GM Service Manual Online
For 1990-2009 cars only

Use the fog lamps for better vision in foggy or misty conditions.

The fog lamps button is located on the exterior lamps control to the left of the steering column.

(Fog Lamps): Press the exterior lamps button to turn the fog lamps on or off. A light comes on in the instrument panel cluster when the fog lamps are in use. The ignition must be on for the fog lamps to work.

When the headlamps are changed to high-beam, the fog lamps will turn off. The fog lamps come back on again when the high-beam headlamps are turned off.

Some localities have laws that require the headlamps to be on along with the fog lamps.