GM Service Manual Online
For 1990-2009 cars only

Object Number: 809522  Size: B2

Your vehicle may have an automatic dimming rearview mirror. Push the button in the center of the mirror to turn this feature on. The mirror will darken gradually to reduce glare from headlamps behind you.

To turn the automatic dimming feature off, press the button in the center of the mirror again.

The mirror's two outer buttons operate the lamps on the bottom of the mirror.

One photocell on the front of the mirror senses when it is becoming dark outside. Another photocell, facing rearward, senses headlamps behind you.

To keep the photocells operating well, occasionally clean them with a cotton swab and glass cleaner.