GMC Sierra Denali 1500 2023 Owner's Manual page 235

234 Driving and Operating
Automatic Transfer Case
Two-Speed Transfer Case
Work Truck
Uplevel Shown, Base Level and Denali Similar
If equipped, the transfer case controls are
used to shift into and out of four-wheel
drive.
To shift the transfer case, press the desired
button. The graphic in the instrument
cluster will flash while a shift is in progress.
The graphic displayed will change to indicate
the setting requested.
When the shift is complete the graphic will
stop flashing. The Driver Information Center
(DIC) message turns off once the shift is
complete. If the transfer case cannot
complete a shift request, it will go back to
its last chosen setting.
The settings are:
N (Neutral) : Use only when the vehicle
needs to be towed. See Recreational Vehicle
Towing 0 404 or
Transporting a Disabled Vehicle 0 403.
2 (Two-Wheel Drive High) : Use for driving
on most streets and highways. The front
axle is not engaged. This setting provides
the best fuel economy.
AUTO (Automatic Four-Wheel Drive) : Use
when road surface conditions are variable.
When driving in AUTO, the front axle is
engaged, and the vehicle's power is sent to
the front and rear wheels automatically
based on driving conditions. This setting
provides slightly lower fuel economy
than 2 .
4 (Four-Wheel Drive High) : Use this
setting when extra traction is needed, such
as when driving on snowy or icy roads,
when off-roading, or when plowing snow.
4 (Four-Wheel Drive Low) : This setting
engages the front axle and delivers extra
torque. Choose 4 when driving off-road in
deep sand, deep mud, or deep snow, and
while climbing or descending steep hills.
While driving in 4 , keep vehicle speed
below 72 km/h (45 mph).
Shifting into 4 will turn Traction Control
and StabiliTrak/ESC off. See Traction Control/
Electronic Stability Control 0 240.
Shifts between 2 , 4 , and AUTO
Any of these shifts can be made at normal
driving speed.
The actual 4x4 shift request is only made
after the button is released. The 4x4 graphic
will remain flashing until the shift request