Catalytic Converter Replacement - Left Side

Catalytic Converter Replacement - Left Side (V8)

Removal Procedure

Warning: Refer to Exhaust Service Warning (Service Precautions).

Warning: Refer to Protective Goggles and Glove Warning (Protective Goggles and Glove Warning).

1. Ignition OFF.
Warning: Refer to Battery Disconnect Warning (Battery Disconnect Warning).

2. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (Service and Repair).





Note: The left catalytic converter to exhaust manifold retaining nuts (1) are single use parts. They must be discarded after removal.

3. Remove the left catalytic converter to exhaust manifold retaining nuts (1).
Discard the nuts.
4. Disconnect the left catalytic converter (2) from the exhaust manifold (3).

Danger: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.


5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair).





Caution: Refer to Fuel and Evaporative Emission Hose/Pipe Connection Cleaning Caution (Vehicle Damage Warnings)

6. Disconnect the left pre-catalytic converter heated oxygen sensor (HO2S) electrical connector (1).





Note: The exhaust crossover pipe assembly to left catalytic converter retaining nuts (3) are single use parts. They must be discarded after removal.

7. Remove the exhaust crossover pipe assembly to left catalytic converter retaining nuts (3).
Discard the nuts.
8. Disconnect the exhaust crossover pipe assembly (2) from the left catalytic converter (1).




9. Remove the left catalytic converter (1) from the vehicle.
10. Remove the left pre-catalytic converter HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (Service and Repair).

Installation Procedure

1. Install the left pre-catalytic converter HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (Service and Repair).





Note: Make sure that a NEW sealing ring is fitted prior to installation. Failure to comply may cause the exhaust system to perform poorly.

2. Install the left catalytic converter (1) to the vehicle.




3. Align the exhaust crossover pipe assembly (2) to the left catalytic converter (1).

Caution: Refer to Fastener Caution (Fastener Caution).

4. Install the exhaust crossover pipe assembly to left catalytic converter retaining nuts (3) and tighten to 40 Nm (30 lb ft).




5. Connect the left pre-catalytic converter HO2S electrical connector (1).





Note: Push up and forward on the left catalytic converter (2) to connect to the exhaust manifold (3).

6. Connect the left catalytic converter (2) to the exhaust manifold (3).

Note: Do not fully tighten the left catalytic converter to exhaust manifold retaining nuts (3) at this stage.

7. Install the left catalytic converter to exhaust manifold retaining nuts (1).
Do not fully tighten at this stage.
8. Lower the vehicle.
9. Tighten the left catalytic converter to exhaust manifold retaining nuts (1) to 45 Nm (33 lb ft).
10. Make sure that the exhaust system is clear of all other components and chassis. If the exhaust system is not clear of all the other components loosen all retaining nuts and re-align. Refer to Exhaust System Alignment (Procedures).
11. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (Service and Repair).