Express 3/4 Ton Van V8-4.8L VIN V (2003)
Catalytic Converter: Service and Repair
Converter Dual Exhaust - Right
Catalytic Converter Replacement (Dual Exhaust - Right)
Removal Procedure
1. Raise the vehicle. Refer to Vehicle Lifting.
2. Disconnect the oxygen sensor connectors.
3. Remove the exhaust hanger bolts and hanger from the vehicle.
Caution: Refer to Exhaust Service Caution in Service Precautions.
Caution: Refer to Protective Goggles and Gloves Caution in Service Precautions.
4. Remove the nuts retaining the exhaust pipe flange to the catalytic converter pipe.
5. Loosen the nut retaining the exhaust pipe clamp to the muffler.
6. Remove the exhaust pipe and flange gasket.
Installation Procedure
Notice: Refer to Fastener Notice in Service Precautions.
1. Remove the oxygen sensors and install into new exhaust pipe.
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Tighten the sensors to 42 Nm (31 ft. lbs.).
2. Install new gasket to the catalytic converter pipe flange.
3. Install the exhaust pipe to the vehicle.
4. Install the nuts for the catalytic converter pipe to exhaust pipe.
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Tighten the flange nuts to 48 Nm (35 ft. lbs.).
5. Tighten the exhaust pipe clamp nut.
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Tighten the nut to 54 Nm (40 ft. lbs.).
