GMC Acadia Owner's Manual page 247

The cruise control light on the
instrument cluster comes on after
the cruise control has been set to
the desired speed.
1. Press to turn the cruise
control system on.
2. Get up to the speed desired.
3. Press and release the SET
button on the steering wheel.
4. Remove foot from the
accelerator.
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 speed is 40 km/h
(25 mph) or greater, press the +RES
button on the steering wheel. The
vehicle returns to the previously set
speed.
Increasing Speed While Using
Cruise Control
If the cruise control system is
already activated:
Press and hold the +RES button
on the steering wheel until the
desired speed is reached, then
release it.
To increase vehicle speed in
small increments, press the
+RES button briefly. 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:
Press and hold the SET button
on the steering wheel until the
lower speed desired is reached,
then release it.
Driving and Operating
To slow down in small
increments, press the SET
button 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
previously set cruise speed. While
pressing the accelerator pedal or
shortly following the release to
override cruise control, briefly
pressing the SET button will result
in cruise control set to the current
vehicle speed.
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