GM Service Manual Online
For 1990-2009 cars only

Adjust the outside rearview mirrors to see a little of the side of your vehicle, and the area beside your vehicle.

Manually fold the mirrors inward to prevent damage when going through an automatic car wash. To fold, push the mirror toward the vehicle. To return the mirror to its original position, push outward. Be sure to return both mirrors to their original unfolded position before driving.