GMC 2015 Sierra Denali Owner's Manual page 232

(On/Off): Press to turn the
system on or off. A white indicator
comes on in the instrument cluster
when cruise control is on and turns
off when cruise control is off.
+RES (Resume/Accelerate): If
there is a set speed in memory,
press briefly to resume to that
speed or press and hold to
accelerate. If cruise control is
already active, use to increase
vehicle speed.
SET (Set/Coast): Press briefly to
set the speed and activate cruise
control. If cruise control is already
active, use to decrease vehicle
speed.
(Cancel): Press to disengage
cruise control without erasing the
set speed from memory.
Setting Cruise Control
If is on when not in use, SET or
+RES could get pressed and go into
cruise when not desired. Keep
off when cruise is not being used.
1. Press to turn the cruise
system on.
2. Get up to the desired speed.
3. Press and release SET .
4. Remove foot from the
accelerator.
The cruise control indicator on the
instrument cluster turns green after
cruise control has been set to the
desired speed. SeeInstrument
Cluster on page 5-9.
Driving and Operating
Resuming a Set Speed
If the cruise control is set at a
desired speed and then the brakes
are applied or is pressed, the
cruise control is disengaged without
erasing the set speed from memory.
Once the vehicle speed reaches
about 40 km/h (25 mph) or more,
press the +RES button briefly. The
vehicle returns to the previous set
speed.
Increasing Speed While Using
Cruise Control
If the cruise control system is
already activated:
Press and hold the +RES button
until the desired speed is
reached, then release it.
To increase vehicle speed in
small increments, briefly press
the +RES button. For each
press, the vehicle goes about
1.6 km/h (1 mph) faster.
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