GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18552429) - 2025
174 Driving and Operating
Electronic Range Select (ERS), or Manual Mode,
allows for the selection of the range of gear
positions. Use this mode when driving downhill
or towing atrailer to limit the top gear and
vehicle speed. The shift position indicator
within the Driver Information Center (DIC) will
display anumber next to the Lindicating the
highest available gear.
To enter ERS or Manual Mode:
1. With the vehicle in D (Drive), press L (Low)
button on steering wheel. The Lin the shift
pattern will illuminate in red, and the D will
switch to white.
2. Tap the left steering wheel control to
re
duce the highest gear available, or
the right control to increase the highest
gear available.
3. To exit L (Low) and shift into D (Drive), shift
to D (Drive) or press L (Low) button. The D in
the shift pattern will illuminate in red, and
the Lwill switch to white.
When shifting to L (Low), the transmission will
shift to apreset lower gear range. For this
preset range, the highest gear available will
be displayed next to the Lin the DIC. See
Driver Information Center (DIC) 3 102. All gears
below that number are available to use. For
example, when 4 (Fourth) is shown next to the
L, 1 (First) through 4 (Fourth) gears are shifted
automatically. To shift to 5 (Fifth) gear, tap
the right steering wheel control or shift into
D (Drive).
L (Low) will prevent shifting to alower gear
range if the engine speed is too high. If the
vehicle speed is not reduced within the time
allowed, the lower gear range shift will not
be completed. Slow the vehicle, then tap the
left steering wheel control to the desired lower
gear range.
Cruise control can be used while in ERS.
Drive Systems
Al
l-Wheel Drive
Vehicles with this feature can operate in All-
Wheel Drive (AWD) Mode.
Press the switch to select AWD.
See Driver Mode Control 3179.
When operated in two-wheel drive, the vehicle
will deliver power to the front wheels only and
may provide better fuel economy.
When using acompact spare tire on an AWD
vehicle, the system automatically detects the
compact spare and reduces AWD performance
to protect the system. To restore full AWD
operation and prevent excessive wear on the