GMC Cadillac XT4 2019 Owner's Manual page 206

Warning (Continued)
Do not use ACC when:
On winding and hilly roads or
when the sensors are blocked
by snow, ice, or dirt. The
system may not detect a
vehicle ahead. Keep the entire
front of the vehicle clean.
Visibility is low, such as in
fog, rain, or snow conditions.
ACC performance is limited
under these conditions.
On slippery roads where fast
changes in tire traction can
cause excessive wheel slip.
: Press to turn the system on or
off. The indicator turns white on the
instrument cluster when ACC is
turned on.
RES+ : Move the thumbwheel up
briefly toward RES+ to resume the
previous set speed or to increase
vehicle speed if ACC is already
activated. To increase speed by 1 km/h
(1 mph), move the thumbwheel up to
the first detent toward RES+. To
increase speed to the next 5 km/h
(5 mph) mark on the speedometer,
move the thumbwheel up to the
second detent.
DRIVING AND OPERATING
SET : Move the thumbwheel down
toward SET briefly to set the speed
and activate ACC or to decrease
vehicle speed if ACC is already
activated. To decrease speed by
1 km/h (1 mph), move the
thumbwheel down toward SET to the
first detent. To decrease speed to the
next 5 km/h (5 mph) mark on the
speedometer, move the thumbwheel
down to the second detent.
: Press to disengage ACC without
erasing the selected set speed.
: Press to select a following gap
time (or distance) setting for ACC of
Far, Medium, or Near.
Switching Between ACC and
Regular Cruise Control
To switch between ACC and regular
cruise control, press and hold
A Driver Information Display (DIC)
message displays. See Vehicle Messages
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