GMC 2018 Terrain Owner's Manual page 190

Driver Mode Control Knob
for AWD
(Vehicles without AWD) or
(AWD equipped vehicles) Tour
Mode : Use Tour Mode during
normal driving conditions. Tour
Mode either puts the vehicle in
Front-Wheel Drive (AWD vehicles)
or is the normal drive mode (FWD
vehicles). Tour Mode is the most
fuel efficient drive mode. See
Driving for Better Fuel Economy
0 25. When selecting Tour Mode,
the AWD light will flash briefly while
the system disables, and then
stays off.
AWD Mode : In AWD Mode, the
AWD system delivers power to all
four wheels and the system adjusts
as needed to improve traction.
Selecting AWD Mode will activate
the system. The AWD light will flash
briefly while the system is engaging
and stay on to indicate AWD is
active. AWD Mode will stay selected
until the mode is changed. AWD is
active in Tow/Haul and Off-Road
Modes. AWD Mode is only available
on vehicles equipped with All-Wheel
Drive.
Tow/Haul and Off-Road Modes are
canceled with each ignition cycle
and will return to the Tour Mode.
When using a compact 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
system, replace the compact spare
tire with a full-size tire as soon as
possible. See Compact Spare Tire
0 273.
Driving and Operating
Snow Mode : Snow Mode
improves vehicle acceleration on
snow and ice-covered roads. Snow
Mode is not available on vehicles
equipped with all wheel drive.
Off-Road Mode : Use Off-Road
Mode for public off-road recreational
driving. See Off-Road Driving 0 157.
Off-Road Mode is only available on
vehicles equipped with All-Wheel
Drive.
Tow/Haul Mode : Tow/Haul
Mode can assist when towing or
hauling a heavy load. It changes
transmission shift patterns, turns on
AWD, if equipped, and increases
trailer sway control assistance.
When Tow/Haul is activated, the
Tow/Haul symbol will come on in the
instrument cluster. See Driving
Characteristics and Towing Tips
0 211. Tow/Haul Mode is only
available on vehicles with the towing
package.
Automatic Engine Grade Braking
assists when driving downhill.
It maintains vehicle speed by
automatically implementing a shift
pattern that uses the engine and the
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