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Home >> Chevrolet >> 2017 >> Cruze LS, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Exhaust System >> Repair Instructions >> Catalytic Converter Replacement >> Removal Procedure

Removal Procedure

  1. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
    2. Fig 1: Nitrogen Oxides Sensor
    GM4325730Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do not bend the cable sharply at the base of either the sensing unit or sensor ECU in the final mounting position.

  2. Remove Nitrogen Oxides Sensor (2)
    3. Fig 2: Turbocharger Heat Shield, Bolt And Nut
    GM4211414Courtesy of GENERAL MOTORS COMPANY
  3. Remove Turbocharger Heat Shield Bolt (1)
  4. Remove Turbocharger Heat Shield Nut (3)
  5. Remove Turbocharger Heat Shield (2)
    6. Fig 3: Catalytic Converter Heat Shield Bolt
    GM4211404Courtesy of GENERAL MOTORS COMPANY
  6. Remove Catalytic Converter Heat Shield Bolt (1)
    7. Fig 4: Catalytic Converter Clamp
    GM4211430Courtesy of GENERAL MOTORS COMPANY
  7. Loosen Catalytic Converter Clamp (1)
    8. Fig 5: Exhaust Temperature Sensor
    GM4211405Courtesy of GENERAL MOTORS COMPANY
  8. Remove Exhaust Temperature Sensor (1)
  9. Raise and support the vehicle. Lifting and Jacking the Vehicle
  10. Remove Front Compartment Insulator Front Compartment Insulator Replacement
    11. Fig 6: Exhaust Pressure Differential Sensor Hoses And Pipes
    GM4199156Courtesy of GENERAL MOTORS COMPANY
  11. Loosen Clamp (1)
    12. NOTE:

    Mind the different hose diameters.

  12. Remove the 2 exhaust pressure differential sensor hoses (2) from the exhaust pressure differential sensor pipes (3).
    13. Fig 7: Catalytic Converter Heat Shield Bolt
    GM4211406Courtesy of GENERAL MOTORS COMPANY
  13. Remove Catalytic Converter Heat Shield Bolt (1)
    14. Fig 8: Exhaust Front Pipe Gasket
    GM4210755Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Do not bend the exhaust flex pipe more than 10 degrees in any direction. Bending of more than 10 degrees or twisting in a range of ±0.5 degrees will damage the exhaust flex decoupler.

  14. Remove Exhaust Front Pipe Nut (4)
  15. Remove Exhaust Front Pipe (1)@Catalytic Converter (2)
  16. Remove Exhaust Front Pipe Gasket (3) and DISCARD
    17. Fig 9: Catalytic Converter Heat Shield
    GM4276339Courtesy of GENERAL MOTORS COMPANY
  17. Remove Catalytic Converter Heat Shield (1)
  18. Remove Transmission Mount Strut Bracket
    19. Fig 10: Powertrain Unit
    GM4210757Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    A second technician is required.

  19. Unsupport the powertrain unit (1) and push the powertrain unit (1) against driving direction to get access for the catalytic converter removal.
    20. Fig 11: Catalytic Converter Brace Nut And Catalytic Converter Stud
    GM4211431Courtesy of GENERAL MOTORS COMPANY
  20. Remove Catalytic Converter Brace Nut (1)
  21. Remove Catalytic Converter Stud (2)
    22. Fig 12: Catalytic Converter, Clamp And Gasket
    GM4276341Courtesy of GENERAL MOTORS COMPANY
  22. Remove Catalytic Converter (3)
  23. Release and support the powertrain unit.
  24. Remove Catalytic Converter Clamp (1) and DISCARD
  25. Remove and DISCARD the gasket.(2)
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