Removal Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The catalytic converter is serviced by replacing the entire assembly. Always replace the gaskets at the front and rear flanges when servicing the catalytic converter. Never install the original gasket.

Fig 1: HO2S Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Remove the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 .
Lower the vehicle.
Disconnect the engine wiring harness electrical connector from the HO2S electrical connector (1)

Fig 2: Exhaust Manifold Heat Shield Bolts

Courtesy of GENERAL MOTORS CORP.

Remove the right side exhaust manifold heat shield bolts (1).
Remove the right side exhaust manifold heat shield.

Fig 3: Right Side Catalytic Converter To Exhaust Manifold Nuts

Courtesy of GENERAL MOTORS CORP.

Remove the right side catalytic converter to exhaust manifold nuts (1, 2 and 3).
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Support the exhaust system.

Fig 4: Catalytic Converter & Nuts

Courtesy of GENERAL MOTORS CORP.

Remove the catalytic converter to intermediate muffler nuts (1).
Reposition the muffler assembly rearward until the catalytic converter (2) can be removed.
Remove the catalytic converter.
Remove the catalytic converter gaskets.
Clean and inspect the exhaust manifold and the exhaust pipe gasket mating surfaces.