Here's a general outline. This is not a substitute for a proper service manual or professional advice. Improperly done, this can leave your car vulnerable to theft.
Tools You'll Likely Need:
* Screwdrivers: Phillips and flathead, various sizes.
* Socket set: Metric, likely including a 7/16" or 11mm socket (common for steering column bolts).
* Pliers: Needle-nose and regular.
* Ignition cylinder removal tool: This specialized tool is almost essential to avoid damage. It's designed to hold the cylinder while you remove and replace it. You can sometimes find these at auto parts stores or online.
* New ignition cylinder: Get the correct one for your vehicle. The key number is crucial! The wrong cylinder will leave your car inoperable.
* Wrench(es): Possibly for the steering column.
* Penetrating oil (PB Blaster, etc.): To help loosen any seized bolts or parts.
* Shop rags: To keep things clean.
* Possibly a steering wheel lock plate removal tool: Depends on your model and whether it has one.
General Steps (Highly Variable Depending on Model):
1. Disconnect the battery: This is vital for safety. Disconnect the negative terminal first.
2. Steering Wheel Removal (Possibly): In some cases, you may need to remove the steering wheel to access the ignition cylinder. This is a significant task involving the steering wheel lock plate and should only be attempted if you're experienced with this.
3. Access the Ignition Cylinder: This usually involves removing the lower steering column shroud or trim panel. This might require removing other components (like the turn signal switch) or undoing multiple screws and fasteners. Consult a service manual for the proper steps to avoid damage.
4. Remove the Ignition Cylinder: This is where the ignition cylinder removal tool is almost essential. It's inserted into the ignition switch to hold the cylinder in place while you remove it. There will be a retaining clip or other mechanism securing the cylinder. The removal tool is designed to help disengage it.
5. Install the New Ignition Cylinder: Use the removal tool to carefully align the new cylinder and engage its retaining mechanism.
6. Reassemble: Carefully put everything back together in reverse order of disassembly. Ensure all screws and fasteners are correctly secured.
7. Reconnect the battery:
8. Test: Try your new key to ensure the ignition operates correctly.
Important Considerations:
* Service Manual: A factory service manual for your specific 1979 El Camino is your best resource. It will provide detailed diagrams and instructions specific to your vehicle.
* Professional Help: If you are not comfortable with automotive repair, it is best to take your car to a qualified mechanic. Improper installation can lead to damage or create a security risk.
* Key Number: The key number is crucial when ordering a new ignition cylinder. You'll likely need this number to find a proper replacement.
* Security: After installation, verify the new key operates the steering lock correctly.
This is a general overview. The precise steps will vary considerably based on your specific El Camino model. Refer to a service manual or consult a professional for the correct and safe procedure. Failing to do so could result in damage to your vehicle or create a security vulnerability.
