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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 - Left Side (LGX) >> 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. Intake Manifold Cover Replacement (LF4)Intake Manifold Cover Replacement (LGX) - Remove
  2. Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF4)Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LGX) - Disconnect
  3. Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF4)Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LGX) - Disconnect
  4. Raise and support the vehicle. Lifting and Jacking the Vehicle (Base)Lifting and Jacking the Vehicle (V-Series)
  5. Fig 1: Exhaust Muffler, Catalytic Converter & Mounting Components
    GM2788821Courtesy of GENERAL MOTORS COMPANY
  6. Catalytic Converter Nut - Remove
  7. Exhaust Muffler @Catalytic Converter - Separate
  8. DISCARD the gasket.
  9. Fig 2: Catalytic Converter, Gasket & Fasteners
    GM2805059Courtesy of GENERAL MOTORS COMPANY
  10. Catalytic Converter Nut @Cylinder Head - Remove
  11. DISCARD the gasket.
  12. If equipped, remove the catalytic converter brace bracket. Catalytic Converter Brace Bracket Replacement (LF4) Catalytic Converter Brace Bracket Replacement (LGX) 
  13. Catalytic Converter - Remove
  14. Transfer components as necessary.