Here's a general outline of the process. Specific steps might vary slightly depending on the trim level and exact model of your Cavalier. Always consult a repair manual specific to your vehicle year and model for the most accurate and detailed instructions.
Tools You'll Likely Need:
* Security Torx bits: The steering column usually uses security Torx screws. You'll need the correct size and type.
* Small screwdrivers: Phillips and possibly flathead, depending on your vehicle.
* Needle-nose pliers or similar: For reaching small parts and possibly removing the cylinder retaining clip.
* A plastic trim removal tool: To avoid scratching the plastic around the steering column.
* A shop rag or paper towels: To keep the area clean and prevent dirt from getting into the ignition system.
* A replacement ignition lock cylinder (if needed): Getting this from a reputable supplier (like a dealer or auto parts store that verifies your VIN) is vital.
* Repair manual specific to your 1999 Chevrolet Cavalier: This is crucial for precise instructions and diagrams.
General Steps (Consult your repair manual for exact details):
1. Disconnect the battery: This is the most important safety step. Disconnect the negative (-) terminal first.
2. Remove the steering column shroud: This is the plastic cover around the steering column. Carefully pry it off using your plastic trim removal tool.
3. Remove the ignition switch: This might involve removing some screws or fasteners that hold the switch in place. Your repair manual will show the exact location and type of fasteners.
4. Locate the ignition lock cylinder retaining clip or screws: This is what holds the cylinder in place. The location varies. Your manual will show its location and how to remove it.
5. Remove the ignition lock cylinder: Once the retaining clip or screws are removed, the cylinder should slide out. Be aware of the ignition key; you may need to turn it to a certain position to release the cylinder.
6. Install the new cylinder (if replacing): If you're replacing the cylinder, carefully install the new one, making sure the retaining clip or screws are securely fastened.
7. Reassemble everything: Carefully put the ignition switch back in place, then the steering column shroud, and reconnect the battery.
Important Considerations:
* Steering Wheel Lock: The steering wheel might lock after disconnecting the battery. Make sure you can turn the steering wheel freely before proceeding.
* Airbag: Do not work near the airbag. If you need to remove any components near the steering wheel, disconnect the battery first.
* Wiring: Be very careful not to damage any wires or connectors.
* Security: Your ignition system could use a transponder system for theft prevention. If you're replacing the ignition lock cylinder, you'll likely need to have the new one programmed to your car by a locksmith or dealer.
This is a simplified overview. Again, I strongly recommend obtaining a repair manual for your specific 1999 Chevrolet Cavalier before attempting this repair. The manual will provide detailed instructions with diagrams and warnings, significantly reducing the risk of damage to your vehicle. If you're uncomfortable with any step, seek professional help.
