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.
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.
Important: Suitably support the exhaust system where hangers are removed.
In order to remove the exhaust seal disconnect any hangers necessary to reposition the exhaust system.
Reposition the exhaust system.

Fig 1: Exhaust Manifold Pipe
Courtesy of GENERAL MOTORS CORP.
Remove the exhaust manifold pipe gasket.

Fig 2: Exhaust Manifold Pipe Gasket
Courtesy of GENERAL MOTORS CORP.