GM Service Manual Online
For 1990-2009 cars only

For vehicles with fog lamps, the button is located on the instrument panel, to the left of the steering wheel.

The ignition and headlamps or parking lamps must be on to use the fog lamps. The fog lamps will not turn on if the high beam headlamps or flash to pass are active.

Press to turn the fog lamps on or off. An indicator light on the instrument panel cluster comes on when the fog lamps are on.

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