Why do parking lights stay on 99 Oldsmobile Aurora?

Parking lights on a 1999 Oldsmobile Aurora may stay on due to a malfunctioning light switch, a stuck relay, or a fault in the vehicle's wiring. It could also be caused by a faulty timer module that fails to turn off the lights after the ignition is off. Checking the light switch and inspecting the relay and wiring for damage or shorts can help diagnose the issue. If the problem persists, consulting a professional mechanic may be necessary.