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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 92 (Engine Mechanical - 2.0L (LSY) - Repair Instructions (3 Of 3)) >> Repair Instructions >> Valve Rocker Arm 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.
  1. Relieve the fuel system pressure. Fuel Pressure Relief
  2. Remove the oil fill cap.
    3. NOTE:

    Leave the oil filter in place, or oil will continue to drip.

  3. Drain the engine oil. Engine Oil and Oil Filter Replacement (RWD) , or Engine Oil and Oil Filter Replacement (AWD) 
  4. Drain the cooling system. 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 (LSY with V03 GE 47716)
  5. Disconnect the battery. Battery Negative Cable Disconnection and Connection
  6. GM5335087

    Lift up on the front of the intake manifold cover (1).

  7. GM5335089

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

  8. GM5137012

    Electrical Connector (1) - Disconnect [3x]

  9. Retainer (2) @ Upper Intake Manifold Bracket (3) - Unclip [3x]
    10. NOTE:

    Ensure any other retainers are disconnected.

  10. Wiring Harness (4) - Reposition
  11. GM5137013

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

  12. GM5137016

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

  13. Upper Intake Manifold Bracket (2) - Remove
  14. GM5431234

    Disconnect the (2) evaporative emission canister purge tube quick disconnects (1). Plastic Collar Quick Connect Fitting Service

  15. Disconnect the evaporative emission canister purge tube (2) from the retainer (3).
  16. GM5439477

    Disconnect the electrical connector at the evaporative emission canister purge pump (1).

  17. Evaporative Emission Pipe (1) @ Evaporative Emission Canister Purge Pump (2) - Disconnect - Plastic Collar Quick Connect Fitting Service
  18. Evaporative Emission Front Pipe (1) - Reposition away
  19. GM5299671

    Evaporative Emission Canister Purge Pump Bolt (1) - Remove [3x]

  20. Evaporative Emission Canister Purge Pump (2) - Remove
  21. GM5420763

    Radiator Surge Tank Inlet Hose Clamp (1) @ Radiator Surge Tank Outlet Pipe (3) - Disengage [2x] - Hose Clamp Replacement Guidelines - Spring Type

  22. Radiator Surge Tank Inlet Hose (2) @ Radiator Surge Tank Outlet Pipe (3) - Remove [2x]
  23. GM5312607

    Radiator Surge Tank Inlet Hose Clip (1) @ Positive Crankcase Ventilation Hose - Remove

  24. Radiator Surge Tank Inlet Hose Clip (3) @ Fuel Pump Cover - Remove
  25. Radiator Surge Tank Inlet Hose Clip (2) @ Engine Wiring Harness - Remove
  26. GM5312610

    Radiator Surge Tank Inlet Hose Clip (1) @ Radiator Surge Tank Inlet Pipe Bracket - Remove

  27. Radiator Surge Tank Inlet Hose Clip (2) @ Radiator Surge Tank Inlet Pipe Bracket - Remove
  28. Radiator Surge Tank Outlet Pipe (3) - Remove
  29. GM5422918

    Reposition wiring harness as necessary.

  30. Fuel Pump Shield Bolt (1) - Remove [3x]
  31. Fuel Pump Cover (2) - Remove
  32. GM5403825

    Fuel Feed Pipe (1) @ Fuel Pump - Disconnect - Metal Collar Quick Connect Fitting Service

  33. GM4967233

    Disconnect the fuel pump electrical connector.

    34. 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.

  34. Fuel Pump Insulator (1) - Remove
  35. GM5314508

    Reposition wiring harness as necessary.

  36. Fuel Injection Fuel Feed Pipe Bolt (1) - Remove
  37. Fuel Feed Intermediate Pipe (2) - Remove and DISCARD
  38. GM4967228
    CAUTION:

    Alternately loosen the fuel pump bolts one turn at a time until the pump is fully disengaged from fuel pump lifter follower. Trying to remove the pump bolts without even side-to-side loosening may result in pump plunger damage

    Fuel Pump Bolt (4) - Remove [2x]

  39. Fuel Pump (1) - Remove
  40. Fuel Pump Seal (3) - Remove and DISCARD
  41. Valve Lifter Follower (2) - Remove
  42. GM5334198

    Positive Crankcase Ventilation Tube (1) - Disconnect [2x] - Plastic Collar Quick Connect Fitting Service

  43. Retainer (2) - Unclip
  44. GM5427515

    Wiring Harness Retainer (1) @ Air Cleaner Assembly - Remove [4x]

  45. Electrical Connector (4) - Disconnect [2x]
  46. GM5427523

    Air Cleaner Bolt (1) - Remove

  47. Air Cleaner Outlet Duct Clamp (2) - Loosen
  48. GM5427525

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

  49. GM5135894

    Disconnect the electrical connector.

