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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 257 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Air Conditioning Refrigerant Heat Exchanger Replacement (LSY) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. 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 Sealing Washer (2) - Install NEW - Air Conditioning System Seal Replacement 

  3. Air Conditioning Refrigerant Heat Exchanger (1) @ Air Conditioning Condenser - Install
  4. GM5314143Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Evaporative Connector Hose/Tube and Compressor Hose (1) @ Air Conditioning Condenser - Install - Air Conditioning Evaporative Connector Hose/Tube and Compressor Hose Replacement (LSY) 

  5. GM5314114Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Air Conditioning Evaporator Tube Clip Bracket Bolt (4) - Install and tighten to 9 N.m (80 lb in)

  6. Air Conditioning Evaporative Connector Hose/Tube and Compressor Hose (2) @ Air Conditioning Refrigerant Heat Exchanger - Install - Air Conditioning Evaporative Connector Hose/Tube and Compressor Hose Replacement (LSY) 
  7. GM5313478Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning System Sealing Washer (2) - Install NEW [2x]

  8. Air Conditioning Refrigerant Heat Exchanger (1) @ Air Conditioning Evaporator Thermal Expansion Valve - Install
  9. GM5314071Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Evaporator Thermal Expansion Valve Hose Nut (1) @ Air Conditioning Evaporator Thermal Expansion Valve - Install and tighten to 22 N.m (16 lb ft)

  10. Intake Manifold Cover - Install - Intake Manifold Cover Replacement
  11. GM5311685Courtesy of GENERAL MOTORS COMPANY

    Front End Sheet Metal Cross Brace - Left Side (3) - Install - Front End Sheet Metal Cross Brace Replacement (Impact Bar Bracket) , or Front End Sheet Metal Cross Brace Replacement (Plenum without Blackwing)

  12. GM5314028Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Refrigerant Heat Exchanger (2) - Install

  13. Air Conditioning Evaporator Hose Clip Nut (1) - Install and tighten [2x] 9 N.m (80 lb in)
  14. GM5321124Courtesy of GENERAL MOTORS COMPANY

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

  15. Fasten the engine harness (1) onto the air conditioning refrigerant heat exchanger bracket.
  16. Recharge the refrigerant. Refrigerant Recovery and Recharging 
  17. Inspect for refrigerant leaks.
  18. Clear the DTCs.