LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Control System >> Repair Instructions >> Accessory DC Power Control Module Replacement >> Installation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation Procedure

  1. GM4488996Courtesy of GENERAL MOTORS COMPANY

    Accessory DC Power Control Module (2) - Position

  2. Electrical Connector (1) - Connect
  3. GM5086384Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Shown out of vehicle for graphic clarity.

    Accessory DC Power Control Module High Voltage Connector Protector (1) - Install

  4. GM4488995Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution

    Accessory DC Power Control Module (2) - Install

  5. Accessory DC Power Control Module Bolt (1) - Install and tighten [2x] 22 N.m (16 lb ft)
  6. GM4488988Courtesy of GENERAL MOTORS COMPANY

    Ground Cable (1) - Install

  7. Ground Cable Nut (3) - Install and tighten 12 N.m (106 lb in)
  8. Protective Cap (2) - Install
  9. GM4487166Courtesy of GENERAL MOTORS COMPANY

    Generator Cable (4) - Install

  10. Generator Cable Fastener (2) - Install and tighten 12 N.m (106 lb in)
  11. Protective Cap (3) - Install
  12. Retainer (1) - Engage
  13. GM4488992Courtesy of GENERAL MOTORS COMPANY

    Accessory DC Power Control Module Bolt (1) - Install and tighten 22 N.m (16 lb ft)

  14. GM4522884Courtesy of GENERAL MOTORS COMPANY

    Accessory DC Power Control Module Bracket (3) - Install - Accessory DC Power Control Module Bracket Replacement 

  15. GM4488993Courtesy of GENERAL MOTORS COMPANY

    Accessory DC Power Control Module Bolt (1) - Install and tighten [2x] 22 N.m (16 lb ft)

  16. GM4488984Courtesy of GENERAL MOTORS COMPANY

    Accessory DC Power Control Module High Voltage Connector Protector Bolt (1) - Install and tighten 9 N.m (80 lb in)

  17. GM4488987Courtesy of GENERAL MOTORS COMPANY

    Accessory DC Power Control Module High Voltage Connector Protector (2) - Install

  18. Accessory DC Power Control Module High Voltage Connector Protector Bolt (1) - Install and tighten [2x] 9 N.m (80 lb in)
  19. GM4488981Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Connect

  20. Retainer (2) - Engage [2x]
  21. GM4487918Courtesy of GENERAL MOTORS COMPANY

    Generator Control Module Coolant Radiator Hose (2) - Install - Generator Control Module Coolant Radiator Hose Replacement

  22. GM4489007Courtesy of GENERAL MOTORS COMPANY

    Drive Motor Generator Control Module Radiator Outlet Hose (2) - Install

  23. GM4244690Courtesy of GENERAL MOTORS COMPANY

    Radiator Inlet Hose (2) - Install - Radiator Inlet Hose Replacement (LTG without HP9)Radiator Inlet Hose Replacement (LGW)Radiator Inlet Hose Replacement (LGX)Radiator Inlet Hose Replacement (LTG with HP9)

  24. GM4248724Courtesy of GENERAL MOTORS COMPANY

    Front Wheelhouse Panel Brace - Front (2) - Install - Front Wheelhouse Panel Brace Replacement (Rear)Front Wheelhouse Panel Brace Replacement (Front)

  25. Enable the high voltage system. High Voltage Enabling
  26. Reprogram the accessory DC power control module, refer to Control Module References