Transmission; Four-Wheel Drive - GMC 2012 Sierra Denali Owner's Manual

See Dual Automatic Climate Control
System on page 8 1.

Transmission

Range Selection Mode
The Range Selection Mode button
is located on the shift lever.
To enable Range Selection:
1. Move the column shift lever to
the M (Manual) position. The
current range will appear next to
the M. This is the highest
possible range with all lower
gears accessible. As an
example, when 5 (Fifth) gear is
selected, 1 (First) through
5 (Fifth) gears are available.
2. Press the plus/minus buttons to
select the range of gears for
current driving conditions. See
Manual Mode on page 9 37.
While using Range Selection Mode,
cruise control and the Tow/Haul
mode can be used.
Grade Braking is not available when
Range Selection Mode is active.
See Tow/Haul Mode on page 9 38.

Four-Wheel Drive

If the vehicle has Four-Wheel Drive,
you can send the engine's driving
power to all four wheels for extra
traction.
In Brief
Electronic Transfer Case
The transfer case knob is located
next to the steering column.
You can choose among four driving
settings:
2 (Two-Wheel Drive High): This
setting is used for driving in most
street and highway situations.
4 (Four-Wheel Drive High): Use
the Four-Wheel Drive High position
when extra traction is needed, such
as on snowy or icy roads or in most
off-road situations.
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