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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 Compressor Replacement (LF4) >> Installation Procedure

Installation Procedure

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  1. Prior to installing the air conditioning compressor perform the air conditioning compressor oil balancing procedure. Air Conditioning Compressor Oil Balancing 
  2. GM5854959Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor (1) - Install

  3. GM5854958Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Air Conditioning Compressor Bolt (1) - Install and tighten [2x] - Fastener Specifications

  4. GM5854957Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor Hose Seal - Small (1) - Install NEW

  5. Air Conditioning Compressor Hose Seal - Large (2) - Install NEW
  6. Air Conditioning Evaporative Connector Hose/Tube and Compressor Hose (3) - Install
  7. Air Conditioning Compressor Hose Bolt (4) - Install and tighten - Fastener Specifications
  8. GM5854965Courtesy of GENERAL MOTORS COMPANY

    Wiring Harness Retainer (3) - Install [2x]

  9. Electrical Connector (4) - Connect [2x]
  10. Air Conditioning Compressor Rear Bracket (2) - Install
  11. Air Conditioning Compressor Bolt (1) - Install and tighten - Fastener Specifications
  12. GM5877068Courtesy of GENERAL MOTORS COMPANY

    Install the front cradle sheer plate (2) between the front bumper fascia center air deflector and the driveline and front suspension cradle and raise into position.

  13. Ensure that the left and right side wheelhouse liners (1) are positioned in place under the front cradle sheer plate (2).
  14. GM5877073Courtesy of GENERAL MOTORS COMPANY

    Front Wheelhouse Liner Bolt (1) - Install and tighten [2x] - Fastener Specifications

  15. GM5877036Courtesy of GENERAL MOTORS COMPANY

    Front Crossmember Brace Bolt (3) - Install and tighten [8x] - Fastener Specifications

  16. Front Cradle Shear Plate Nut (2) - Install and tighten [2x] - Fastener Specifications
  17. Front Cradle Shear Plate Bolt (1) - Install and tighten [4x] - Fastener Specifications
  18. Remove the jack.
  19. GM5862911Courtesy of GENERAL MOTORS COMPANY

    Front Bumper Fascia Air Deflector Retainer (2) - Install

  20. Front Bumper Fascia Air Deflector Bolt (1) - Install and tighten [4x] - Fastener Specifications
  21. GM5876696Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Front Compartment Air Deflector- Left Side and Right Side (1) - Install

  22. GM5876673Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Front Bumper Fascia Lower Stiffener Bolt- Left Side and Right Side (3) - Install and tighten [6x] - Fastener Specifications

  23. Front Compartment Air Deflector Retainer- Left Side and Right Side (2) - Install [2x]
  24. Front Wheelhouse Liner Bolt- Left Side and Right Side (1) - Install and tighten [4x] - Fastener Specifications
  25. Remove the support and lower the vehicle.
  26. GM5854879Courtesy of GENERAL MOTORS COMPANY

    Position the accessory drive primary belt (2) onto all but one of the idler pulleys.

  27. Use a suitable tool to rotate the drive belt tensioner (1) counterclockwise, then hold tension.
  28. Install the accessory drive primary belt (2) onto the last idler pulley. Check to ensure that the drive belt is centered on each pulley, and fully seated into ribbed pulleys.
  29. Slowly release tension from the drive belt tensioner (1).
  30. Inspect the accessory drive primary belt (2) again to ensure centered on each pulley.
  31. GM5860358Courtesy of GENERAL MOTORS COMPANY

    Auxiliary Air Cleaner Outlet Duct (1) - Install

  32. GM5860357Courtesy of GENERAL MOTORS COMPANY

    Retainer Spring (3) - Engage

  33. Charge Air Bypass Valve Hose (2) - Install
  34. Charge Air Bypass Valve Hose Clamp (1) - Tighten - Fastener Specifications
  35. GM5874986Courtesy of GENERAL MOTORS COMPANY

    Turbocharger Wastegate Actuator Vacuum Tank Solenoid Valve Tube (1) - Connect - Plastic Collar Quick Connect Fitting Service

  36. GM5846598Courtesy of GENERAL MOTORS COMPANY

    Install the NEW positive crank ventilation fresh air tube (2) and secure the 2 positive crankcase ventilation tube connectors (1).

