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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Exhaust System) >> Repair Instructions >> Catalytic Converter Replacement >> Catalytic Converter Replacement (LTG) >> Removal Procedure

Removal 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.
WARNING:

In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

WARNING:

Avoid contact with HOT components. Wear safety glasses and protective gloves to avoid personal injury.

  1. Turbocharger Heat Shield - Remove - Turbocharger Heat Shield Replacement
  2. Exhaust Muffler - Remove - Exhaust Muffler Replacement (LCV) Exhaust Muffler Replacement (LF4) Exhaust Muffler Replacement (LTG) 
  3. Fig 1: Heated Oxygen Sensor Electrical Connector
    GM4406263Courtesy of GENERAL MOTORS COMPANY
  4. Heated Oxygen Sensor Electrical Connector - Disconnect
  5. Fig 2: Catalytic Converter Brace Bracket Bolt
    GM4406370Courtesy of GENERAL MOTORS COMPANY
  6. Catalytic Converter Brace Bracket Bolt - Remove
  7. Catalytic Converter Brace Bracket-Lower - Remove
  8. Lower the vehicle. Lifting and Jacking the Vehicle (Base)Lifting and Jacking the Vehicle (V-Series)
  9. Fig 3: Catalytic Converter Seal
    GM4406530Courtesy of GENERAL MOTORS COMPANY
  10. Catalytic Converter Nut - Remove
  11. Raise and support the vehicle. Lifting and Jacking the Vehicle (Base)Lifting and Jacking the Vehicle (V-Series)
  12. Fig 4: Catalytic Converter Brace Bracket
    GM4406306Courtesy of GENERAL MOTORS COMPANY
  13. Catalytic Converter Brace Bracket Bolt - Remove
  14. Catalytic Converter Brace Bracket-Upper - Remove
  15. Fig 5: Catalytic Converter Seal
    GM4406530Courtesy of GENERAL MOTORS COMPANY
  16. Warm Up Three-Way Catalytic Converter - Remove
  17. Catalytic Converter Seal - Remove and DISCARD