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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 >> Removal Procedure

Removal 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.
WARNING:

In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

WARNING:

Avoid contact with HOT components. Wear safety glasses and protective gloves to avoid personal injury.

  1. Disconnect the battery. Battery Negative Cable Disconnection and Connection
  2. Remove the oil fill cap.
  3. GM5432171

    Intake Manifold Cover Bolt (1) - Remove [2x]

  4. Lift up on the front of the intake manifold cover (2).
  5. GM5432174

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

  6. GM5398955

    Air Cleaner Outlet Duct Clamp (1) - Loosen [2x]

  7. Evaporative Emission Canister Purge Tube (2) - Disconnect - Plastic Collar Quick Connect Fitting Service
  8. Positive Crankcase Ventilation Tube (3) - Disconnect - Plastic Collar Quick Connect Fitting Service
  9. Electrical Connector @ Evaporative Emission Canister Purge Solenoid Valve - Disconnect
  10. GM5398967

    Air Cleaner Outlet Duct (1) - Remove

  11. Disconnect the electrical connector and remove all wiring harnesses from the air cleaner assembly.
  12. GM5399053

    Air Cleaner Bolt (1) - Remove

  13. GM5399073

    Air Cleaner Assembly (1) - Remove

  14. GM5399121
    CAUTION:

    The use of excessive force may damage the threads in the exhaust manifold/pipe.

    NOTE:

    The heated oxygen sensor MAY be difficult to remove when the engine temperature is less than 48°C (120°F).

    NOTE:

    The heated oxygen sensor in-line connector and louvered end MUST be kept clear of all grease, dirt, and other contaminants. Do NOT use cleaning solvents of any type. Do NOT drop or roughly handle the sensor.

    Disconnect and reposition electrical connectors as necessary.

  15. Using the EN-6179  Heated Oxygen Sensor Remover/Installer, remove the heated oxygen sensor (1).
  16. GM5395457

    Turbocharger Heat Shield Bolt (1) - Remove [2x]

  17. GM5395458

    Turbocharger Heat Shield Bolt (1) - Remove [2x]

  18. GM5395459

    Turbocharger Heat Shield (1) - Remove

  19. GM5399142

    Retainer Spring (1) - Release

  20. Charge Air Cooler Inlet Air Tube (2) @ Turbocharger (3) - Remove
  21. GM5494001

    Retainer (1) - Unclip

  22. GM5407967

    Water Pump Cover Bolt (1) - Remove [3x]

  23. Water Pump Cover (2) - Remove
  24. Install the engine support fixture. Engine Support Fixture
  25. GM5491648

    Engine Mount Nut (1) - Remove

  26. Use the EN-51007  Global Engine Support Fixture to raise the engine off the engine mount.
  27. GM5491651

    Engine Mount Bracket Bolt (1) - Remove and DISCARD [4x]

  28. GM5495033

    Engine Mount Bracket (1) - Remove

  29. 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.

  30. Ensure the phenolic spacer remains in place.
  31. Raise and support the vehicle. Lifting and Jacking the Vehicle
    GM5399124
  32. Disconnect and reposition electrical connectors as necessary.
  33. NOTE:

    The heated oxygen sensor MAY be difficult to remove when the engine temperature is less than 48°C (120°F).

    NOTE:

    The heated oxygen sensor in-line connector and louvered end MUST be kept clear of all grease, dirt, and other contaminants. Do NOT use cleaning solvents of any type. Do NOT drop or roughly handle the sensor.

