However, if you're determined to do it yourself, here's a general overview. Remember, this is a general guide and the specifics might vary slightly depending on your van's exact configuration. Always consult a repair manual specific to your 1995 Chevrolet G20 van for detailed instructions and diagrams:
Tools You'll Likely Need:
* Socket set: Various sizes, including the correct size for the steering column bolts.
* Screwdrivers: Phillips and flathead, likely.
* Pliers: Needle-nose pliers may be helpful.
* Wrench: Possibly needed for some fasteners.
* Electrical tape: To secure wires.
* New ignition switch: Make sure you get the correct part number for your specific vehicle.
* Repair manual: Essential for detailed diagrams and instructions.
General Steps (Consult your repair manual for precise details):
1. Disconnect the battery: This is crucial to prevent electrical shock and short circuits. Disconnect the negative (-) terminal first.
2. Remove the steering column shroud: This plastic cover usually requires removing screws or clips. This will expose the ignition switch.
3. Remove the steering column lock: This mechanism prevents the steering wheel from turning while the ignition is off. You'll likely need to manipulate the steering wheel and possibly use a tool to disengage the lock. This step is critical and requires careful attention. Consult your repair manual as improper handling can damage the steering column mechanism.
4. Remove the ignition switch: This involves removing screws or bolts that secure the switch to the steering column. The switch itself might be held in place by a retaining clip or collar. You'll likely need to carefully maneuver it free. Take photos or make detailed notes of the wiring connections before disconnecting anything.
5. Disconnect the wiring harness: Carefully unplug the connectors from the old ignition switch. Note the location and color of each wire. Take photos or use a diagram to ensure you reconnect them correctly.
6. Install the new ignition switch: Carefully insert the new ignition switch into place, making sure it's properly seated. Secure it with the screws or bolts.
7. Reconnect the wiring harness: Reconnect the wiring harness connectors, matching the wires to their correct locations based on your notes or photos.
8. Reinstall the steering column lock: Ensure the steering column lock is properly reinstalled and functions correctly.
9. Reinstall the steering column shroud: Securely reattach the shroud.
10. Reconnect the battery: Reconnect the positive (+) terminal.
11. Test the ignition switch: Turn the ignition key to check the operation of the starter, lights, and other electrical systems.
Important Considerations:
* Steering Wheel Lock: Pay close attention to the steering wheel lock mechanism. Incorrect reassembly can render it inoperable.
* Wiring: Precisely document the wiring connections. Incorrect reconnection can lead to electrical problems or damage to your vehicle.
* Security: Your vehicle's security system might be affected. If you have an aftermarket alarm or immobilizer, you might need to reprogram it after installing the new switch.
Again, this is a general overview. A repair manual specific to your 1995 Chevrolet G20 van is absolutely essential. It will provide detailed, illustrated instructions that are far more reliable than a general description. If you have any doubts about your ability to perform this repair, seek professional help. The cost of a professional repair is far less than the potential cost of damaging your vehicle.
