Removal Procedure

WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.

Replace the entire converter assembly in order to properly service the 3-way catalytic converter.

Raise and suitably support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
Disconnect the Heated Oxygen Sensor connector. Refer to HEATED OXYGEN SENSOR .
Remove the exhaust manifold pipe nuts from the exhaust manifold pipe studs.

Fig 1: Removing Catalytic Converter & Components
Courtesy of GENERAL MOTORS CORP.
Remove the catalytic converter nuts from the exhaust pipe.
Remove the 3-way catalytic converter.

Fig 2: Removing 3-Way Catalytic Converter & Bolts
Courtesy of GENERAL MOTORS CORP.