GMC 2007 Acadia - Manual (Page 186)

Fog Lamps
Use the fog lamps for better vision in foggy or
misty conditions.
- (Fog Lamps): The fog lamps button is located
on the exterior lamps control. The exterior lamps
control is located on the instrument panel to the
left of the steering column.
The ignition must be on for the fog lamps to work.
Press the exterior lamps button to turn the fog
lamps on or off. A light will come on in the
instrument panel cluster when the fog lamps
are in use.
When the headlamps are changed to high-beam,
the fog lamps will turn off. The fog lamps come
back on again when the high-beam headlamps are
turned off.
Some localities have laws that require the
headlamps to be on along with the fog lamps.
Instrument Panel Brightness
D (Instrument Panel Brightness): The knob
with this symbol on it is located next to the exterior
lamps control. Push the knob in all the way until
it pops out and then turn the knob clockwise
to brighten or counterclockwise to dim the lights.
Push the knob back in when finished.
Courtesy Lamps
When a door is opened, the courtesy lamps
automatically come on. They make it easy for you
to enter and leave your vehicle. You can also
manually turn these lamps on by fully turning the
instrument panel brightness control clockwise.
The reading lamps, located on the headliner, can
be turned on or off independent of the automatic
courtesy lamps, when the doors are closed.
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