General Steps (Consult your repair manual for specifics):
1. Disconnect the battery negative terminal: This is the most important step to prevent electrical shocks and damage.
2. Remove the steering wheel: This usually involves removing the steering wheel shroud (plastic cover) and then using a steering wheel puller. This step is often necessary to access the ignition switch.
3. Remove the ignition switch bezel/trim: This is the plastic piece surrounding the ignition switch. It typically requires careful prying with plastic trim removal tools to avoid scratching.
4. Disconnect the wiring harness: Several connectors attach to the ignition switch. Carefully disconnect these connectors, taking note of their positions for reassembly. Some connectors may require special tools to release them.
5. Remove the retaining screws/clips: The ignition switch is held in place by screws or clips. Locate and remove these fasteners.
6. Remove the ignition switch: Once the fasteners are removed, carefully pull the ignition switch out. There may be a slight resistance.
7. Replace (if necessary): Install the new ignition switch in reverse order, ensuring all connectors are securely attached and the retaining screws are tightened.
8. Reconnect the wiring harness and the steering wheel: Reassemble all parts removed in the previous steps.
9. Reconnect the battery negative terminal: After verifying everything works correctly.
Important Considerations:
* Repair Manual: A factory service manual or a reputable repair manual specific to your 2002 Chevy Impala is highly recommended. These manuals provide detailed diagrams and instructions tailored to your vehicle's specific model.
* Tools: You'll likely need a variety of tools including screwdrivers (Phillips and possibly Torx), plastic trim removal tools, a steering wheel puller, and possibly specialized connectors.
* Safety: Always disconnect the battery negative terminal before starting any electrical work. Be cautious when working around the steering column and airbag system.
Disclaimer: This information is for general guidance only. Incorrectly performing this procedure could damage your vehicle or cause injury. If you are not comfortable performing this repair yourself, it is strongly recommended to take your vehicle to a qualified mechanic.
