How do you program fob for Saturn Ion?

To program a key fob for a Saturn Ion, first, sit inside the car with all doors closed. Insert the key into the ignition and turn it to the "On" position without starting the engine, then turn it back to "Off." Repeat this process five times, ending in the "On" position; the locks will cycle to indicate programming mode. Press and hold the "Lock" and "Unlock" buttons on the fob simultaneously for about 15 seconds, then release them to complete the programming.