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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 158 (Engine Mechanical - 2.7L (L3B) - Repair Instructions (1 Of 3)) >> Repair Instructions >> Exhaust Camshaft Replacement >> Installation Procedure

Installation 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.
  1. GM5517383

    Exhaust Camshaft (1) - Install

  2. GM5517382

    Engine Front Cover Locating Pin (4) - Install [4x]

  3. Camshaft Bearing Lower Cap (3) - Install
  4. Camshaft Bearing Lower Cap (2) - Install
    5. CAUTION:

    Refer to Fastener Caution .

    NOTE:

    Apply the following group sequence when tightening the camshaft bearing cap bolts, as applicable:

    • Tighten the 8 camshaft bearing cap bolts for the camshaft bearing lower cap at the intake camshaft first.
    • Tighten the 13 camshaft bearing cap bolts for the camshaft bearing lower cap at the exhaust camshaft.
    • Tighten the 4 camshaft bearing cap bolts for the camshaft bearing front cap last.
  5. Camshaft Bearing Cap Bolt (1) - Install and tighten [17x] - Fastener Specifications
  6. GM5517345

    EN-52462-A  Camshaft Alignment Tool (1) - Install

  7. GM5043852

    Can use Low VOC Brake Cleaner to ensure the surface areas are clean. Adhesives, Fluids, Lubricants, and Sealers

  8. EN-46109  Engine Front Cover Installation Guide Pins - Install
  9. Apply a 3 mm wide RTV bead along the edge of the cylinder head. Path is perpendicular to the crank axis. Bead is centered 2.5 mm back from front edge of head. Bead runs the entire length of sealing surface across sealing land on both sides.
  10. Install NEW - Camshaft Cover Gasket (1)
  11. GM5022866

    Install - Camshaft Cover (1)

    NOTE:

    Ensure the EN-52462-A  Camshaft Alignment Tool is installed and camshafts are in the time position.

  12. Rock the camshaft carrier back and fourth to seat the camshaft carrier cover onto the two dowels in the cylinder head sealing surface.
  13. EN-46109  Engine Front Cover Installation Guide Pins (2) - Remove
  14. GM5004087

    Camshaft Cover Bolt (3) - Install and hand tighten [5x]

  15. Camshaft Cover Stud (2) - Install and hand tighten [16x]
  16. Camshaft Cover Stud (1) - Install and hand tighten
  17. Tighten the camshaft carrier fasteners in sequence. Fastener Specifications
  18. GM5156836

    Positive Crankcase Ventilation Tube (1) - Install NEW

  19. GM5156644

    Engine Wiring Harness Bracket (2) - Install

  20. Engine Wiring Harness Bracket Nut (1) - Install and tighten [2x] - Fastener Specifications
  21. GM5156637

    Electrical Connector (2) @ Camshaft Carrier (3) - Connect [6x]

  22. Electrical Connector (1) @ Camshaft Carrier (3) - Connect [6x]
  23. GM5257435
    NOTE:

    Lubricate under the washer surface.

    Lubricate the NEW camshaft position actuator valve solenoid bolts (1) with clean engine oil where indicated. Adhesives, Fluids, Lubricants, and Sealers

  24. GM5299894

    Install the exhaust camshaft position actuator (3) and the intake camshaft position actuator (4) before installing the tool.

  25. GM5257330

    Install and hand tighten the NEW camshaft position actuator valve solenoid bolt (1).

  26. GM5256386
    NOTE:

    Ensure the camshaft carrier and cylinder head face are clean and free from RTV prior to installing the EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter.

    EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) - Install [2x]

  27. Install and tighten the two EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter bolts (3) enough to secure the EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) to the cylinder head.
  28. GM5257213

    EN-52461  Camshaft Torque Reaction Tool (1) @ EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) - Install

  29. Install and tighten the two EN-52461  Camshaft Torque Reaction Tool bolts (3).
  30. GM5274568

    EN-52436  Timing Chain Tensioner Retention Tool (1) @ Timing Chain (2) - Remove

  31. GM5257414
    CAUTION:

    Hold the camshaft position actuator firmly and squarely during camshaft position actuator valve solenoid bolt removal/installation. Failure to do so may result in damage to the inside of the camshaft position actuator.

    NOTE:

    Pressure must be applied towards the engine on the EN-52461  Camshaft Torque Reaction Tool at points (3) prior to and during any time the following two conditions are simultaneously met.

    • The camshaft position actuator valve solenoid bolt is loosened or removed.
    • The EN-52461  Camshaft Torque Reaction Tool bolts (2, 3) are loosened.

    Shift the slack in the timing chain to be taken up by the timing chain tensioner.

