GMC 2007 Canyon - Manual (Page 127)

Use these buttons to shift into and out of four-wheel
drive. You can choose from the following:
2
m
(Two-Wheel High): This setting is for driving
in most street and highway situations. Your front
axle is not engaged in two-wheel drive.
{ CAUTION:
Shifting the transfer case to NEUTRAL
can cause your vehicle to roll even if the
transmission is in PARK (P), or if you
have a manual transmission, even if you
are in gear. You or someone else could
be seriously injured. Be sure to set the
parking brake before placing the transfer
case in NEUTRAL. See Parking Brake
on page 130.
N (NEUTRAL): Shift the vehicle’s transfer case to
NEUTRAL only when towing your vehicle.
4 m (Four-Wheel High): This setting engages
your front axle to help drive your vehicle. Use
four-wheel high when you need extra traction, such
as on snowy or icy roads, or in most off-road
situations.
4
n
(Four-Wheel Low): This setting also
engages your front axle to give you extra traction.
It sends the maximum power to all four wheels.
You might choose four-wheel low if you were
driving off-road in sand, mud, or deep snow and
while climbing or descending steep hills.
Indicator lights in the buttons show you which
setting you are in. The indicator lights will come on
briefly when you turn on the ignition and one will
stay on the selected setting. If the lights do
not come on, you should take your vehicle in for
service. An indicator light will flash while shifting.
It will stay on when the shift is completed.
If for some reason the transfer case does not shift,
it will return to the last chosen setting.
127