GM Service Manual Online
For 1990-2009 cars only

For vehicles with fog lamps, the button is located on the instrument panel above the radio.

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

The parking lamps or low-beam headlamps must be on to use the fog lamps.

Press to turn the fog lamps on or off. The fog lamp button is lit when the lamps are on. The fog lamps will go off whenever the high-beam headlamps are turned on. When the high-beam headlamps are turned off, the fog lamps will come on again.

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