GM Service Manual Online
For 1990-2009 cars only

For vehicles with this feature, it provides better visibility in foggy or misty conditions.

The fog lamp switch is located on the exterior lamps control on the instrument panel to the left of the steering column.

(Fog Lamps): To turn on the fog lamps, turn the exterior lamps control to parking lamps or headlamps and pull the fog lamps control. Push the control to turn the fog lamps off.

The fog lamp indicator in the instrument panel comes on when the fog lamps are in use.

The fog lamps control can be pulled out while the exterior lamps control is in the AUTO position. If left in this position, the fog lamps come on automatically whenever the parking lamps or low-beam headlamps turn on.

When the high-beam headlamps are turned on, the fog lamps turn off automatically. When the high-beam headlamps are turned off, the fog lamps come on again.

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