CTS V6-2.8L (2006)
Catalytic Converter: Service and Repair
Catalytic Converter Replacement - Left
Catalytic Converter Replacement - Left Side (LP1, LY7)
Removal Procedure
Caution: Refer to Exhaust Service Caution in Service Precautions.
Caution: Refer to Protective Goggles and Glove Caution in Service Precautions.
1. Remove the left bank exhaust manifold heat shield.
2. Remove the catalytic converter nuts.
3. Raise and support the vehicle. Refer to Vehicle Lifting.
4. Disconnect the oxygen sensor electrical connector.
5. Disconnect the muffler pipe from the left and right side catalytic converters.
6. Remove the exhaust pipe to right bank catalytic converter nuts.
7. Carefully remove the catalytic converter with the seal/heat shield and oxygen sensor from the exhaust manifold.
8. Remove the oxygen sensor from the catalytic converter.
Installation Procedure
1. Install the oxygen sensor to the catalytic converter.
2. Install the catalytic converter seal/heat shield to the catalytic converter.
Important: Inspect the catalytic converter seal/heat shield sealing surface. Replace the seal/heat shield if the sealing surface is worn or damaged.