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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 60 (Engine Controls And Fuel - 2.7L (L3B) - Repair Instructions) >> Repair Instructions >> Knock Sensor Replacement (Position 1) >> 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. Disconnect the battery negative cable. 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. GM5456746

    Intake Manifold Cover Bolt (1) - Remove

  7. GM5456829

    Intake Manifold Cover Insulator (1) - Remove

  8. GM5129466

    Fuel Feed Pipe Bolt (1) @ Evaporative Emission Canister Purge Pump - Remove

  9. GM5504092

    Using the J-41769  Fuel Line Quick Disconnect Tool, disconnect and reposition the fuel feed pipe (1).

  10. Evaporative Emission Pipe (2) - Disconnect and reposition
  11. GM5504095

    Evaporative Emission Canister Purge Tube (1) - Disconnect and reposition

  12. Retainer (2) - Unclip [3x]
  13. Radiator Surge Tank Inlet Hose (3) - Reposition
  14. GM5509132

    Throttle Body Electrical Connector (1) - Disconnect

  15. GM5504108

    Engine Wiring Harness Bolt (1) - Remove

  16. Electrical Connector (2) - Disconnect [2x]
  17. Retainer (3) - Unclip [4x]
  18. Engine Wiring Harness (4) - Reposition
  19. GM5517201

    Oil Level Indicator Tube Bracket Bolt (1) - Remove

  20. Oil Level Indicator Tube (2) - Remove
  21. GM5402098

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

  22. Evaporative Emission Canister Purge Pump (2) - Remove
  23. GM5507437

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

  24. Intake Manifold Cover Stud (2) - Remove [3x]
  25. GM5507441

    Upper Intake Manifold Cover (1) - Remove

  26. GM5399157

    Retainer Spring (1) - Release

  27. Charge Air Cooler Outlet Air Tube (2) @ Throttle Body (3) - Remove
  28. GM5507451

    Retainer (1) - Unclip

  29. GM5508646

    Intake Manifold Bolt (1) - Remove [6x]

  30. GM5507557

    Intake Manifold (1) - Remove

  31. GM5045008

    Intake Manifold Gasket (3) - Remove and DISCARD [4x]

  32. Crankcase Vent Passage Seal (4) - Remove and DISCARD
  33. GM5133779

    Electrical Connector (1) - Disconnect

  34. GM5395582

    Knock Sensor Bolt (1) - Remove

  35. Disconnect the knock sensor electrical connector.
  36. Knock Sensor (2) - Remove
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