  50. Positive Crankcase Ventilation Hose Connector Bolt (1) - Remove [2x]
  51. Retainer (2) - Unclip
  52. Positive Crankcase Ventilation Hose (3) - Remove
  53. Positive Crankcase Ventilation Hose Fitting Seal (4) - Remove and DISCARD [2x]
  54. GM5300179

    Ignition Coil Bolt (1) - Remove [8x]

  55. Electrical Connector - Disconnect [2x]
  56. Ignition Coil (2) - Remove [4x]
  57. GM5285267

    Electrical Connector @ Camshaft Carrier - Disconnect [11x]

  58. Retainer (1) @ Camshaft Carrier - Disconnect [3x]
  59. Engine Wiring Harness (2) - Reposition
  60. GM5335764

    Oil Level Indicator (1) - Remove

  61. GM5136547
  62. Electrical Connector (1) @ Oil Level Indicator Tube (3) - Unclip
  63. Oil Level Indicator Tube Bracket Bolt (2) - Remove
  64. GM5068106

    Oil Level Indicator Tube (1) - Remove

  65. Oil Level Indicator Tube Seal (2) - Remove and DISCARD
  66. Raise and support the vehicle. Lifting and Jacking the Vehicle
  67. GM5460874

    Battery Negative Cable Nut (1) @ Starter Stud - Remove

  68. Engine Wiring Harness Retainer (2) - Disengage [2x]
  69. Auxiliary Generator Battery Jumper Cable (3) - Remove
  70. GM5460935

    Electrical Connector (1) - Disconnect

  71. GM5460947

    Battery Positive Cable Nut (1) @ Starter Solenoid - Remove

  72. Auxiliary Generator Battery Jumper Cable (2) - Remove
  73. GM5319715

    Starter Stud (1) - Remove

  74. Starter Bolt (2) - Remove [2x]
  75. Starter (3) - Remove
  76. Lower the vehicle.
  77. GM5002064

    Camshaft Cover Opening Plug (1) - Remove [2x]

  78. Camshaft Carrier Bolt-M6 (2) - Remove
  79. GM5285281
    NOTE:

    Rotate the engine using the crankshaft balancer until the locking pins of the EN-52462-A  Camshaft Alignment Tool (1) drop into the slots in the camshafts.

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

  80. Insert the bolt (2) of the EN-52462-A  Camshaft Alignment Tool (1) into the camshaft carrier and tighten to secure the tool to the camshaft carrier.
  81. GM5164169
    NOTE:

    The timing pin (3) is installed into the flexplate for engine timing procedures, it can be damaged if torque is applied to the flexplate with the timing pin engaged. The timing pin must be placed in the retracted position using the handle (1) and twisting to locked position. The slide part (4) to be installed to the flex plate when torque is applied to the flexplate or crankshaft balancer bolt.

    Remove the slide (4) from the EN-52476  Flywheel Lock and Alignment Tool (2) from the automatic transmission flexplate and install the timing pin (3) by releasing the handle (1).

  82. GM5002071

    Lock the EN-52462-A  Camshaft Alignment Tool (1) by rotating the levers in direction of arrow.

  83. GM5562846

    Disconnect the 2 electrical connectors from the camshaft position actuator solenoids.

  84. Retainer (1) @ Timing Chain Upper Cover (2) - Unclip [6x]
  85. Engine Wiring Harness (3) - Reposition
  86. GM5439440

    Camshaft Position Actuator Valve Solenoid Bolt (1) - Remove [2x]

  87. Camshaft Position Actuator Valve Solenoid (2) - Remove
  88. Camshaft Position Actuator Magnet Gasket (3) - Remove and DISCARD
  89. GM5439441

    Camshaft Position Actuator Valve Solenoid Bolt (1) - Remove [2x]

  90. Camshaft Position Actuator Valve Solenoid (2) - Remove
  91. Camshaft Position Actuator Magnet Gasket (3) - Remove and DISCARD
  92. GM4997059

    Timing Chain Upper Cover Bolt-M6 (3) - Remove

  93. Timing Chain Upper Cover Bolt-M5 (2) - Remove [11x]
  94. GM4997066

    Timing Chain Upper Cover (2) - Remove

  95. Timing Belt Front Upper Cover Seal (1) - Remove and DISCARD
  96. GM5127075

    Mark both actuator sprockets (1), timing chain, and the camshaft housing cover from the center of the bolt upward as shown with a paint marker or equivalent to help with installation.

  97. GM5002066

    Install the EN-52461  Cam Phaser Torque Reaction Tool (2) to the 2 EN-52461 - 100  Adapter Cam Phaser Torque Reaction Tool (3).

  98. Hand tighten the 2 bolts (1, 4) of EN-52461  Cam Phaser Torque Reaction Tool.
  99. GM5002065

    Install the EN-52461  Cam Phaser Torque Reaction Tool (5) along with the 2 EN-52461  Cam Phaser Torque Reaction Tool (2, 3) to the camshaft carrier.

