GMC Sierra 2500 HD 2023 Owner's Manual page 246

: Press to turn cruise control on or off.
A white indicator comes on or off in the
instrument cluster.
+RES : If there is a set speed in memory,
press the control up briefly to resume to
that speed or press and hold to accelerate.
If cruise control is already engaged, use to
increase vehicle speed.
SET : Press the control down briefly to set
the speed and activate cruise control.
If cruise control is already engaged, use to
decrease vehicle speed.
: 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 your foot from the accelerator.
The cruise control indicator on the
instrument cluster turns green after cruise
control has been set to the desired speed.
See Instrument Cluster 0 111.
Resuming a Set Speed
If the cruise control is set at a desired speed
and then the brakes are applied or
pressed, the cruise control is disengaged
without erasing the set speed from memory.
Once the vehicle reaches about 40 km/h
(25 mph) or more, press RES+ up briefly. The
vehicle returns to the previously set speed.
Increasing Speed While Using Cruise Control
Do one of the following:
Press and hold +RES up until the desired
speed is reached, then release it.
Driving and Operating
To increase vehicle speed in small
increments, press +RES up briefly. For
each press, the vehicle goes about 1 km/h
(1 mph) faster.
The speedometer reading can be displayed
in either English or metric units. See
Instrument Cluster 0 111. The increment
value used depends on the units displayed.
Reducing Speed While Using Cruise Control
Do one of the following:
Press and hold SET down until the
desired lower speed is reached, then
release it.
To slow down in small increments, press
SET down briefly. For each press, the
vehicle goes about 1 km/h (1 mph) slower.
The speedometer reading can be displayed
is
in either English or metric units. See
Instrument Cluster 0 111. The increment
value used depends on the units displayed.
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
245