  34. Using the appropriate tool, remove the heated oxygen sensor (1).
  35. GM5400756

    Floor Panel Number 4 Cross Bar Reinforcement Bolt (1) - Remove [6x]

  36. Floor Panel Reinforcement (2) - Remove
  37. GM5309188

    Catalytic Converter Nut (1) - Remove [2x]

  38. GM5394596

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

  39. GM5309202

    Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Left Side (2) - Separate

  40. Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Left Side (3) - Separate
  41. GM5309211

    Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Right Side (2) - Separate

  42. Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Right Side (3) - Separate
  43. GM5394598

    Exhaust Muffler (1) - Remove

  44. Catalytic Converter Gasket (2) - Remove and DISCARD
  45. GM5399464

    Front Crossmember Brace Nut (1) - Remove [4x]

  46. Front Crossmember Brace (2) - Remove
  47. GM5403738

    Exhaust Pipe Clamp (1) - Loosen

  48. GM5442538

    Catalytic Converter Brace Bracket Nut (1) - Remove [2x]

  49. Catalytic Converter Brace Bolt (2) - Remove [2x]
  50. Catalytic Converter Brace (3) - Remove
  51. GM5403768

    Warm Up Three-Way Catalytic Converter (1) - Remove

  52. Exhaust Pipe Clamp (2) - Remove and DISCARD
  53. Catalytic Converter Gasket (3) - Remove and DISCARD
  54. GM5395337

    Compressor Air Intake Turbocharger Wastegate Actuator Link Spring (1) - Remove

  55. Compressor Air Intake Turbocharger Wastegate Actuator Link Clip (2) - Remove
  56. Compressor Air Intake Turbocharger Wastegate Actuator Rod (3) @ Turbocharger Wastegate Actuator - Disconnect
  57. GM5395335

    Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type

  58. Turbocharger Coolant Feed and Return Pipe (2) @ Exhaust Manifold Outlet Pipe - Remove
  59. GM5395343

    Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type

  60. Turbocharger Coolant Feed Hose (2) @ Turbocharger Coolant Feed and Return Pipe - Remove
  61. GM5395358

    Turbocharger Coolant Feed and Return Pipe Bolt (1) - Remove [2x]

  62. GM5395366

    Turbocharger Coolant Feed and Return Pipe (1) - Remove

  63. Turbocharger Coolant Feed and Return Pipe Gasket (2) - Remove and DISCARD
  64. GM5517316

    Retainer (1) - Disconnect [3x]

  65. Electrical Connector (2) - Disconnect [2x]
  66. Reposition the front axle vent hose (3), and electrical harness (4).
  67. GM5156836
    CAUTION:

    The Positive Crankcase Ventilation (PCV) line is tamper resistant and must always be replaced once it is removed. The fittings connected to the PCV line must also be replaced if they are damaged when the PCV line is removed. To reduce the risk of damage to the fittings, use a suitable cutting tool and carefully cut the connections away.

    NOTE:

    Disconnecting the tamper resistant connections will damage the positive crankcase ventilation tube, it must be replaced after removal.

    Use a suitable tool to disconnect the 6 locking tabs at each temper resistant connection.

  68. Positive Crankcase Ventilation Tube (1) - Remove and DISCARD
  69. GM5146481

    Turbocharger Brace Nut (1) - Remove

  70. Turbocharger Bracket Bolt (2) - Remove [2x]
  71. Turbocharger Brace (3) - Remove
  72. Turbocharger Oil Feed Pipe Bolt (4) - Remove [4x]
  73. GM5146546

    Turbocharger Nut (1) - Remove and DISCARD [2x]

  74. Turbocharger Bolt (2) - Remove and DISCARD [2x]
  75. GM5146550

    Turbocharger Assembly (1) - Remove

  76. 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.

  77. Turbocharger Gasket (2) - Remove and DISCARD
  78. GM5004022

    Turbocharger Oil Feed Pipe Bolt (1) @ Compressor Air Intake Turbocharger - Remove [2x]

  79. Turbocharger Oil Feed Pipe (2) - Remove
  80. Turbocharger Oil Return Pipe Gasket (3) - Remove and DISCARD
  81. Turbocharger Oil Feed Pipe Gasket (4) - Remove and DISCARD
  82. Turbocharger Oil Return Pipe Gasket (5) - Remove and DISCARD
  83. GM5918235

    Turbocharger Stud (1) - Remove and DISCARD [2x]