  100. Tighten the 2 bolts (1, 4) of EN-52461 - 100  Adapter Cam Phaser Torque Reaction Tool.
  101. Tighten the 2 bolts from the EN-52461  Cam Phaser Torque Reaction Tool to the 2 EN-52461  Cam Phaser Torque Reaction Tool that were hand tightened.
  102. GM5002079

    Install the EN-52461 - 1  Holder (1) to the holes in the camshaft sprocket.

  103. Check that the EN-52461 - 1  Holder (1) sits correctly in the hole of the camshaft sprocket.
  104. Loosen the specific camshaft sprocket bolt (2) for the side that is being replaced. To take tension off the actuator that is required for the specific camshaft bolt, use steps below.
      NOTE:

      Only do the side that is being replaced.

    1. Turn the exhaust side counter clockwise to 6 N.m (53 lb in) and tighten bolt (3) just enough to hold the EN-52461 - 1  Holder in place.
    2. Turn the intake side counter clockwise to 6 N.m (53 lb in) and tighten bolt (4) just enough to hold the EN-52461 - 1  Holder in place.
  105. GM5185359

    Install the EN-52436  Timing Chain Tensioner Retention Tool (1) at the timing chain (2) down far enough to hold pressure against the tensioner to hold it in place.

  106. GM5150021

    Camshaft Sprocket Bolt (1) - Remove and DISCARD [2x]

  107. GM5002079

    Bolt (3, 4) - Loosen

  108. GM5002080
    CAUTION:

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

    Hold the intake camshaft sprocket (1) with hand from underneath the EN-52461  Cam Phaser Torque Reaction Tool (2) and pull out the EN-52461 - 1  Holder and the intake camshaft sprocket will drop down in hand so you can remove it.

  109. GM5002084

    Hold the exhaust camshaft sprocket (1) with hand from underneath the EN-52461  Cam Phaser Torque Reaction Tool (2) and pull out the EN-52461 - 1  Holder and the exhaust camshaft sprocket will drop down in hand so you can remove it.

  110. GM5431937

    Timing Chain (1) - Reposition

  111. Inspect the timing chain guides and replace if worn down to the base material.
  112. GM5152606

    Loosen the 2 bolts (1, 4) of EN-52461 - 100  Adapter Cam Phaser Torque Reaction Tool (5).

  113. Remove the EN-52461  Cam Phaser Torque Reaction Tool (5) along with the 2 EN-52461 - 100  Adapter Cam Phaser Torque Reaction Tool (2, 3) from the engine.
  114. GM5512539

    Disconnect harness retainers as needed.

  115. Radiator Surge Tank Outlet Hose Clip Bracket Nut [2x] - Remove [2x]
  116. Radiator Surge Tank Inlet Pipe Bracket - Remove [2x]
  117. GM5336345

    Retainer (1) - Unclip [5x]

  118. Engine Wiring Harness (2) - Reposition away
  119. GM5336351

    Engine Wiring Harness Conduit Bracket Bolt (1) - Remove

  120. Engine Wiring Harness Conduit Nut (2) - Remove
  121. Engine Wiring Harness Bracket (3) - Remove
  122. GM5135656

    Electrical Connector (1) @ Turbocharger Bypass Valve Solenoid (2) - Disconnect

  123. GM5311257

    Electrical Connector (1) @ Turbocharger Wastegate Actuator - Disconnect

  124. Engine Wiring Harness Retainer (2) @ Turbocharger Coolant Feed and Return Pipe - Remove [2x]
  125. GM5124375

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

  126. Turbocharger Coolant Feed Hose Clamp (2) - Disengage [2x] - Hose Clamp Replacement Guidelines - Spring Type
  127. GM5124376

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

  128. GM5124385

    Turbocharger Coolant Feed and Return Pipe (1) - Remove

  129. Turbocharger Coolant Feed and Return Pipe Gasket (2) - Remove and DISCARD
  130. GM5034489

    Camshaft Cover Stud (1) - Remove [14x]

  131. Camshaft Carrier Bolt (2) - Remove-M6 [4x]
  132. Camshaft Carrier Bolt (3) - Remove-M8 [4x]
  133. GM5034491

    Camshaft Carrier (1) - Remove

  134. Camshaft Cover Gasket (2) - Remove and DISCARD
  135. GM5020686
    NOTE:
    • Many internal engine components will develop specific wear patterns on their friction surfaces.
    • Components MUST be separated, marked, or organized in a way to ensure installation to their original location and position. Take precautions in order to prevent interchanging of parts.
    • Tag or mark each part immediately when removed. Indicate location, direction, or orientation when necessary.

    Remove the 8 intake valve rocker arms (1) with hydraulic valve lash adjuster (2).

  136. GM5020687

    Remove the 8 exhaust valve rocker arms (1) with hydraulic valve lash adjuster (2).

  137. GM5020690

    Valve Rocker Arm (1) @ Hydraulic Valve Lash Adjuster (2) - Remove [16x]

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