How do you replace catalytic converter on 2001 Chevy cavalier?

To replace the catalytic converter on a 2001 Chevy Cavalier, start by safely lifting the vehicle and securing it with jack stands. Disconnect the exhaust pipes from the catalytic converter using a wrench, and unbolt the converter from its mounting points. Remove the old catalytic converter and install the new one, ensuring a proper fit and sealing any joints with exhaust gasket material if needed. Finally, reconnect the exhaust pipes and lower the vehicle, checking for leaks before driving.