GMC Acadia 2022 Owner's Manual page 225

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-MidEast-
15170043) - 2022 - CRC - 5/25/21
ACC Automatically Disengages
ACC may automatically disengage and the
driver will need to manually apply the
brakes to slow the vehicle when:
The sensors are blocked.
The Traction Control System (TCS) or
StabiliTrak/ESC system has activated or
been disabled.
There is a fault in the system.
The radar may falsely report a blockage
when driving in a desert or remote area
with no other vehicles or roadside objects.
A DIC message may display to indicate
that ACC is temporarily unavailable.
The ACC indicator will turn white when ACC
is no longer active.
In some cases, when ACC is temporarily
unavailable, regular cruise control may be
used. See Switching Between ACC and
Regular Cruise Control in this section.
Always consider driving conditions before
using either cruise control system.
Notification to Resume ACC
ACC will maintain a follow gap behind a
detected vehicle and slow your vehicle to a
stop behind that vehicle.
If the stopped vehicle ahead has driven
away and ACC has not resumed, the vehicle
ahead indicator will flash as a reminder to
check traffic ahead before proceeding. In
addition, the left and right sides of the
Safety Alert Seat will pulse three times,
or three beeps will sound. See Alert Type
and Adaptive Cruise Go Notifier in
Collision/Detection Systems under Vehicle
Personalization 0 121.
When the vehicle ahead drives away, press
RES+ or the accelerator pedal to resume
cruise control. If stopped for more than
two minutes or if the driver door is opened
and the driver seat belt is unbuckled, the
ACC automatically applies the Electric
Parking Brake (EPB) to hold the vehicle. The
EPB status light will turn on. See Electric
Parking Brake 0 212. To resume ACC and
release the EPB, press the accelerator pedal.
A DIC warning message may display
indicating to shift to P (Park) before exiting
the vehicle. See Vehicle Messages 0 121.
Warning
If ACC has stopped the vehicle, and if ACC
is disengaged, turned off, or canceled, the
vehicle will no longer be held at a stop.
(Continued)
Driving and Operating
Warning (Continued)
The vehicle can move. When ACC is
holding the vehicle at a stop, always be
prepared to manually apply the brakes.
Warning
Leaving the vehicle without placing it in
P (Park) can be dangerous. Do not leave
the vehicle while it is being held at a
stop by ACC. Always place the vehicle in
P (Park) and turn off the ignition before
leaving the vehicle.
ACC Override
If using the accelerator pedal while ACC is
active, the ACC indicator turns blue on the
instrument cluster and HUD, if equipped.
ACC will resume operation when the
accelerator pedal is not being pressed.
Warning
The ACC will not automatically apply the
brakes if your foot is resting on the
accelerator pedal. You could crash into a
vehicle ahead of you.
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