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Home >> Cadillac >> 2021 >> CT4 V, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.7L (L3B) - Repair Instructions - Ct4 (6 Of 6) >> Compressor Air Intake Turbocharger Overhaul >> Installation Procedure

Installation Procedure

  1. GM5764792Courtesy of GENERAL MOTORS COMPANY

    Exhaust Pipe Clamp (1) - Install NEW

  2. GM5004022Courtesy of GENERAL MOTORS COMPANY
    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 Return 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. GM5146550Courtesy of GENERAL MOTORS COMPANY

    Turbocharger Gasket (2) - Install NEW

  8. Turbocharger Assembly (1) - Install
  9. GM5146546Courtesy of GENERAL MOTORS COMPANY

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

  10. Turbocharger Bolt (2) - Install NEW and tighten [2x] - Fastener Specifications
  11. GM5146481Courtesy of GENERAL MOTORS COMPANY

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

  12. Turbocharger Brace (3) - Install
  13. Turbocharger Bracket Bolt (2) - Install and tighten [2x] - Fastener Specifications
  14. Turbocharger Brace Nut (1) - Install and tighten - Fastener Specifications
  15. GM5156836Courtesy of GENERAL MOTORS COMPANY

    Positive Crankcase Ventilation Tube (1) - Install NEW

  16. GM5517316Courtesy of GENERAL MOTORS COMPANY

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

  17. Electrical Connector (2) - Connect [2x]
  18. Retainer (1) - Connect [3x]
  19. GM5395366Courtesy of GENERAL MOTORS COMPANY

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

  20. Turbocharger Coolant Feed and Return Pipe (1) - Install
  21. GM5395358Courtesy of GENERAL MOTORS COMPANY

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

  22. GM5395343Courtesy of GENERAL MOTORS COMPANY

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

  23. Hose Clamp (1) - Engage - Hose Clamp Replacement Guidelines - Spring Type
  24. GM5395335Courtesy of GENERAL MOTORS COMPANY

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

  25. Hose Clamp (1) - Engage - Hose Clamp Replacement Guidelines - Spring Type
  26. GM5395337Courtesy of GENERAL MOTORS COMPANY

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

  27. Compressor Air Intake Turbocharger Wastegate Actuator Link Clip (2) - Install
  28. Compressor Air Intake Turbocharger Wastegate Actuator Link Spring (1) - Install
  29. GM5403738Courtesy of GENERAL MOTORS COMPANY
    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

  30. 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.

  31. Ensure the phenolic spacer on the engine mount remains in place.
  32. GM5495033Courtesy of GENERAL MOTORS COMPANY

    Engine Mount Bracket (1) - Install

  33. GM5491651Courtesy of GENERAL MOTORS COMPANY

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

  34. Use the EN-51007  Global Engine Support Fixture to lower the engine onto the engine mount.
  35. GM5491648Courtesy of GENERAL MOTORS COMPANY

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

  36. Remove the engine support fixture. Engine Support Fixture
  37. GM5407967Courtesy of GENERAL MOTORS COMPANY

    Water Pump Cover (2) - Install

  38. Water Pump Cover Bolt (1) - Install and tighten [3x] - Fastener Specifications
  39. GM5494001Courtesy of GENERAL MOTORS COMPANY

    Retainer (1) - Install

  40. GM5399142Courtesy of GENERAL MOTORS COMPANY

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

  41. Retainer Spring (1) - Engage
  42. GM5395459Courtesy of GENERAL MOTORS COMPANY

    Turbocharger Heat Shield (1) - Install

  43. GM5395458Courtesy of GENERAL MOTORS COMPANY

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

  44. GM5395457Courtesy of GENERAL MOTORS COMPANY

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

  45. GM5399121Courtesy of GENERAL MOTORS COMPANY
    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) and tighten. Fastener Specifications

  46. Connect the electrical connector.
  47. GM5427525Courtesy of GENERAL MOTORS COMPANY

    Install the air cleaner (1) and air cleaner outlet duct (2) as an assembly.

  48. GM5427523Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct Clamp (2) - Tighten - Fastener Specifications

  49. Air Cleaner Bolt (1) - Install and tighten - Fastener Specifications
  50. GM5427515Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (4) - Connect [2x]

  51. Evaporative Emission Canister Purge Tube (3) - Connect - Plastic Collar Quick Connect Fitting Service
  52. Positive Crankcase Ventilation Tube (2) - Connect - Plastic Collar Quick Connect Fitting Service
  53. Wiring Harness Retainer (1) @ Air Cleaner Assembly - Install [4x]
  54. GM5432174Courtesy of GENERAL MOTORS COMPANY

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

  55. GM5432171Courtesy of GENERAL MOTORS COMPANY

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

  56. Intake Manifold Cover Bolt (1) - Install and tighten [2x] - Fastener Specifications
  57. Install the oil fill cap.
  58. Connect the battery. Battery Negative Cable Disconnection and Connection
  59. Fill the engine oil to the proper level with NEW engine oil. Engine Oil and Oil Filter Replacement
  60. Fill the cooling system to the proper level. Cooling System Draining and Filling (L3B Static Fill) , or Cooling System Draining and Filling (L3B GE 47716)
  61. Perform the turbocharger wastegate learn. Turbocharger Wastegate Learn
  62. Inspect the exhaust system for leaks.