Catalytic Converter: Service and Repair

Catalytic Converter

Removal and Installation

NOTE: RH shown, LH similar.





1. WARNING: The electrical power to the air suspension system must be turned off prior to hoisting, jacking or towing an air suspension vehicle. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.

Turn the air suspension switch off.
2. Raise and support the vehicle.





3. Disconnect the heated oxygen sensor electrical connector.





4. Disconnect the catalyst monitor sensor electrical connector.





5. Remove and discard the nuts.





6. Remove the bolts, flag nuts and the catalytic converter.
^ Remove and discard the gasket.





7. NOTE: Make sure to apply a thin coat of anti-seize lubricant to the threads of the sensors before installation.

If necessary, remove the heated oxygen and catalyst monitor sensors.
8. To install, reverse the removal procedure.