Hummer H2 2010 Owner's Manual page 25

Transfer Case Buttons
Full-Time Four-Wheel Drive sends engine power to all
four wheels for extra traction.
4 (Full-Time Four Wheel Drive): For driving in most
street and highway situations.
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.
4 (Four-Wheel-High Lock): When extra traction is
needed in most off-road situations.
4 (Four-Wheel-Low Lock): Delivers extra torque to
all four wheels. Used for extreme off-road conditions.
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 5 9.
N (Neutral): Shift the transfer case to N (Neutral) only
when towing the vehicle. See Recreational Vehicle
Towing on page 5 46 Recreational Vehicle Towing or
Towing Your Vehicle on page 5 46 Towing Your Vehicle
for more information.
See Full-Time Four-Wheel Drive on page 3 37.
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