    1. Use a wrench to turn the EN-52461  Camshaft Torque Reaction Tool (1) counter-clockwise 6 N.m 53 lb in, then hold.
    2. Tighten the EN-52461  Camshaft Torque Reaction Tool bolt (2) to lock the intake actuator securely in place.
    3. Remove the wrench from EN-52461  Camshaft Torque Reaction Tool (1).
    4. Use a wrench to turn the EN-52461  Camshaft Torque Reaction Tool (4) counter-clockwise 6 N.m 53 lb in, then hold.
    5. Tighten the EN-52461  Camshaft Torque Reaction Tool bolt (3) to lock the exhaust actuator securely in place.
    6. Remove the wrench from EN-52461  Camshaft Torque Reaction Tool (4).
  32. GM5257299

    Tighten the NEW camshaft position actuator valve solenoid bolt (1). Fastener Specifications

  33. GM5257293

    Loosen the EN-52461  Camshaft Torque Reaction Tool bolts (2) to un-lock the actuators.

  34. Disengage the tangs of the EN-52461  Camshaft Torque Reaction Tool (1) from the intake and exhaust camshaft position actuator slots.
  35. GM5257213

    Remove the two EN-52461  Camshaft Torque Reaction Tool bolts (3).

  36. EN-52461  Camshaft Torque Reaction Tool (1) @ EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) - Remove
  37. GM5256386

    Remove the two EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter bolts (3).

  38. EN-52461-200  Camshaft Torque Reaction Tool 2.7L Adapter (2) - Remove [2x]
  39. Rotate both handles (4) of the EN-52462-A  Camshaft Alignment Tool towards the front of the engine.
  40. GM5256287

    Loosen and disengage the EN-52462-A  Camshaft Alignment Tool bolt (2) from camshaft carrier.

  41. EN-52462-A  Camshaft Alignment Tool (1) - Remove
  42. GM5002064

    Clean and apply sealant to the camshaft cover core hole plug (1) [2x]. Adhesives, Fluids, Lubricants, and Sealers

  43. Camshaft Cover Core Hole Plug (1) - Install and tighten [2x] - Fastener Specifications
  44. Camshaft Carrier Bolt (2) - Install and tighten - Fastener Specifications
  45. GM5022674
    NOTE:
    • The camshaft MUST be at the base circle position before the fuel pump is installed.
    • At the base circle position, the EN-52443  High Pressure Fuel Pump Alignment Tool will sit flush with the cylinder head.

    Install the EN-52443  High Pressure Fuel Pump Alignment Tool and turn the crankshaft until the camshaft lobe is at the base circle position.

  46. Remove the EN-52443  High Pressure Fuel Pump Alignment Tool.
  47. Lubricate the valve lifter follower (4) with clean engine oil.
  48. Valve Lifter Follower (4) - Install
  49. Fuel Pump Seal (3) - Install NEW
  50. Fuel Pump (2) - Install
    51. CAUTION:

    Alternately hand-tighten the fuel pump bolts one turn at a time until the pump is fully seated. Trying to draw down the pump without even side-to-side tightening may result in pump plunger damage.

  51. Fuel Pump Stud (1) - Install and tighten [2x] - Fastener Specifications
  52. Electrical Connector @ Fuel Pump - Connect
  53. GM5478583
    WARNING:

    The noise cancelling foam component MUST be replaced if it has been exposed to engine fluids. Failure to replace the noise cancelling foam component that has been exposed to engine fluids may result in an engine fire resulting in catastrophic engine damage, and possible injury or death.

    Fuel Pump Insulator (1) - Install

  54. GM5478561

    Fuel Injection Pump Bracket (3) - Install

  55. Fuel Pump Shield Bolt (2) - Install and tighten [2x] - Fastener Specifications
  56. Fuel Pump Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications
  57. GM5404599

    Fuel Feed Intermediate Pipe (2) - Install NEW

  58. Fuel Injection Fuel Feed Pipe Bracket Bolt (1) - Install and tighten - Fastener Specifications
  59. GM5404598

    Nut @ Fuel Feed Intermediate Pipe (1) - Install and hand tighten [2x]

  60. Nut @ Fuel Feed Intermediate Pipe (1) - Tighten [2x] - Fastener Specifications
  61. GM5022287

    Ensure the 2 engine front cover locating pins (1) are in place.

  62. Timing Belt Front Upper Cover Seal (2) - Install NEW
  63. GM5512168
    NOTE:

    Ensure that the sealing surface is clear of oil, grease and old sealant material.

    NOTE:

    Ensure proper use of room temperature vulcanizing (RTV) sealant. Use of Room Temperature Vulcanizing (RTV) and Anaerobic Sealant

    NOTE:

    The timing chain upper cover must be installed within 8 minutes of the RTV sealant application.

    Apply room temperature vulcanizing (RTV) sealant at the seam between the camshaft housing and the cylinder head where indicated.

