Adaptive Cruise Control; Series) - GMC SIERRA 2020 Owner's Manual

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)
0 237, Automatic Transmission
0 221, and Tow/Haul Mode 0 227.
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
or the ignition is turned off.

Adaptive Cruise Control

(1500 Series)

If equipped, Adaptive Cruise Control
(ACC) allows the cruise control set
speed and following gap to be
selected. Read this entire section
before using this system. The
following gap is the following time
between your vehicle and a vehicle
detected directly ahead in your path,
moving in the same direction. If no
vehicle is detected in your path,
ACC works like regular cruise
control. ACC uses a windshield
mounted front camera sensor.
If a vehicle is detected in your path,
ACC can apply acceleration or
limited, moderate braking to
maintain the selected following gap.
To disengage ACC, apply the brake.
If ACC is controlling the vehicle
speed when the Traction Control
System (TCS) or StabiliTrak/
Electronic Stability Control (ESC)
is pressed
system activates, ACC may
automatically disengage. See
Traction Control/Electronic Stability
Control 0 235. When road
conditions allow ACC to be safely
Driving and Operating
used, ACC can be turned back on.
Disabling the TCS or StabiliTrak/
ESC system will disengage and
prevent engagement of ACC.
ACC can reduce the need for you to
frequently brake and accelerate,
especially when used on
expressways, freeways, and
interstate highways. When used on
other roads, you may need to take
over the control of braking or
acceleration more often.
Warning
ACC has limited braking ability
and may not have time to slow
the vehicle down enough to avoid
a collision with another vehicle
you are following. This can occur
when vehicles suddenly slow or
stop ahead, or enter your lane.
Also see Alerting the Driver later
in this section. Complete attention
is always required while driving
and you should be ready to take
action and apply the brakes. See
Defensive Driving 0 187.
245