GMC 2012 Terrain Owner's Manual page 256

9-42 Driving and Operating
RES/+ (Resume/Accel): Move the
thumbwheel up toward RES/+ to
make the vehicle resume to a
previously set speed or to
accelerate.
SET/ (Set/Coast): Move the
thumbwheel down toward SET/- to
set a speed and activate cruise
control, or to make the vehicle
decelerate.
Setting Cruise Control
If the cruise button is on when not in
use, it could get bumped and go into
cruise when not desired. Keep the
cruise button turned off when cruise
control is not being used.
1. Press ON/OFF CRUISE.
2. Get to the speed desired.
3. Press the thumbwheel and
release it. The desired set speed
briefly appears in the Driver
Information Center (DIC) display.
4. Take your foot off the accelerator
pedal.
Resuming a Set Speed
If the cruise control is set at a
desired speed and then the brakes
are applied, the cruise control is
disengaged without erasing the
set speed from memory.
Once the vehicle reaches about
40 km/h (25 mph) or more, move
the thumbwheel up toward RES/+
briefly. The vehicle returns to the
previous set speed and stays there.
Increasing Speed While Using
Cruise Control
If the cruise control system is
already activated,
Move the thumbwheel up
toward RES/+ and hold it
until the vehicle accelerates to
the desired speed, and then
release it.
To increase the speed in small
amounts, move the thumbwheel
up toward RES/+ briefly and
then release it. Each time this
is done, the vehicle goes about
1.6 km/h (1 mph) faster.
Reducing Speed While Using
Cruise Control
If the cruise control system is
already activated,
Move the thumbwheel toward
SET/ and hold until the desired
lower speed is reached, then
release it.
To slow down in small amounts,
move the thumbwheel toward
SET/ briefly. Each time this is
done, the vehicle goes about
1.6 km/h (1 mph) slower.
Passing Another Vehicle While
Using Cruise Control
Use the accelerator pedal to
increase the vehicle speed.
When you take your foot off the
pedal, the vehicle will slow down
to the previous set cruise speed.