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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Heating, Ventilation, And Air Conditioning - Repair Instructions) >> Repair Instructions >> Air Conditioning Refrigerant Heat Exchanger Replacement (LSY, L3B) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the air conditioning refrigerant heat exchanger in to the engine compartment.
  2. GM5314157Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Condenser Hose Seal (2) - Install NEW

  3. Air Conditioning Refrigerant Heat Exchanger (1) @ Air Conditioning Condenser - Install
  4. GM5536431Courtesy of GENERAL MOTORS COMPANY

    Retainer (1) @ Engine Control Module Bracket - Install

  5. GM5314143Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor and Condenser Hose Seal (2) - Install NEW

  6. Air Conditioning Evaporative Connector Hose/Tube and Compressor Hose (1) @ Air Conditioning Condenser - Install
  7. GM5315482Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Air Conditioning Condenser Tube Clip (2) - Install

  8. Air Conditioning Condenser Hose Nut (1) @ Air Conditioning Condenser - Install and tighten - Fastener Specifications
  9. GM5314114Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Evaporator Tube Clip Bracket Bolt (4) - Install and tighten - Fastener Specifications

  10. Air Conditioning Compressor Hose Seal (3) - Install NEW
  11. Air Conditioning Evaporative Connector Hose/Tube and Compressor Hose (2) @ Air Conditioning Refrigerant Heat Exchanger - Install
  12. Air Conditioning Compressor Hose Nut (1) - Install and tighten - Fastener Specifications
  13. GM5537606Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Air Conditioning Evaporator Inlet Tube Seal (3) - Install NEW

  14. Air Conditioning Evaporator Outlet Tube Seal (2) - Install NEW
  15. Air Conditioning Refrigerant Heat Exchanger (1) @ Air Conditioning Evaporator Thermal Expansion Valve - Install
  16. GM5314071Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Air Conditioning Evaporator Thermal Expansion Valve Hose Nut (1) @ Air Conditioning Evaporator Thermal Expansion Valve - Install and tighten - Fastener Specifications

  17. GM5314028Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Refrigerant Heat Exchanger (2) - Install

  18. Air Conditioning Evaporator Hose Clip Nut (1) - Install and tighten [2x] - Fastener Specifications
  19. GM5321124Courtesy of GENERAL MOTORS COMPANY

    Fasten the auxiliary generator battery jumper cable (2) onto the lower air conditioning refrigerant heat exchanger bracket stud.

  20. Fasten the engine harness (1) onto the air conditioning refrigerant heat exchanger bracket.
  21. Recharge the refrigerant. Refrigerant Recovery and Recharging 
  22. Inspect for refrigerant leaks.