Removal Procedure

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

Raise and support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
NOTE: Refer to Catalytic Converter Movement Notice in Cautions and Notices.

IMPORTANT: Use caution handling the pipe that contains an oxygen sensor. Do not cut the wire. For removal or repositioning disconnect the connector.
Remove the exhaust manifold pipe stud nuts from the exhaust manifold studs.

Fig 1: Removing Exhaust Manifold Pipe Stud Nuts From Exhaust Manifold Studs
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Support the exhaust system where hangers are removed.
Remove the catalytic converter exhaust hangers.

Fig 2: Repositioning Catalytic Converter Exhaust Hangers
Courtesy of GENERAL MOTORS CORP.
Reposition the exhaust system.
Remove the exhaust manifold pipe gasket.

Fig 3: Removing Exhaust Manifold Pipe Gasket
Courtesy of GENERAL MOTORS CORP.