Catalytic Converter Replacement - Right Side

Catalytic Converter Replacement - Right Side (LH8) (5.3L)

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





1. Remove the right torsion bar. Refer to Torsion Bar Replacement (Torsion Bar Replacement).
2. Remove the heated oxygen sensors (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (Service and Repair) and Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (Service and Repair).
3. Remove the transmission support crossmember. Refer to Transmission Support Crossmember Replacement (2WD) (Transmission Support Crossmember Replacement)Transmission Support Crossmember Replacement (4WD) (Transmission Support Crossmember Replacement).
4. Remove the catalytic converter to muffler nuts (1).
5. Loosen the muffler to catalytic converter clamp (2).




6. With the aid of an assistant, separate the muffler hangers from the insulators (1).
7. Separate the muffler from the catalytic converters.
8. Reposition the muffler (2) rearward as far as possible, and support using the rear axle and jack stands.




9. Remove front propeller shaft. Refer to Front Propeller Shaft Replacement (Front Propeller Shaft Replacement).
10. Remove the catalytic converter to exhaust manifold nuts (2).
11. With the aid of an assistant, remove the catalytic converter (3) and seal (1).

Installation Procedure




1. With the aid of an assistant, install the catalytic converter (3) and seal (1).
2. Install front propeller shaft. Refer to Front Propeller Shaft Replacement (Front Propeller Shaft Replacement).

Caution: Refer to Fastener Caution (Fastener Caution).

Note: Ensure at least 7 mm of clearance between the bell housing and the catalytic convertor. Use an assistant to hold and rotate the pipe counterclockwise while tightening the nuts.

3. Install the catalytic converter to exhaust manifold nuts (2).

Tighten the nuts to 50 Nm (37 lb ft).




4. With the aid of an assistant, remove the muffler (2) from the jack stands.
5. Install the muffler to the catalytic converters.
6. Install the muffler hangers to the insulators (1).




7. Install the catalytic converter to muffler nuts (1).

Tighten the nuts to 45 Nm (33 lb ft).

8. Tighten the muffler to catalytic converter clamp (2).

Tighten the clamp to 43 Nm (32 lb ft).

9. Install the transmission support crossmember. Refer to Transmission Support Crossmember Replacement (2WD) (Transmission Support Crossmember Replacement)Transmission Support Crossmember Replacement (4WD) (Transmission Support Crossmember Replacement).
10. Install the HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (Service and Repair) and Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (Service and Repair).
11. Install the right torsion bar. Refer to Torsion Bar Replacement (Torsion Bar Replacement).