2004 Grand Prix security light flashes while car runs. how do i clear it?

If the security light on your 2004 Grand Prix is flashing while the car is running, it may indicate an issue with the vehicle's anti-theft system. To clear it, try turning off the ignition, then wait for about 10 minutes before restarting the car. If the light persists, check the owner's manual for specific troubleshooting steps or consider disconnecting the battery for a few minutes to reset the system. If the problem continues, it may require professional inspection.