How do I remove key and cylinder from 1997 Nissan Altima?

To remove the key and cylinder from a 1997 Nissan Altima, start by disconnecting the battery to prevent any electrical issues. Next, remove the steering column cover by unscrewing the screws that hold it in place. Then, insert the key and turn it to the "ACC" position; there should be a small pin or release tab on the ignition cylinder that you can press while pulling the cylinder out. Finally, once the cylinder is free, you can remove the key from it.