CTS V6-2.8L (2006)
3. Carefully install the catalytic converter to the exhaust manifold.
4. Install the catalytic converter nuts.
5. Connect the oxygen sensor electrical connector.
6. Install the exhaust pipe and nuts to the left and right side catalytic converters.
Tighten the nuts to 22 Nm (16 ft. lbs.).
Notice: Refer to Fastener Notice in Service Precautions.
Important: Inspect the catalytic converter seals. Replace the seals if they are worn or damaged.
7. Lower the vehicle.
8. Tighten the catalytic converter to exhaust manifold nuts.
Tighten the catalytic converter nuts to 50 Nm (37 ft. lbs.).
9. Install the right bank exhaust manifold heat shield.
