Here's a general outline of the process. This is not a comprehensive guide and may not be perfectly accurate for all 1985 Cavalier models. Always consult a repair manual specific to your vehicle's year and trim level. A Haynes or Chilton manual will be invaluable.
1. Preparation:
* Safety First: Disconnect the negative battery cable before starting any work.
* Gather Tools: You'll likely need a variety of screwdrivers (Phillips and flathead), possibly sockets and wrenches, and possibly a plastic trim removal tool.
* Consult a Repair Manual: A repair manual specific to your 1985 Chevy Cavalier is crucial. It will provide detailed diagrams and instructions specific to your vehicle's model and year.
2. Accessing the Ignition Switch:
* Steering Column Removal (Likely Necessary): This is the most challenging part. You'll likely need to partially or fully remove the steering column shroud (plastic covering) and potentially even partially dismantle the steering column itself to access the ignition switch. This involves removing various screws, bolts, and possibly electrical connectors. Your repair manual will guide you through this process.
* Column Locking Mechanism: Be aware of the steering column lock mechanism. You might need to maneuver the steering wheel to a specific position to release it.
* Wiring Harness: The ignition switch is connected to a wiring harness. Carefully disconnect all the electrical connectors. Take photos or make a diagram to help you reconnect them correctly later.
3. Replacing the Ignition Switch:
* Remove the Old Switch: Once you have access, carefully remove the old ignition switch. It may be held in place by screws, clips, or a retaining ring. Again, your repair manual will be your guide here.
* Install the New Switch: Install the new ignition switch, ensuring it's properly seated and aligned. Reconnect the wiring harness, matching the wires to their correct locations precisely. Refer to your diagrams and photos.
* Reassemble: Carefully reassemble the steering column and shroud, ensuring all screws and bolts are tightened securely.
4. Testing:
* Reconnect the Battery: Reconnect the negative battery cable.
* Test the Ignition: Try the ignition switch. Check all functions (starting, accessories, etc.).
* Steering Wheel Lock: Make sure the steering wheel lock operates correctly.
Important Considerations:
* Key: You may need to obtain the correct key for the replacement ignition switch or have your new key matched to the new ignition switch.
* Security System: If your Cavalier has an aftermarket or factory security system, it may be necessary to reprogram the system after replacing the ignition switch. Failure to do so can render your security system ineffective.
* Professional Help: If you are not comfortable with this repair, seek professional assistance from a qualified mechanic. This repair can be complex, and making a mistake could result in costly damage.
Remember, this is a general overview. Always refer to a repair manual specific to your 1985 Chevy Cavalier for detailed instructions and diagrams. Safety should be your top priority throughout the entire process.
