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Home >> Cadillac >> 2021 >> CT4 V, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.7L (L3B) - Repair Instructions - Ct4 (4 Of 6) >> Intake Manifold Replacement >> Removal Procedure

Removal Procedure

  1. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  2. Remove the oil fill cap.
  3. GM5432171Courtesy of GENERAL MOTORS COMPANY

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

  4. Lift up on the front of the intake manifold cover (2).
  5. GM5432174Courtesy of GENERAL MOTORS COMPANY

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

  6. GM5456746Courtesy of GENERAL MOTORS COMPANY

    Intake Manifold Cover Bolt (1) - Remove

  7. GM5456829Courtesy of GENERAL MOTORS COMPANY

    Intake Manifold Cover Insulator (1) - Remove

  8. GM5129466Courtesy of GENERAL MOTORS COMPANY

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

  9. GM5504092Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Refer to Diesel/Gasoline Vapors Warning .

    WARNING:

    Refer to Safety Glasses Warning .

    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. GM5504095Courtesy of GENERAL MOTORS COMPANY

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

  12. Retainer (2) - Unclip [3x]
  13. Radiator Surge Tank Inlet Hose (3) - Reposition
  14. GM5509132Courtesy of GENERAL MOTORS COMPANY

    Throttle Body Electrical Connector (1) - Disconnect

  15. GM5504108Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Bolt (1) - Remove

  16. Electrical Connector (2) - Disconnect [2x]
  17. Retainer (3) - Unclip [4x]
  18. Engine Wiring Harness (4) - Reposition
  19. GM5402098Courtesy of GENERAL MOTORS COMPANY

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

  20. Evaporative Emission Canister Purge Pump (2) - Remove
  21. GM5507437Courtesy of GENERAL MOTORS COMPANY

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

  22. Intake Manifold Cover Stud (2) - Remove [3x]
  23. GM5507441Courtesy of GENERAL MOTORS COMPANY

    Upper Intake Manifold Cover (1) - Remove

  24. GM5517201Courtesy of GENERAL MOTORS COMPANY

    Oil Level Indicator Tube Bracket Bolt (1) - Remove

  25. Oil Level Indicator Tube (2) - Remove
  26. GM5399157Courtesy of GENERAL MOTORS COMPANY

    Retainer Spring (1) - Release

  27. Charge Air Cooler Outlet Air Tube (2) @ Throttle Body (3) - Remove
  28. GM5507451Courtesy of GENERAL MOTORS COMPANY

    Retainer (1) - Unclip

  29. GM5508646Courtesy of GENERAL MOTORS COMPANY

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

  30. GM5507557Courtesy of GENERAL MOTORS COMPANY

    Intake Manifold (1) - Remove

  31. GM5509155Courtesy of GENERAL MOTORS COMPANY

    Throttle Body Bolt (1) - Remove [3x]

  32. Throttle Body (2) - Remove
  33. Throttle Body Seal (3) - Remove and DISCARD
  34. Fig 1: Identifying Intake Manifold Components (L3B)
    GM5045008Courtesy of GENERAL MOTORS COMPANY

    Intake Manifold Insulator Nut (2) - Remove [4x]

  35. Intake Manifold Cover (1) - Remove
  36. Intake Manifold Gasket (3) - Remove and DISCARD [4x]
  37. Crankcase Vent Passage Seal (4) - Remove and DISCARD
  38. Intake Air Pressure and Temperature Sensor Bolt (6) - Remove
  39. Intake Air Pressure and Temperature Sensor (5) - Remove
  40. Intake Manifold Cover Stud (7) - Remove [2x]