1. Safety First:
* Park on a level surface: Engage your parking brake.
* Disconnect the battery: This prevents accidental short circuits. Disconnect the negative (-) terminal first.
2. Access the Mirror:
* Locate the mounting points: The mirror is usually attached to the door with a few screws or clips, and possibly a connector for power and heating elements. Examine the mirror housing carefully to identify these. You might need to remove a small trim piece around the mirror base first.
* Remove any trim pieces: Gently pry off any plastic trim pieces around the mirror base using a plastic trim tool to avoid scratching the paint. These are usually held in place with clips. Work slowly and carefully.
3. Disconnect the Mirror:
* Electrical Connector: Carefully disconnect the electrical connector for the mirror's power and heating functions (if equipped). There's usually a small latch or tab to release it. Take a photo beforehand so you remember how it goes back together.
* Bolts or Clips: Remove the bolts or clips holding the mirror assembly to the door. This might involve accessing the inside of the door – consult your repair manual for precise locations.
4. Remove the Old Mirror:
* Gently pull the mirror: Once all the fasteners are removed, gently pull the mirror away from the door. It might be slightly snug, so use a little force but avoid applying too much pressure in one spot to prevent breakage.
5. Install the New Mirror:
* Reverse the removal process: Install the new mirror by carefully aligning it with the mounting points. Secure it with the bolts or clips.
* Reconnect the electrical connector: Connect the electrical connector, ensuring it's firmly seated.
* Reattach the trim pieces: Carefully snap the trim pieces back into place.
6. Reconnect the Battery:
* Reconnect the battery's positive (+) terminal.
Important Considerations:
* Repair Manual: A repair manual specific to your 1999 Chevy Tahoe is highly recommended. It will provide detailed diagrams and instructions, making the process much easier and reducing the risk of damage.
* Type of Mirror: The complexity of the process depends on the type of mirror you have (power, heated, etc.). A power-folding mirror will have additional wiring and mechanisms.
* Parts: Ensure you purchase the correct replacement mirror for your 1999 Chevy Tahoe. The part number should be readily available from your local auto parts store or online.
* Patience: Take your time and work carefully. Rushing can lead to damage or frustration.
If you are uncomfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. They have the experience and tools to complete the job safely and efficiently.