Hill Descent Control (Hdc); Driver Mode Control - GMC 2018 Terrain Owner's Manual

188 Driving and Operating
To turn StabiliTrak off, select
StabiliTrak, then press
was on when StabiliTrak was turned
off, both will turn off and
illuminate in the instrument cluster.
To turn StabiliTrak back on, select
StabiliTrak then press .
out in the instrument cluster.
To turn both StabiliTrak and TCS
back on, select Traction, then press
. and go out in the
instrument cluster.
Adding accessories can affect the
vehicle performance. See
Accessories and Modifications
0 219.
Hill Descent
Control (HDC)
HDC can be used when driving
downhill. It sets and maintains
vehicle speed while descending a
very steep incline in a forward or
reverse gear.
The HDC switch is on the center
console.
Press
. If TCS
Vehicle speed must be below
50 km/h (31 mph).
and
goes
The HDC light displays on the
instrument cluster when enabled.
HDC can maintain vehicle speeds
between 3 and 22 km/h (2 and
14 mph) on an incline greater than
or equal to a 10% grade. A blinking
HDC light indicates the system is
actively applying the brakes to
maintain vehicle speed.
When HDC is activated, the initial
HDC speed is set to the current
driving speed. It can be increased or
decreased by pressing +RES
or SET on the steering wheel or by
applying the accelerator or brake
pedal. This adjusted speed
becomes the new set speed.
to enable or disable HDC.
HDC will remain enabled between
22 and 60 km/h (14 and 37 mph);
however vehicle speed cannot be
set or maintained in this range.
It will automatically disable if the
vehicle speed is above 80 km/h
(50 mph) or above 60 km/h
(37 mph) for at least 30 seconds.
Press again to re-enable HDC.

Driver Mode Control

Driver Mode Control Knob
for FWD