. Remove the drive motor generator battery cable from the vehicle.
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