Tools You'll Likely Need:
* Flat-head screwdriver: For prying trim pieces.
* Phillips head screwdriver: Possibly needed depending on the switch mounting.
* Panel removal tools: These plastic tools help prevent scratching the trim.
* New power window switch: Make sure you get the correct one for your year and model Lumina. The part number is crucial.
* Electrical contact cleaner (optional): To clean the contacts before installing the new switch.
Steps (General):
1. Remove the Door Panel: This is the most involved step. The exact procedure varies slightly by year and trim level, but generally involves:
* Removing the interior door handle: This usually involves removing a screw or two then carefully prying it loose.
* Removing the armrest: Typically involves some screws or clips.
* Removing the door panel screws: These are usually located around the edges of the panel.
* Carefully prying the door panel away: Start at the bottom and work your way up, using panel removal tools to avoid damage. There are usually clips holding the panel in place. Be gentle to avoid breaking the clips. You may need to disconnect the power window switch connector and any other connectors attached (like the courtesy light).
2. Disconnect the Old Switch: Once the door panel is off, you'll see the power window switch. There will be a connector plugged into the back of it. Carefully unplug this connector. Take a picture of the connector orientation for easy reassembly.
3. Remove the Old Switch: The switch may be held in place with screws, clips, or a combination of both. Remove the fasteners carefully.
4. Clean the Contacts (Optional): Use an electrical contact cleaner to clean the contacts on both the switch harness and the new switch. This can help ensure a good connection.
5. Install the New Switch: Carefully install the new switch, making sure it's securely fastened in the same way the old one was.
6. Reconnect the Connector: Connect the switch connector to the new switch, ensuring it's securely seated.
7. Reassemble the Door Panel: Carefully reassemble the door panel, making sure all clips and screws are properly secured.
8. Reconnect the Battery: Reconnect the negative battery cable.
9. Test the Window: Test the new window switch to make sure it's working correctly.
Important Considerations:
* Consult a Repair Manual: A repair manual specific to your 1999 Chevy Lumina will provide detailed instructions and diagrams. This is highly recommended.
* Take Pictures: Take plenty of pictures as you disassemble the door panel. This will be invaluable during reassembly.
* Be Gentle: Be careful not to break any clips or damage the door panel while removing and reinstalling it.
* If Unsure, Seek Professional Help: If you're uncomfortable with any of these steps, it's best to take your Lumina to a qualified mechanic.
This is a general guide. The exact steps may vary slightly depending on the specific model and trim level of your 1999 Chevy Lumina. Always refer to a repair manual for your vehicle for the most accurate instructions.
