GM Service Manual Online
For 1990-2009 cars only

Your vehicle has an automatic light sensor on the top left corner of the instrument panel, so be sure it is not covered or the headlamps will be on continuously.

When it is dark enough outside, the automatic headlamp system will turn on the low-beam headlamps at the normal brightness along with other lamps such as the taillamps, sidemarker, parking lamps and instrument panel lights. This is indicated by the headlamp symbol on your instrument panel cluster. See Instrument Panel Cluster .

If you are driving through a parking garage, overcast weather, or a tunnel, the automatic headlamp system may turn on the low-beam headlamps at a normal brightness along with the taillamps, sidemarker, parking lamps and the instrument panel lights. The radio lights will be dimmer, and the instrument panel cluster lights may dim. There will be a delay before the lights will turn on when starting the car at night.