* Ignition Key: The primary deterrent was the ignition key itself. Without the correct key, the car couldn't be started.
* Steering Wheel Lock: Some models might have had a factory-installed steering wheel lock, though this was not standard on all trims.
* Alarm System (possibly): A factory alarm system *might* have been an option on some higher trim levels, but it wasn't standard equipment. This would be a relatively simple alarm, not the complex systems with sensors and remote start capabilities found in newer vehicles.
In short, it lacked the electronic immobilizers and advanced anti-theft features common in later model years. It relied on simpler mechanical and, potentially, a basic electronic alarm system as its theft prevention.