Catalytic Converter Replacement - Right Side LZ4

Important: The catalytic converter is serviced by replacing the entire assembly. Always replace the gaskets at the front and rear flanges when servicing the catalytic converter. Never install the original gasket.

1. Remove the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 .
2. Lower the vehicle.
3. Remove the right side exhaust manifold heat shield bolts (1).
4. Remove the right side exhaust manifold heat shield.



5. Remove the right side catalytic converter to exhaust manifold nuts (1).
6. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
7. Support the exhaust system.



8. Remove the catalytic converter to muffler nuts (1).
9. Reposition the muffler assembly rearward until the catalytic converter can be removed.
10. Remove the catalytic converter.
11. Remove the catalytic converter gaskets.
12. Clean and inspect the exhaust manifold and the exhaust pipe gasket mating surfaces.

1. Install the catalytic converter gasket onto the catalytic converter.
2. Reposition the muffler assembly rearward until the catalytic converter can be installed.
3. Install the catalytic converter.

Notice: Refer to Fastener Notice in the Preface section.

4. Install the catalytic converter nuts (1).

Tighten
Tighten the nuts to 60 N·m (44 lb ft).

5. Remove the support from the exhaust system.



6. Install the right side catalytic converter to exhaust manifold nuts (1).

Tighten
Tighten the nuts to 35 N·m (26 lb ft).




7. Install the right side exhaust manifold heat shield.
8. Install the right side exhaust manifold heat shield bolts (1).

Tighten
Tighten the nuts to 10 N·m (89 lb in).




9. Install the exhaust manifold heat shield.
10. Install the right side exhaust manifold heat shield bolts (1).

Tighten
Tighten the nuts to 10 N·m (89 lb in).

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

Catalytic Converter Replacement - Right Side LY7

Important: The catalytic converter is serviced by replacing the entire assembly. Always replace the gaskets at the front and rear flanges when servicing the catalytic converter. Never install the original gasket.

1. Remove the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 .
2. Lower the vehicle.
3. Disconnect the engine wiring harness electrical connector from the HO2S electrical connector (1)



4. Remove the right side exhaust manifold heat shield bolts (1).
5. Remove the right side exhaust manifold heat shield.



6. Remove the right side catalytic converter to exhaust manifold nuts (1).
7. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
8. Support the exhaust system.



9. Remove the catalytic converter to intermediate muffler nuts (1).
10. Reposition the muffler assembly rearward until the catalytic converter can be removed.
11. Remove the catalytic converter.
12. Remove the catalytic converter gaskets.
13. Clean and inspect the exhaust manifold and the exhaust pipe gasket mating surfaces.

1. Install the catalytic converter gasket onto the catalytic converter.
2. Reposition the muffler assembly rearward until the catalytic converter can be installed.
3. Install the catalytic converter.

Notice: Refer to Fastener Notice in the Preface section.

4. Install the catalytic converter to intermediate muffler nuts (1).

Tighten
Tighten the nuts to 60 N·m (44 lb ft).

5. Remove the support from the exhaust system.



6. Install the right side catalytic converter to exhaust manifold nuts (1).

Tighten
Tighten the nuts to 35 N·m (26 lb ft).




7. Install the right side exhaust manifold heat shield.
8. Install the right side exhaust manifold heat shield bolts (1).

Tighten
Tighten the nuts to 10 N·m (89 lb in).




9. Install the exhaust manifold heat shield.
10. Install the right side exhaust manifold heat shield bolts (1).

Tighten
Tighten the nuts to 10 N·m (89 lb in).




11. Connect the engine wiring harness electrical connector to the HO2S electrical connector (1)
12. Install the HO2S sensor. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2.