How do you remove valve covers on 99 Cadillac Seville?

To remove the valve covers on a 1999 Cadillac Seville, first ensure the engine is cool and disconnect the negative battery terminal. Remove any components obstructing access, such as the air intake and ignition coils. Then, unbolt the valve cover using a socket wrench, carefully lifting it off to avoid damaging the gasket. Make sure to clean the mating surfaces before reinstalling or replacing the valve cover.