Catalytic Converter Replacement - Left Side 6.0L Engine

1. Disconnect the battery ground cable from the battery. Refer to Battery Negative Cable Disconnection and Connection.

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

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





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

2. Remove the left catalytic converter to exhaust manifold retaining nuts (1).

Discard the nuts.

3. Disconnect the left catalytic converter (2) from the exhaust manifold (3).

Caution: Refer to Vehicle Lifting Caution in the Preface section.

4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.

Notice: Refer to Heated Oxygen and Oxygen Sensor Notice in the Preface section.




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




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

6. Remove the intermediate exhaust assembly to left catalytic converter retaining nuts (3).

Discard the nuts.

7. Disconnect the intermediate exhaust assembly (2) from the left catalytic converter (1).



8. Remove the left catalytic converter (1) from the vehicle.
9. Remove the left pre-catalytic converter HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1.

1. Install the left pre-catalytic converter HO2S to the left catalytic converter. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1.

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





Important: 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 intermediate exhaust assembly (2) to the left catalytic converter (1) by pushing back and down on the intermediate exhaust assembly (2).



4. Push up and forward on the left catalytic converter (2) to connect to the exhaust manifold (3).
5. Lower the vehicle.
6. Install the left catalytic converter to exhaust manifold retaining nuts (1).
7. Tighten the left catalytic converter to exhaust manifold retaining nuts (1).

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

Caution: Refer to Vehicle Lifting Caution in the Preface section.

8. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.



9. Install the intermediate exhaust assembly to left catalytic converter retaining nuts (3).

Notice: Refer to Fastener Notice in the Preface section.

10. Tighten the intermediate exhaust assembly to left catalytic converter retaining nuts (3).

Tighten
Tighten the nuts to 40 N·m (30 lb ft).




11. Connect the left pre-catalytic converter HO2S electrical connector (1).
12. 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 .
13. Lower the vehicle to the ground.
14. Connect the battery ground cable to the battery. Refer to Battery Negative Cable Disconnection and Connection.
15. If re-programming is required. Refer to Control Module References.
16. Perform diagnostic system check using diagnostic scan tool, clear all relative DTCs and inspect the system for correct operation.

Catalytic Converter Replacement - Left Side 3.6L Engine

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

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

1. Ignition OFF.

Caution: Refer to Battery Disconnect Caution in the Preface section.

2. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
3. Remove the engine cover. Refer to Engine Cover Replacement.
4. Remove the left pre-catalytic convertor heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1.
5. Remove the left exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side .
6. Remove the oil level indicator tube. Refer to Oil Level Indicator and Tube Removal .




Important: The left catalytic converter to exhaust manifold retaining nuts (2) are single use parts. They must be discarded after removal.

7. Remove the left catalytic converter to exhaust manifold retaining nuts (2).

Discard the nuts.

Caution: Refer to Vehicle Lifting Caution in the Preface section.

8. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.




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

9. Remove the exhaust crossover pipe assembly to left catalytic converter retaining nuts (3).

Discard the nuts.

10. Pull down and back on the left catalytic converter (3) to disconnect from the exhaust manifold (1).
11. Disconnect the exhaust crossover pipe assembly (2) from the left catalytic converter pipe (1).



12. Remove the left catalytic converter (1) from the vehicle.

Caution: Refer to Vehicle Lifting Caution in the Preface section.




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

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




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

Caution: Refer to Fastener Notice in the Preface section.

4. Install NEW exhaust crossover pipe assembly to left catalytic converter retaining nuts (3)

Tighten
Tighten the nuts to 40 N·m (30 lb ft).

5. Lower the vehicle.



6. Install NEW left catalytic converter to exhaust manifold retaining nuts (1)

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

7. 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.
8. Install the oil level indicator tube. Refer to Oil Level Indicator and Tube Removal .
9. Install the left exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side .
10. Install the left pre-catalytic convertor HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 .
11. Install the engine cover. Refer to Engine Cover Replacement.
12. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .