1997 GMC Sonoma Owner's Manual - Page 93

Fog Lamps (If Equipped) The fog lamp switch is on the instrument panel under the lamp switches. Press the side of the switch with the fog lamp symbol to turn the fog lamps on. Press OFF to turn them off. A light will glow in the switch when the fog lamps are on. Remember, fog lamps alone will not give off as much light as your headlamps. Never use your fog lamps in the dark without turning on your headlamps. Fog lamps will go off whenever your high-beam headlamps come on. When the high-beam headlamps go off, the fog lamps will come on again. I Interior Lamps Brightness Control Turn the switch next to the headlamp switch up to make your instrument panel and transfer case lights brighter. Turn the switch all the way up to turn on the interior lamps. Use your fog lamps for better vision i n foggy or misty conditions. Your parking lamps or low-beam headlamps must be o n for your fog lamps to work. 2-45