GMC 2010 Yukon/Yukon XL Owner's Manual page 267

The light goes out when the fog lamps are turned off.
See Fog Lamps on page 4 13 for more information.
The light goes out when the cruise control is turned off.
See Cruise Control on page 4 7 for more information.
The fog lamp light comes
on when the fog lamps
are in use.
The cruise control light
comes on whenever the
cruise control is set.
See Headlamp High/Low-Beam Changer on page 4 5
for more information.
For more information, see Tow/Haul Mode on
page 3 39.
This light comes on when
the high-beam headlamps
are in use.
For vehicles with the tow/
haul mode feature, this
light comes on when the
Tow/Haul mode has been
activated.
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