Catalytic Converter Replacement - Right Side LY7

Caution: Refer to Exhaust Service Caution in the Preface section.

Caution: Refer to Protective Goggles and Glove Caution in the Preface section.

1. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Right Side .
2. Remove the catalytic converter to exhaust manifold nuts (1).
3. Remove the bank 1 sensor 2 heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 .



4. Remove the left catalytic converter (3) to right catalytic converter (1) nuts (2).



5. Remove the exhaust pipe to right catalytic converter nuts.



6. Remove the catalytic converter from the vehicle.
7. Remove and discard the catalytic converter to exhaust manifold gasket (1).
8. Remove and discard the left catalytic converter to right catalytic converter gasket (2).

1. Install a NEW catalytic converter to exhaust manifold gasket (1) onto the catalytic converter.
2. Install the catalytic converter to the vehicle.
3. Install a NEW left catalytic converter to right catalytic converter gasket (2) between the converters.

Notice: Refer to Fastener Notice in the Preface section.




4. Install the left catalytic converter to right catalytic converter nuts.

Tighten
Tighten the nuts to 25 N·m (18 lb ft).




5. Install the exhaust pipe to right catalytic converter nuts.

Tighten
Tighten the nuts to 25 N·m (18 lb ft).

6. Install the bank 1 sensor 2 HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 .



7. Install the catalytic converter to exhaust manifold nuts (1).

Tighten
Tighten the nuts to 45 N·m (33 lb ft).

8. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Right Side .