The two catalytic converters in a Chevy Motor lorry are connected to the exhaust development. They guidance incision pollutants and state emissions in assortment to apt both federal and administration regulations. Whether either catalytic converter is not working, it needs to be removed to proof for any blockages, or for replacement.
Instructions
1. Stand and ease the comprehensive Motor lorry on jack stands. Disconnect the annulling cable on the battery as a precaution.
2. Disengage the electrical connectors to the oxygen sensors. There are two oxygen sensors attached to each catalytic converter---a pre-converter sensor located near the front end of the converter and a post-converter sensor near the end.
3.4. Remove the bolts that attach the converter's header pipe to the exhaust manifold. The studs and nuts here often are rusty, so apply penetrating oil to them for easier removal.
Use a small ratchet wrench to remove the flange bolts connecting the catalytic converter to the exhaust pipe. Separate the pipe from the converter, and support the pipe. You can use the truck's floor jack, but place a board on top of the jack to keep it from damaging the pipe.
5. Take off the catalytic converter and its pipe assembly. Repeat for the other converter if needed.
6. Clean away any carbon deposits built up on the mounting flanges with brake cleaner or the penetrating oil. Discard the gaskets; use new gaskets on the flanges when the new catalytic converter is installed.