  37. GM5862960Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Assembly (2) - Install

  38. Air Cleaner Bolt (1) - Install and tighten - Fastener Specifications
  39. Install all retainers and wiring harnesses to the air cleaner assembly as necessary.
  40. Connect the 2 mass airflow sensor electrical connectors.
  41. GM5864667Courtesy of GENERAL MOTORS COMPANY

    Auxiliary Air Cleaner Outlet Duct (4) - Install

  42. Air Cleaner Outlet Duct Clamp (3) - Tighten - Fastener Specifications
  43. Air Cleaner Outlet Duct (2) - Install
  44. Air Cleaner Outlet Duct Clamp (1) - Tighten - Fastener Specifications
  45. GM5839407Courtesy of GENERAL MOTORS COMPANY

    Front End Sheet Metal Cross Brace- Left Side and Right Side (3) - Install [2x]

  46. Front Suspension Strut Upper Mounting Nut- Left Side and Right Side (2) - Install and tighten [4x] - Fastener Specifications
  47. Front End Sheet Metal Cross Brace Bolt- Left Side and Right Side (1) - Install and tighten [6x] - Fastener Specifications
  48. Install all wiring harness retainers to the front end sheet metal cross braces.
  49. GM5864524Courtesy of GENERAL MOTORS COMPANY

    Radiator Air Upper Baffle- Upper (3) - Install

  50. Radiator Air Upper Baffle Bolt (2) - Install and tighten [2x] - Fastener Specifications
  51. Radiator Air Upper Baffle Retainer (1) - Install [5x]
  52. GM5839233Courtesy of GENERAL MOTORS COMPANY

    Transmission Control Module (1) @ Engine Control Module Bracket (2) - Install

  53. Engine Control Module Bracket (2) - Install
  54. GM5839232Courtesy of GENERAL MOTORS COMPANY

    Engine Control Module Bracket Bolt (1) - Install and tighten [3x] - Fastener Specifications

  55. GM5839234Courtesy of GENERAL MOTORS COMPANY

    Engine Control Module (1) - Install

  56. Connect the electrical connectors.
  57. GM5861123Courtesy of GENERAL MOTORS COMPANY

    Radiator Surge Tank Outlet Pipe (3) - Install

  58. Radiator Surge Tank Inlet Hose Clamp (4) @ Engine Radiator - Engage - Hose Clamp Replacement Guidelines - Spring Type
  59. Radiator Surge Tank Inlet Hose Clip (2) @ Engine Control Module Bracket - Install
  60. Radiator Surge Tank Inlet Hose Clamp (1) @ Radiator Surge Tank Inlet Hose - Engage - Hose Clamp Replacement Guidelines - Spring Type
  61. GM5839283Courtesy of GENERAL MOTORS COMPANY

    Oil Filler Cap - Remove

  62. Intake Manifold Cover (2) - Install
  63. Intake Manifold Cover Bolt (1) - Install and tighten - Fastener Specifications
  64. Oil Filler Cap - Install
  65. Fill the cooling system to the proper level. Cooling System Draining and Filling (LSY GE 47716) , or Cooling System Draining and Filling (LSY Static Fill) , or Cooling System Draining and Filling (LSY with V03 Static Fill) , or Cooling System Draining and Filling (L3B Static Fill) , or Cooling System Draining and Filling (L3B GE 47716) , or Cooling System Draining and Filling (LSY with V03 GE 47716) , or Cooling System Draining and Filling (LF4 Static Fill) , or Cooling System Draining and Filling (LF4 GE 47716)
  66. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection
  67. Start the engine and check for coolant leaks.
  68. Recharge the refrigerant. Refrigerant Recovery and Recharging