Copied from a Grand Am manual:

So, if your vehicle is equipped with the Passlock
theft-deterrent system:

Passlock is a passive theft-deterrent system. Passlock
enables fuel if the ignition lock cylinder has not been
tampered with. During normal operation, the SECURITY light will go
off approximately five seconds after the ignition key is
turned to ON and the engine is started.
If the SECURITY light flashes with the key in ON,
wait 10 minutes until the light goes off. Then turn the
ignition to OFF before attempting to start the engine.
If the SECURITY light stays on with the key in ON,
turn the key to OFF and then back to ON.

Hope this helps.