Driver Assistance Systems - GMC Sierra 2500 HD2022 Owner's Manual

252 Driving and Operating
the release to override cruise control, briefly
pressing SET will result in cruise control set
to the current vehicle speed.
Using Cruise Control on Hills
How well the cruise control works on hills
depends on the vehicle speed, the load, and
the steepness of the hills. When going up
steep hills, pressing the accelerator pedal
may be necessary to maintain vehicle speed.
While going downhill, cruise braking helps
maintain driver selected speed.
Cruise Grade Braking is enabled when the
vehicle is started and cruise control is active.
It is not enabled in Range Selection Mode.
It assists in maintaining driver selected
speed when driving on downhill grades by
using the engine and transmission to slow
the vehicle.
For other forms of descent control, see Hill
Descent Control (HDC) 0 248, Automatic
Transmission 0 235, and Tow/Haul Mode
0 240.
Ending Cruise Control
There are four ways to end cruise control:
Step lightly on the brake pedal.
Press .
Shift the transmission to N (Neutral).
To turn off cruise control, press
Erasing Speed Memory
The cruise control set speed is erased from
memory if
is pressed or the ignition is
turned off.

Driver Assistance Systems

This vehicle may have features that work
together to help avoid crashes or reduce
crash damage while driving, backing, and
parking. Read this entire section before
using these systems.
Warning
Do not rely on the Driver Assistance
Systems. These systems do not replace
the need for paying attention and driving
safely. You may not hear or feel alerts or
warnings provided by these systems.
Failure to use proper care when driving
may result in injury, death, or vehicle
damage. See Defensive Driving 0 211.
Warning (Continued)
.
Under many conditions, these systems
will not:
Detect children, pedestrians, bicyclists,
or animals.
Detect vehicles or objects outside the
area monitored by the system.
Work at all driving speeds.
Warn you or provide you with enough
time to avoid a crash.
Work under poor visibility or bad
weather conditions.
Work if the detection sensor is not
cleaned or is covered by ice, snow,
mud, or dirt.
Work if the detection sensor is
covered up, such as with a sticker,
magnet, or metal plate.
Work if the area surrounding the
detection sensor is damaged or not
properly repaired.
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