Notice: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. If the vehicle is equipped with All-Wheel-Drive (AWD), remove the propeller shaft. Refer to Propeller Shaft Replacement .
3. Remove the catalytic converter to exhaust manifold nuts.
4. Remove the connector position assurance (CPA) retainer.
5. Disconnect the heated oxygen sensor (HO2S) electrical connector.



6. Remove the catalytic converter to muffler bolts.
7. Remove and discard the catalytic converter to muffler gasket.



8. If equipped with regular production option (RPO) LX9 and front wheel drive (FWD), remove the catalytic converter (1).
9. If equipped with RPO LX9 and AWD, remove the catalytic converter (2).



10. If equipped with RPO LY7 and FWD, remove the catalytic converter (1).
11. If equipped with RPO LY7 and AWD, remove the catalytic converter (2).
12. Remove the HO2S . Refer to Heated Oxygen Sensor 2 Replacement for the 3.5L engine or Heated Oxygen Sensor 2 Replacement for the 3.6L engine.

1. Install the HO2S . Refer to Heated Oxygen Sensor 2 Replacement for the 3.5L engine or Heated Oxygen Sensor 2 Replacement for the 3.6L engine.
2. If equipped with RPO LY7 and FWD, install the catalytic converter (1).
3. If equipped with RPO LY7 and AWD, install the catalytic converter (2).



4. If equipped with RPO LX9 and FWD, install the catalytic converter (1).
5. If equipped with RPO LX9 and AWD, install the catalytic converter (2).



6. Install a NEW catalytic converter to muffler gasket.

Notice: Refer to Fastener Notice in the Preface section.

7. Install the catalytic converter to muffler bolts.

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




8. Install the catalytic converter to exhaust manifold nuts.

Tighten
Tighten the nut to 34 N·m (25 lb ft).

9. Connect the HO2S electrical connector.
10. Install the CPA retainer.
11. If the vehicle is equipped with AWD, install the propeller shaft. Refer to Propeller Shaft Replacement .
12. Lower the vehicle.