How do you change out a key ignition on a 1976 Chevy Nova?

To change the ignition key cylinder on a 1976 Chevy Nova, first disconnect the battery to ensure safety. Remove the steering column cover by unscrewing the screws, then locate the ignition switch assembly. Use a suitable tool to release the retaining clip and pull out the old ignition cylinder. Finally, insert the new cylinder, reassemble the column cover, and reconnect the battery.