Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.

Raise and support the vehicle.
If the vehicle is equipped with All-Wheel-Drive, remove the propeller shaft. Refer to PROPELLER SHAFT REPLACEMENT .
Remove the catalytic converter nuts from the exhaust manifold studs.

Fig 1: Removing Catalytic Converter Nuts From Exhaust Manifold Studs
Courtesy of GENERAL MOTORS CORP.
Remove the oxygen sensor.
Remove the catalytic converter bolts.
Remove the catalytic converter.

Fig 2: Removing Catalytic Converter Gasket And Bolts
Courtesy of GENERAL MOTORS CORP.