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Installation Procedure

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Anti-Rotation Tab
    GM4406959Courtesy of GENERAL MOTORS COMPANY
  1. Inspect the anti-rotation tab of the lower brace bracket (2) to ensure that the tab is flush with the oil pan rib.
  2. CAUTION:

    Refer to Fastener Caution .

  3. If the brace bracket has been removed or adjustment is required, position the bracket and tighten the bolt (1) to 22 N.m (16 lb ft).
  4. Fig 2: Catalytic Converter Seal
    GM4406530Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Install a NEW catalytic converter seal.

  5. Catalytic Converter Seal - Install
  6. Warm Up Three-Way Catalytic Converter - Install
  7. Catalytic Converter Nut - Hand tighten
  8. Fig 3: Catalytic Converter Brace Bracket
    GM4406306Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure the brace bracket is flush with the engine block boss.

  9. Catalytic Converter Brace Bracket-Upper - Install
  10. Catalytic Converter Brace Bracket Bolt - Hand tighten
  11. Fig 4: Catalytic Converter Brace Bracket Bolt
    GM4406370Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure the brace bracket is flush with the catalytic converter tab.

  12. Catalytic Converter Brace Bracket-Lower - Install
  13. Catalytic Converter Brace Bracket Bolt - Hand tighten
  14. Fig 5: Catalytic Converter Seal
    GM4406530Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Tighten the catalytic converter nuts in a cross pattern.

  15. Catalytic Converter Nut - Tighten 50 N.m (37 lb ft)
  16. Fig 6: Catalytic Converter Brace Bracket
    GM4406306Courtesy of GENERAL MOTORS COMPANY
  17. Catalytic Converter Brace Bracket Bolt - Tighten 22 N.m (16 lb ft)
  18. Fig 7: Catalytic Converter Brace Bracket Bolt
    GM4406370Courtesy of GENERAL MOTORS COMPANY
  19. Catalytic Converter Brace Bracket Bolt - Tighten 22 N.m (16 lb ft)
  20. Fig 8: Heated Oxygen Sensor Electrical Connector
    GM4406263Courtesy of GENERAL MOTORS COMPANY
  21. Heated Oxygen Sensor Electrical Connector - Connect
  22. Exhaust Muffler - Install - Exhaust Muffler Replacement (LCV) Exhaust Muffler Replacement (LF4) Exhaust Muffler Replacement (LTG) 
  23. Turbocharger Heat Shield - Install - Turbocharger Heat Shield Replacement