Electronic Transfer Case; Shifting In Or Out Of Neutral - GMC 2014 Sierra Owner's Manual

Shifting into Four-Wheel Drive
Low with the vehicle at a stop
may be more difficult. You may
be unable to complete the shift
to Four-Wheel Drive Low, and
the transfer case will end up in
N (Neutral). This is normal, and
is a function of the gear teeth
aligning in the transfer case.
When this happens, make sure
the engine is on, shift the
transmission momentarily to
D (Drive) and back to
N (Neutral), and then complete
the transfer case shift.
When Four-Wheel Drive Low is
engaged, vehicle speed should
be kept below 72 km/h (45 mph).
Extended high-speed operation
in Four-Wheel Drive Low may
damage or shorten the life of the
drivetrain.
1. With the vehicle running and the
engine at an idle, set the parking
brake.
2. Place the transmission into
N (Neutral).
Shift the transfer case in one
continuous motion into or out of the
N (Neutral) position.
The transfer case knob is next to
the steering column.
Use the dial to shift into and out of
four-wheel drive.