What do I fix if my gfs 2002 olds alero has the security light on but runs and drives fine

There are a few things that cause that light to come on including the instrument cluster, the most common is the ignition switch because it is the only thing that gets moved frequently. You know about the ten minute process? As long as the vehicle starts and runs good it should clear after a few key cycles. If it decides to not start then do the ten minute thing and it should clear after that. It usually means it detected a fault while the engine was running. No big deal.