GMC 2011 Sierra - Manual (Page 177)

Black plate (29,1) GMC Sierra Owner Manual - 2011
Instruments and Controls 5-29
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 Brake System Warning Light on
page 5‑27.
For vehicles with a Driver
Information Center (DIC), see Brake
System Messages on page 5‑42 for
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
into four-wheel drive and the front
axle engages.
Some delay between the shifting
and the light coming on is normal.
See Four-Wheel Drive on page 9‑54
for more information.
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 Tow/Haul
Mode on page 9‑51.