Before You Begin:
* Gather your tools: You'll likely need a small Phillips head screwdriver, possibly a trim removal tool (plastic pry tool to avoid scratching), and potentially a 10mm socket (depending on the mirror mounting). Have a rag handy to clean up.
* Consult a repair manual: A Haynes or Chilton repair manual specific to your 1996 Pontiac Bonneville will provide the most accurate and detailed instructions. This is highly recommended.
* Note the mirror's position: Before removing it, pay close attention to how the mirror is adjusted. This will help you set the new one correctly. Take a picture if necessary.
Steps (General Procedure):
1. Remove the Interior Door Panel: This is usually the most difficult part. There are usually screws hidden behind the armrest, door handle, and possibly under the door pull. Carefully pry off the panel using your plastic trim tool, working your way around the edges. Be gentle to avoid breaking the clips. Refer to your repair manual for the specific location of screws and clips.
2. Locate the Mirror Mounting: Once the door panel is removed, you'll see the back of the mirror housing. Identify how the mirror is attached. It's usually held in place by either:
* Screws: These screws might be directly visible, or they could be hidden under a small cover.
* Clips: The mirror might be held on by plastic clips. These can be tricky to release. Gently pry them loose with your trim tool.
* Combination: Some mirrors use both screws and clips.
3. Disconnect Electrical Connections (if applicable): If you have a power mirror, you'll need to disconnect the electrical connector. It's usually a simple plug-in connection. Take a picture of the connection to ensure you reconnect it correctly. If it's a heated mirror, there will be additional wires.
4. Remove the Mirror: Once the screws or clips are removed, the mirror assembly should come off.
5. Install the New Mirror: Reverse the removal process to install the new mirror. Make sure the electrical connector is securely plugged in if necessary.
6. Reinstall the Door Panel: Carefully snap the door panel back into place, ensuring all the clips are securely engaged. Screw everything back in.
Important Considerations:
* Power Mirrors: Power mirrors are more complex to replace due to the wiring. If you're not comfortable working with electrical components, it's best to seek professional help.
* Heated Mirrors: Heated mirrors require careful handling of the wiring to avoid damage.
* Used vs. New: If you are buying a replacement mirror, a used one from a junkyard can be significantly cheaper but might not be in perfect condition.
Again, strongly recommend consulting a repair manual for your specific vehicle model year. The exact procedure will vary slightly depending on your Bonneville's trim level and options. The images in the repair manual will be invaluable.
