Four-Wheel-Drive Light; Tow/Haul Mode Light - GMC 2011 Sierra Owner's Manual

If the regular brake system warning
light is not on, the vehicle still has
brakes, but not antilock brakes.
If the regular brake system warning
light is also on, the vehicle does not
have antilock brakes and there is
a problem with the regular brakes.
See
.
For vehicles with a Driver
Information Center (DIC), see
all brake related DIC messages.
For vehicles with a Hybrid, see
the Hybrid Supplement for more
information.

Four-Wheel-Drive Light

The four-wheel-drive light
comes on when a vehicle with
a manual transfer case is shifted
for
into four-wheel drive and the front
axle engages.
Some delay between the shifting
and the light coming on is normal.
See
for more information.
Instruments and Controls

Tow/Haul Mode Light

For vehicles with the Tow/Haul
Mode feature, this light comes on
when the Tow/Haul Mode has been
activated.
For more information, see
5-29
.