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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 166 (Engine Mechanical - 2.7L (L3B) - Repair Instructions (3 Of 3)) >> Repair Instructions >> Compressor Air Intake Turbocharger Replacement >> Installation Procedure

Installation Procedure

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  1. GM5918235
    CAUTION:

    Refer to Fastener Caution .

    Turbocharger Stud (1) - Install NEW and tighten [2x] - Fastener Specifications

  2. GM5004022
    WARNING:

    When removing, handling or installing this component wear protective gloves. The sharp edges on the component may be very sharp and may cause injury.

    Turbocharger Oil Return Pipe Gasket (5) - Install NEW

  3. Turbocharger Oil Feed Pipe Gasket (4) - Install NEW
  4. Turbocharger Oil Return Pipe Gasket (3) - Install NEW
  5. Turbocharger Oil Feed Pipe (2) @ Compressor Air Intake Turbocharger - Install
  6. Turbocharger Oil Feed Pipe Bolt (1) @ Compressor Air Intake Turbocharger - Install and tighten [2x] - Fastener Specifications
  7. GM5146550

    Turbocharger Gasket (2) - Install NEW

  8. Turbocharger Assembly (1) - Install
  9. GM5146546

    Turbocharger Nut (1) - Install NEW and hand tighten [2x]

  10. Turbocharger Bolt (2) - Install NEW and hand tighten [2x]
  11. Tighten the 2 turbocharger nuts (1) and the 2 turbocharger bolts (2) in sequence. Fastener Specifications
  12. GM5146481

    Turbocharger Oil Feed Pipe Bolt (4) - Install and tighten [4x] - Fastener Specifications

  13. Turbocharger Brace (3) - Install
  14. Turbocharger Bracket Bolt (2) - Install and tighten [2x] - Fastener Specifications
  15. Turbocharger Brace Nut (1) - Install and tighten - Fastener Specifications
  16. GM5156836

    Positive Crankcase Ventilation Tube (1) - Install NEW

  17. GM5517316

    Reposition the front axle vent hose (3), and electrical harness (4).

  18. Electrical Connector (2) - Connect [2x]
  19. Retainer (1) - Connect [3x]
  20. GM5395366

    Turbocharger Coolant Feed and Return Pipe Gasket (2) - Install NEW

  21. Turbocharger Coolant Feed and Return Pipe (1) - Install
  22. GM5395358

    Turbocharger Coolant Feed and Return Pipe Bolt (1) - Install [2x] - Fastener Specifications

  23. GM5395343

    Turbocharger Coolant Feed Hose (2) @ Turbocharger Coolant Feed and Return Pipe - Install

  24. Hose Clamp (1) - Engage - Hose Clamp Replacement Guidelines - Spring Type
  25. GM5395335

    Turbocharger Coolant Feed and Return Pipe (2) @ Exhaust Manifold Outlet Pipe - Install

  26. Hose Clamp (1) - Engage - Hose Clamp Replacement Guidelines - Spring Type
  27. GM5395337

    Compressor Air Intake Turbocharger Wastegate Actuator Rod (3) @ Turbocharger Wastegate Actuator - Connect

  28. Compressor Air Intake Turbocharger Wastegate Actuator Link Clip (2) - Install
  29. Compressor Air Intake Turbocharger Wastegate Actuator Link Spring (1) - Install
  30. GM5403768

    Catalytic Converter Gasket (3) - Install NEW

  31. Exhaust Pipe Clamp (2) - Install NEW but do NOT tighten.
  32. NOTE:

    Ensure that the catalytic converter gasket is fully seated on the warm up three-way catalytic converter inlet flange.

  33. Warm Up Three-Way Catalytic Converter (1) - Install
  34. GM5442538

    Catalytic Converter Brace (3) - Install

  35. CAUTION:

    Refer to Fastener Caution .

  36. Catalytic Converter Brace Bolt (2) - Install and tighten [2x] - Fastener Specifications
  37. Catalytic Converter Brace Bracket Nut (1) - Install and tighten [2x] - Fastener Specifications
  38. GM5403738
    NOTE:

    Inspect on all sides of the warm up three-way catalytic converter to verify it is fully seated prior to tightening the exhaust pipe clamp.

