1. Gather Your Tools:
* New mirror: Make sure you get the correct replacement mirror for your 1991 Chevy Astro van. Check the part number on the old mirror or consult a parts store with your vehicle's information.
* Flathead screwdriver (small and medium size): You might need both sizes depending on the stubbornness of the clips.
* Phillips head screwdriver (optional): Some Astro vans might have a screw securing the mirror housing.
* Cloth or towel: To protect the door panel from scratches.
2. Remove the Old Mirror:
* Locate the retaining clips: The mirror is usually held in place by clips on the back of the mirror housing. These clips are typically plastic and can be fragile.
* Carefully pry the mirror away: Using the flathead screwdriver, gently pry around the edges of the mirror housing. Work your way around the perimeter, carefully applying pressure to release the clips. Don't force it! If you feel excessive resistance, re-evaluate your approach as you may be prying in the wrong location or damaging the housing.
* Disconnect the mirror: Once the clips are released, the mirror should pull away from the door. There might be a small electrical connector if your mirror has power features (though unlikely on a base model 1991 Astro van with manual mirrors). If there is one, carefully disconnect it.
3. Install the New Mirror:
* Align the new mirror: Carefully align the new mirror with the mounting holes on the door.
* Push the mirror into place: Firmly push the new mirror until all the retaining clips snap securely into place. You should feel resistance as each clip locks.
* Reconnect the mirror (if applicable): If your new mirror has an electrical connector, connect it to the corresponding connector on the door.
4. Test the New Mirror:
* Check for proper functionality: Adjust the new mirror to ensure it moves freely and is properly positioned.
Important Considerations:
* Fragile Clips: Be extra cautious when prying the old mirror off. Broken clips make reinstallation difficult, potentially requiring replacement clips or adhesive.
* Door Panel Removal (Unlikely but Possible): In very rare cases, the mirror might be secured in a way that requires partial or complete removal of the door panel. If you encounter significant resistance or can't release the mirror with the above steps, it's best to consult a repair manual specific to your 1991 Chevy Astro van. Such manuals usually offer detailed diagrams and instructions.
* Different Mirror Types: There might be slight variations in the mounting system depending on the specific trim level of your Astro van. Observe the old mirror closely before attempting to remove it.
If you're unsure about any step, it's always best to consult a repair manual or seek professional assistance. A professional mechanic can quickly and efficiently replace the mirror and avoid potential damage.
