GM Service Manual Online
For 1990-2009 cars only

For vehicles with fog lamps, the button is located on the instrument panel next to the exterior lamps switch.

Press to turn the fog lamps on or off.

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

The parking lamps or low-beam headlamps must be on, before the fog lamps can be turned on.

If the exterior lamp control is set to AUTO mode, the parking lamps and low-beam headlamps come on simultaneously when the fog lamps are turned 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.