    Exhaust Pipe Clamp (1) - Tighten - Fastener Specifications

  39. GM5399464

    Front Crossmember Brace (2) - Install

  40. Front Crossmember Brace Nut (1) - Install and tighten [4x] - Fastener Specifications
  41. GM5394598

    Catalytic Converter Gasket (2) - Install NEW

  42. Exhaust Muffler (1) - Install
  43. GM5309211

    Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Right Side (3) - Install

  44. Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Right Side (2) - Install
  45. GM5309202

    Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Left Side (3) - Install

  46. Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Left Side (2) - Install
  47. GM5394596

    Electrical Connector (1) @ Exhaust Control Valve Actuator - Connect [2x]

  48. GM5309188

    Catalytic Converter Nut (1) - Install and tighten [2x] - Fastener Specifications

  49. GM5400756

    Floor Panel Reinforcement (2) - Install

  50. Floor Panel Number 4 Cross Bar Reinforcement Bolt (1) - Install and tighten [6x] - Fastener Specifications
  51. GM5399124
    NOTE:

    A special anti-seize compound is used on the heated oxygen sensor threads. The compound consists of liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will have the compound already applied to the threads. IF a sensor is removed and is to be reinstalled, the threads MUST have an anti-seize compound applied before installation. Adhesives, Fluids, Lubricants, and Sealers

    Using the appropriate tool, install the heated oxygen sensor (1). Fastener Specifications

  52. Connect the electrical connector.
  53. CAUTION:

    Phenolic spacer must be present to prevent galvanic/corrosive reaction and/or excessive temperature conduction between engine mount bracket and engine mount. Replace mount if phenolic spacer is missing or damaged. Failure to ensure phenolic spacer is intact and not damaged can lead to premature failure of engine mount and/or engine mount bracket.

  54. Ensure the phenolic spacer remains in place.
  55. Use the EN-51007  Global Engine Support Fixture to lower the right side of the engine onto the engine mount.
  56. GM5495033

    Engine Mount Bracket (1) - Install

  57. GM5491651

    Engine Mount Bracket Bolt (1) - Install NEW and tighten [4x] - Fastener Specifications

  58. Use the EN-51007  Global Engine Support Fixture to lower the engine onto the engine mount.
  59. GM5491648

    Engine Mount Nut (1) - Install NEW and tighten - Fastener Specifications

  60. GM5407967

    Water Pump Cover (2) - Install

  61. Water Pump Cover Bolt (1) - Install and tighten [3x] - Fastener Specifications
  62. GM5494001

    Retainer (1) - Install

  63. GM5399142

    Charge Air Cooler Inlet Air Tube (2) @ Turbocharger (3) - Install

  64. Retainer Spring (1) - Engage
  65. GM5395459

    Turbocharger Heat Shield (1) - Install

  66. GM5395458

    Turbocharger Heat Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications

  67. GM5395457

    Turbocharger Heat Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications

  68. GM5399121
    NOTE:

    A special anti-seize compound is used on the heated oxygen sensor threads. The compound consists of liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will have the compound already applied to the threads. IF a sensor is removed and is to be reinstalled, the threads MUST have an anti-seize compound applied before installation. Adhesives, Fluids, Lubricants, and Sealers

    Using the EN-6179  Heated Oxygen Sensor Remover/Installer, install the heated oxygen sensor (1). Fastener Specifications

  69. Connect the electrical connector.
  70. GM5399073

    Air Cleaner Assembly (1) - Install

  71. GM5399053

    Air Cleaner Bolt (1) - Install and tighten - Fastener Specifications

  72. Connect the electrical connector and install all wiring harnesses to the air cleaner assembly.
  73. GM5398967

    Air Cleaner Outlet Duct (1) - Install

  74. Electrical Connector @ Evaporative Emission Canister Purge Solenoid Valve - Connect
  75. GM5398955

    Positive Crankcase Ventilation Tube (3) - Connect - Plastic Collar Quick Connect Fitting Service

  76. Evaporative Emission Canister Purge Tube (2) - Connect - Plastic Collar Quick Connect Fitting Service
  77. Air Cleaner Outlet Duct Clamp (1) - Tighten [2x] - Fastener Specifications
  78. GM5432174

    Intake Manifold Cover (1) @ Upper Intake Manifold Bracket (2) - Install

  79. GM5432171

    Push down on the front of the intake manifold cover (2).

  80. Intake Manifold Cover Bolt (1) - Install and tighten [2x] - Fastener Specifications
  81. Install the oil fill cap.
  82. Connect the battery. Battery Negative Cable Disconnection and Connection
  83. Fill the engine oil to the proper level with NEW engine oil. Engine Oil and Oil Filter Replacement (RWD)
  84. Perform the turbocharger wastegate learn. Turbocharger Wastegate Learn
  85. Inspect the exhaust system for leaks.