  64. GM5022287

    Timing Chain Upper Cover (3) - Install

  65. Timing Chain Upper Cover Bolt (4) - Install and hand tighten [9x]
  66. Timing Chain Upper Cover Bolt (5) - Install and hand tighten
  67. Timing Chain Upper Cover Bolt (4, 5) - Tighten in sequence [10x] - Fastener Specifications
  68. GM5020482

    Camshaft Position Actuator Magnet Gasket (3) - Install NEW [2x]

  69. Camshaft Position Actuator Magnet (2) - Install [2x]
  70. Camshaft Position Actuator Magnet Bolt (1) - Install [4x] - Fastener Specifications
  71. GM5164169

    Remove the EN-52476  Flywheel Lock and Alignment Tool.

  72. GM5417288

    Auxiliary Generator Battery Jumper Cable (2) - Install

  73. Battery Positive Cable Nut (1) @ Starter Solenoid - Install and tighten - Fastener Specifications
  74. Electrical Connector (4) - Connect
  75. Starter (3) - Install
  76. GM5417249

    Starter Bolt (2) - Install and tighten [2x] - Fastener Specifications

  77. Starter Stud (1) - Install and tighten - Fastener Specifications
  78. GM5417233

    Auxiliary Generator Battery Jumper Cable - Install

  79. Auxiliary Generator Battery Jumper Cable Terminal Nut (1) - Install and tighten - Fastener Specifications
  80. Retainer (3) - Engage
  81. GM5396466

    Engine Oil Cooler Seal (2) - Install NEW [2x]

  82. Engine Oil Cooler (1) - Install
  83. GM5396459

    Engine Oil Cooler Bolt (1) - Install and tighten [4x] - Fastener Specifications

  84. GM5396452

    Engine Oil Cooler Coolant Inlet Hose (3) @ Engine Oil Cooler - Install

  85. Engine Oil Cooler Coolant Outlet Hose (2) @ Engine Oil Cooler - Install
  86. Hose Clamp (1) - Engage [2x] - Hose Clamp Replacement Guidelines - Spring Type
  87. GM5398967

    Air Cleaner Outlet Duct (1) - Install

  88. GM5398955

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

  89. Air Cleaner Outlet Duct Clamp (1) - Tighten [2x] -
  90. Connect the electrical connector.
  91. GM5395515

    Evaporative Emission Canister Purge Tube (1) - Install - Plastic Collar Quick Connect Fitting Service

  92. GM5512093

    Retainer (1) - Install

  93. GM5512092

    Positive Crankcase Ventilation Tube (4) - Connect - Plastic Collar Quick Connect Fitting Service

  94. Engine Wiring Harness (3) - Reposition
  95. Retainer (2) - Install [5x]
  96. Electrical Connector (1) - Connect [2x]
  97. GM5404490

    Ignition Coil (2) - Install [4x]

  98. Ignition Coil Bolt (1) - Install and tighten [8x] - Fastener Specifications
  99. GM5457786

    Upper Intake Manifold Bracket (2) - Install

  100. Upper Intake Manifold Cover Nut (1) - Install and tighten [2x] - Fastener Specifications
  101. GM5457857

    Radiator Surge Tank Inlet Hose Clip (2) @ Upper Intake Manifold Bracket (3) - Install

  102. Upper Intake Manifold Cover Nut (1) - Install and tighten [2x] - Fastener Specifications
  103. GM5159484

    Retainer (1) @ Upper Intake Manifold Bracket (2) - Install [4x]

  104. GM5457059

    Wiring Harness (2) - Reposition

  105. Electrical Connector (1) - Connect [5x]
  106. GM5129475

    Install the fuel feed pipe (1) from the fuel pump and the fuel feed pipe - underbody. Metal Collar Quick Connect Fitting Service

  107. GM5129466

    Fuel Feed Pipe Bolt (1) - Install and tighten - Fastener Specifications

  108. Fill the engine oil to the proper level with NEW engine oil. Engine Oil and Oil Filter Replacement (RWD)
  109. Fill the cooling system. Refer to Cooling System Draining and Filling (L3B Static Fill) , or Cooling System Draining and Filling (L3B GE 47716)
  110. Connect the negative battery cable. Battery Negative Cable Disconnection and Connection
    111. WARNING:

    Refer to Diesel/Gasoline Vapors Warning .

    WARNING:

    Refer to Safety Glasses Warning .

  111. Pressurize the fuel system and inspect for leaks.
  112. GM5456829
    NOTE:

    Ensure the intake manifold cover insulator retainers fully engage the intake manifold cover studs.

    Intake Manifold Cover Insulator (1) - Install

  113. GM5456746

    Intake Manifold Cover Bolt (1) - Install - Fastener Specifications

  114. GM5432174

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

  115. GM5432171

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

  116. Intake Manifold Cover Bolt (1) - Install [2x] - Fastener Specifications
  117. Install the oil fill cap.
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