GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - crc - 5/11/17
22
In Brief
Four-Wheel Drive
If equipped with four-wheel drive,
the engine's driving power can be
sent to all four wheels for extra
traction.
Transfer Case Controls
The vehicle will have one of the
following three styles of transfer
case controls. Use these controls to
shift into and out of the different
four-wheel drive modes.
Manual Transfer Case
This transfer case shift lever is on
the floor to the right of the driver.
Electronic Transfer Case
This transfer case knob is to the left
of the steering column.
Automatic Transfer Case
This transfer case knob is to the left
of the steering column.
The different drive options that may
be available are described following.
2
m
(Two-Wheel Drive High) :
This
setting is used for driving in most
street and highway situations.
AUTO (Automatic Four-Wheel
Drive) :
This setting is ideal for use
when road surface traction
conditions are variable.
Do not use AUTO mode to park on
a steep grade with poor traction
such as ice, snow, mud or gravel. In