Removal Procedure

WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

Raise and suitably support the vehicle.
Suitably support the exhaust system.
Remove the catalytic converter. Refer to Catalytic Converter Replacement (3.1 L) or Catalytic Converter Replacement (3.8L)

Fig 1: Catalytic Converter Gasket
Courtesy of GENERAL MOTORS CORP.
Remove the oxygen sensor wiring harness (3) from the catalytic converter heat shield.

Fig 2: Oxygen Sensor Wiring Harness From The Catalytic Converter Heat Shield
Courtesy of GENERAL MOTORS CORP.
Remove the catalytic converter heat shield pop rivets.
Remove the catalytic converter heat shield.

Fig 3: Catalytic Converter Heat Shield
Courtesy of GENERAL MOTORS CORP.