Installation Procedure

Install the heated oxygen sensors (HO2S) as necessary.
Install the catalytic converter and new gasket to the vehicle.
Install catalytic converter to the catalytic converter hanger.

Fig 1: Installing Catalytic Converter To Catalytic Converter Hanger
Courtesy of GENERAL MOTORS CORP.
Install the muffler and new gasket to the catalytic converter.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the muffler to the catalytic converter flange nuts.
Tighten

Tighten the muffler to the catalytic converter flange nuts to 35 N.m (26 lb ft).

Fig 2: Installing Muffler And New Gasket To Catalytic Converter
Courtesy of GENERAL MOTORS CORP.
Install the catalytic converter to the exhaust manifold pipe flange nuts.
Tighten

Tighten the catalytic converter to the exhaust manifold pipe flange nuts to 35 N.m (26 lb ft).

Fig 3: Installing Catalytic Converter To Exhaust Manifold Pipe Flange Nuts
Courtesy of GENERAL MOTORS CORP.
Connect the heated oxygen sensor (HO2S) electrical connection.
Lower the vehicle.

Fig 4: Connecting Heated Oxygen Sensor (HO2S) Electrical Connection
Courtesy of GENERAL MOTORS CORP.