Installation Procedure

NOTE: When inspecting or replacing exhaust system components, make sure there is adequate clearance from all points on the underbody to prevent overheating of the floor pan and possible damage to the passenger compartment insulation and trim materials.

Twist and slide the catalytic converter into the exhaust muffler.

Fig 1: Sliding Out Catalytic Converter Into Exhaust Muffler
Courtesy of GENERAL MOTORS CORP.
Install the catalytic converter hanger to the hanger bracket.

Fig 2: Installing Catalytic Converter Hanger To Hanger Bracket
Courtesy of GENERAL MOTORS CORP.

NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the catalytic converter hanger bolts.
Tighten

Tighten the catalytic converter hanger bolts to 41 N.m (30 ft lbs).
Install the exhaust manifold bolts.

Fig 3: Installing Exhaust Manifold Bolts
Courtesy of GENERAL MOTORS CORP.

Tighten

Tighten the exhaust manifold bolts to 48 N.m (35 ft lbs) alternating back and forth from the left to the right manifolds.
Tighten the exhaust pipe clamp bolt at the catalytic converter.
Tighten

Tighten the exhaust pipe clamp bolt to 48 N.m (35 ft lbs).
Install the oxygen sensor.

Fig 4: Installing Oxygen Sensor
Courtesy of GENERAL MOTORS CORP.

Tighten

Tighten the oxygen sensor to 42 N.m (31 ft lbs).
Connect the oxygen sensor electrical connector.

Fig 5: Connecting Oxygen Sensor Electrical Connector
Courtesy of GENERAL MOTORS CORP.
Install the CPA lock.
Lower the vehicle.