The process generally involves these steps:
1. Steering Column Removal (Usually Necessary): In most cases, you won't be able to access the ignition switch fully without at least partially removing the steering column. This varies slightly depending on the exact trim level and body style of your truck. Consult a repair manual specific to your 1987 Chevy Silverado for detailed instructions on removing your steering column. This often involves removing the steering wheel, the steering column shroud, and potentially some linkage components. This is the most challenging part of the job.
2. Access the Ignition Switch: Once you have access to the back of the steering column, you'll see the ignition switch itself. It's usually held in place by screws or a retaining clip. Again, your repair manual will show you precisely where these are located.
3. Disconnect Wiring Harness: Before removing the switch, carefully disconnect the wiring harness. Take pictures or make notes of how the wires are connected to avoid confusion during reassembly. A wiring diagram from a repair manual is extremely helpful here. Label each wire carefully.
4. Remove the Ignition Switch: Once the wiring harness is disconnected, remove the screws or clip holding the ignition switch in place. Gently pull the switch out of the steering column.
5. Replace (if needed): If you're replacing the switch, install the new switch, ensuring it's securely fastened and the wiring harness is reconnected correctly.
6. Reassemble: Carefully reverse the steps to reassemble the steering column and any other components you removed. Make sure everything is securely fastened and aligned correctly.
Important Considerations:
* Repair Manual: A repair manual specific to your 1987 Chevy Silverado is essential for this job. It will provide detailed diagrams and instructions tailored to your vehicle's model. Trying this without a manual can lead to damage or improper reassembly.
* Tools: You'll need various tools, including screwdrivers (Phillips and flathead), possibly sockets and wrenches, and potentially specialized tools for removing the steering wheel and column.
* Safety: Always disconnect the battery's negative terminal before beginning any electrical work. Be careful when working around the steering column to avoid damaging any components.
This process is significantly more complicated than a simple description can convey. If you are not comfortable working on your vehicle's steering column and electrical system, it's strongly recommended that you take your truck to a qualified mechanic. Improperly installing the ignition switch could result in serious safety hazards.
