When I was driving 3 days ago, my "security" light came on. on 2003 Oldsmobile Alero

The light stayed on until I turned the car off, and has not been on since. Do I need to have the car looked at? The manual says that if the light comes on while driving, that something is wrong with the Passlock system. Does that mean that the car will continue to start?

Asked by for the 2003 Oldsmobile Alero
Failure of the passlock sensor is a common Alero problem, it may at some point cause a starting problem. RepairPal has reported this as a common problem - There is also an article with more information -