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.

Raise and support the vehicle.
Important: Do not remove the muffler.
Remove the fasteners that attach the muffler to the catalytic converter.
Reposition the muffler in order to access the heat shield rivets.
Use a drill in order to remove the heat shield rivets.
Remove the exhaust muffler heat shield from the vehicle.

Fig 1: Removing Fasteners That Attach Muffler To Catalytic Converter
Courtesy of GENERAL MOTORS CORP.