Black plate (54,1)
GMC Sierra Owner Manual - 2011
9-54
Driving and Operating
If the vehicle has StabiliTrak
®
,
shifting into Four-Wheel Drive Low
will turn Traction Control and
StabiliTrak
®
off. See
StabiliTrak
®
System on page 9
‑
68
.
A parking brake symbol is located
next to the N (Neutral) symbol as a
reminder to set the parking brake
before shifting the transfer case into
N (Neutral).
{
WARNING
Shifting the transfer case to
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). You or someone else
could be seriously injured. Be
sure to set the parking brake
before placing the transfer case in
N (Neutral). See
Parking Brake
on page 9
‑
66
.
N (Neutral):
Shift to this setting
only when the vehicle needs to be
towed. See
Recreational Vehicle
Towing on page 10
‑
97
or
Towing the
Vehicle on page 10
‑
97
.
2
m
(Two-Wheel Drive High):
This
setting is used for driving in most
street and highway situations.
The front axle is not engaged in
two-wheel drive. This setting also
provides the best fuel economy.
4
m
(Four-Wheel Drive High):
Use
this setting when you need extra
traction, such as on snowy or icy
roads or in most off-road situations.
This setting also engages the front
axle to help drive your vehicle. This
is the best setting to use when
plowing snow.
You can shift from Two-Wheel Drive
High to Four-Wheel Drive High or
Four-Wheel Drive High to
Two-Wheel Drive High while the
vehicle is moving. In extremely cold
weather, it may be necessary to
stop or slow the vehicle to shift into
Four-Wheel Drive High.
