How do you replace the ignition on a 1995 Cadillac fleetwood that has the pass key security system?

To replace the ignition on a 1995 Cadillac Fleetwood with the PassKey security system, first disconnect the battery to avoid any electrical issues. Remove the steering column covers and the ignition switch assembly by detaching the retaining screws and electrical connectors. After installing the new ignition switch, ensure that the PassKey module is correctly aligned and functioning, as it is crucial for starting the vehicle. Finally, reconnect the battery and test the ignition to ensure it operates properly.