Why does the door chime sound continuously when opening the driver's door with keys out of the ignition
something is probably wrong with the tumblers in the ignition. The car still thinks the key is in even if it's not.
what andrew said OR Headlights are on.
Sounds like you are leaving lights on, either the park or headlights.
Looking for a Used Monte Carlo in your area?
CarGurus has 1,734 nationwide Monte Carlo listings starting at $1,695.
Search Chevrolet Monte Carlo Questions
Chevrolet Monte Carlo Experts