GMC Yukon 2025 - Page 210

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-17942154) - 2025
Driving and Operating 209
The settings are:
N
(Neutral): Use only when the vehicle needs
to be towed. See Recreational Vehicle Towing
3 384 or Transporting a Disabled Vehicle 3 383.
2 m (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 m.
4 m (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 n (Four-Wheel Drive Low): This setting
engages the front axle and delivers extra
torque. Choose 4 n when driving off-road in
deep sand, deep mud, or deep snow, and while
climbing or descending steep hills. While
driving in 4 n, keep vehicle speed below 72 km/
h (45 mph).
Shifting into 4 n w
ill turn Traction Control and
StabiliTrak/ESC off. See Traction Control/
Electronic Stability Control 3214.
Shifts between 2m, 4m, 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 has
completed. ADIC message displays to indicate
that the 4x4 transfer case has been requested
to shift to the new desired state.
Once the 4x4 shift has completed, the DIC
message disappears, the 4x4 graphic stops
flashing, and the current setting is indicated.
When ashift to 2 m is completed successfully
while in P (Park), the parking brake will engage.
To resume driving, shift the transmission to the
desired gear and manually release the parking
brake or press the accelerator pedal to begin
driving. See Electric Parking Brake 3212.
If equipped, use 4n, AUTO, or 4m to provide
additional traction when parking on asteep
grade with poor traction such as ice, snow,
mud, or gravel.
Shifting Into 4 n
1.
The ignition must be on and the vehicle
must be stopped or moving less than 5
km/h (3 mph) with the transmission in N
(Neutral). It is best for the vehicle to be
moving 1.6 to 3.2 km/h (1 to 2 mph).
2.
Press 4 n. The actual 4x4 shift request is
only made after the button is released. The
4x4 graphic will remain flashing until the
shift request has completed. A DIC message
displays to indicate that the 4x4 transfer
case has been requested to shift to the new
desired state.
Once the 4x4 shift has completed, the
DIC message disappears, the 4x4 graphic
stops flashing and the current setting
is indicated.
If vehicle speed is higher when shift request
occurs, aDIC message displays. Reduce
vehicle speed.
If the transmission is not in N(Neutral) when
shift request occurs, aDIC message displays.
The vehicle will allow 20 seconds for the shift
to occur. After this time, agraphic in the
instrument cluster will indicate that the
transfer case is in 4 n.