Hummer 2009 H2 - Manual (Page 124)

Transfer Case Dial
The transfer case dial is
located to the right of the
instrument panel cluster.
Use this switch to shift into
and out of the different
Full-Time Four-Wheel
Drive modes.
The transfer case is a part of the Full-Time Four-Wheel
Drive system and allows the following four different
modes of operation:
4 m (Full-Time Four-Wheel Drive): This setting is
used for driving in most street and highway situations.
It can be used for light or variable off-road conditions.
4 m Q (Four-Wheel-High Lock): Use this mode
when you need extra traction in most off-road situations
such as sand, mud, snow, or level, rocky trails.
4 n Q (Four-Wheel-Low Lock): This mode delivers
extra torque to all four wheels and is used for extreme
off-road conditions. Choose Four-Wheel-Low Lock
while driving off-road in deep sand, mud, or snow and
climbing or descending steep hills.
When in this mode you can also choose to lock the rear
axle for additional traction in extreme off-road situations.
See Locking Rear Axle on page 4-10.
Notice: Operating the vehicle in
Four-Wheel-Low Lock above 50 mph (80 km/h)
for any extended period of time could cause damage
to the transfer case. Do not operate the vehicle in
Four-Wheel-Low Lock above 50 mph (80 km/h) for
extended periods.
{ CAUTION:
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 2-42.
2-38