Here's a general outline. This is NOT a comprehensive guide, and variations exist depending on your specific truck's trim and configuration. You should always consult a repair manual specific to your year and model Silverado for detailed instructions and diagrams. A Haynes or Chilton manual is a good investment.
Tools you'll likely need:
* Security Torx bits (possibly): The steering column may have security Torx screws.
* Screwdrivers (Phillips and/or flathead): Various sizes.
* Sockets and wrenches: Appropriate sizes for the various bolts and nuts.
* Pliers: Needle-nose pliers can be helpful.
* A new ignition lock cylinder: Crucially, you'll need the correct one for your year and model. Getting the wrong one will be a waste of time and money. You may need the VIN to ensure you get the right part.
* Ignition key: Your existing key will be essential.
* Possibly a steering wheel puller: Depending on the design, you might need to remove the steering wheel.
General Steps (Consult your repair manual for precise details):
1. Disconnect the battery: This is crucial to prevent electrical shorts and potential injury.
2. Remove the steering wheel (possibly): This step might be necessary to access the ignition lock cylinder, but it's not always required. If you need to remove it, you'll need a steering wheel puller and likely a special tool to compress the steering wheel shaft.
3. Remove the lower steering column shroud: This exposes the ignition switch mechanism. This usually involves removing screws and possibly some plastic clips.
4. Remove the ignition lock cylinder: This is the most delicate part. You'll need to carefully work with the retaining clip or screws that hold the cylinder in place. The process often involves using your key to rotate the cylinder to a specific position before it can be removed. Pay close attention to the orientation of parts as you remove them.
5. Install the new ignition lock cylinder: Carefully install the new cylinder, ensuring it's correctly aligned and seated. Secure it with the retaining clips or screws.
6. Reassemble everything: Carefully reverse the disassembly process, reattaching the lower steering column shroud, and the steering wheel (if removed).
7. Reconnect the battery: Test your new ignition cylinder.
Important Considerations:
* Matching the key: The new ignition lock cylinder needs to match your existing key, or you'll need a new key cut to match the new cylinder. A locksmith can help if you need new keys.
* Anti-theft systems: If your truck has an anti-theft system (like PATS – Passive Anti-Theft System), replacing the ignition switch will likely require reprogramming of the system. This often needs specialized tools and knowledge.
* Professional help: If you're uncomfortable with any of these steps, it's strongly recommended that you take your truck to a qualified mechanic or locksmith. This job can be tricky, and mistakes can lead to significant damage or expense.
Remember, this is a general overview. Always consult a repair manual specific to your 1986 Chevy Silverado for precise instructions and diagrams. Safety is paramount – take your time, be methodical, and if you're unsure, seek professional assistance.
