GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
246
Driving and Operating
{
Warning
ACC will not detect or brake for
children, pedestrians, animals,
or other objects.
Do not use ACC when:
.
On winding and hilly roads
or when the camera sensor
is blocked by snow, ice,
or dirt. The system may not
detect a vehicle ahead.
Keep the windshield and
headlamps clean.
.
When visibility is poor due
to rain, snow, fog, dirt,
insect residue, or dust;
when other foreign objects
obscure the camera
’
s view;
or when the vehicle in front
or oncoming traffic causes
additional environmental
obstructions, such as road
spray. ACC performance is
limited under these
conditions.
(Continued)
Warning (Continued)
.
On slippery roads where
fast changes in tire traction
can cause excessive
wheel slip
.
With extremely heavy cargo
loaded in the cargo area or
rear seat
.
When towing a trailer
J
:
Press to turn the system on or
off. The indicator turns white on the
instrument cluster when ACC is
turned on.
RES+ :
Press briefly to resume the
previous set speed or to increase
vehicle speed if ACC is already
activated. To increase speed by
about 1 km/h (1 mph), press RES+
briefly. To increase speed to the
next 5 km/h (5 mph) mark on the
speedometer, hold RES+.
SET
–
:
Press briefly to set the
speed and activate ACC or to
decrease vehicle speed if ACC is
already activated. To decrease
speed by about 1 km/h (1 mph),
press SET
–
briefly. To decrease
speed to the next 5 km/h (5 mph)
mark on the speedometer,
hold SET
–
.
*
:
Press to disengage ACC
without erasing the selected set
speed.
[
:
Press to select a following gap
setting for ACC of Far, Medium,
or Near.