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276 DRIVING AND OPERATING
the brake lamps will come on. The
automatic braking may feel or sound
different than if the brakes were
applied manually. This is normal.
Passing a Vehicle While Using ACC
If the set speed is high enough, and
the left turn signal is used to pass a
vehicle ahead in the selected following
gap, ACC may assist by gradually
accelerating the vehicle prior to the
lane change.
{Warning
When using ACC to pass a vehicle
or perform a lane change, the
following distance to the vehicle
being passed may be reduced. ACC
may not apply sufficient
acceleration or braking when
passing a vehicle or performing a
lane change. Always be ready to
manually accelerate or brake to
complete the pass or lane change.Stationary or Very Slow-Moving
Objects
{Warning
ACC may not detect and react to
stopped or slow-moving vehicles
ahead of you. For example, the
system may not brake for a vehicle
it has never detected moving. This
can occur in stop-and-go traffic or
when a vehicle suddenly appears
due to a vehicle ahead changing
lanes. Your vehicle may not stop
and could cause a crash. Use
caution when using ACC. Your
complete attention is always
required while driving and you
should be ready to take action and
apply the brakes.
Irregular Objects Affecting ACC
ACC may have difficulty detecting the
following objects:
.Vehicles with cargo extending from
the back end.
.Non-standard shaped vehicles, such
as vehicle transport, vehicles with a
side car fitted, or horse carriages.
.Objects that are close to the front of
your vehicle.
ACC Automatically Disengages
ACC may automatically disengage and
you 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 falsely reports 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when ACC is no longer active.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 will not
activate, regular Cruise Control may
be used. See “Switching Between ACC
and Regular Cruise Control ”previously
in this section. Always consider
driving conditions before using either
cruise control system.

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DRIVING AND OPERATING 277
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” underVehicle Personalization
0 126.
When the vehicle ahead drives away,
ACC resumes automatically if the stop
was brief. If necessary, press RES+ or
the accelerator pedal to resume ACC.
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 0255.
To release the EPB, press the
accelerator pedal. A DIC warning message may display
indicating to shift to P (Park) before
exiting the vehicle.
{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. 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 in the HUD (if equipped) to indicate that
automatic braking will not occur. 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.
Curves in the Road
{Warning
On curves, ACC may not detect a
vehicle ahead in your lane. You
could be startled if the vehicle
accelerates up to the set speed,
especially when following a vehicle
exiting or entering exit ramps. You
could lose control of the vehicle or
crash. Do not use ACC while driving
on an entrance or exit ramp. Always
be ready to use the brakes if
necessary.

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278 DRIVING AND OPERATING
{Warning
On curves, ACC may respond to a
vehicle in another lane, or may not
have time to react to a vehicle in
your lane. You could crash into a
vehicle ahead of you, or lose control
of your vehicle. Give extra attention
in curves and be ready to use the
brakes if necessary. Select an
appropriate speed while driving in
curves.
ACC may operate differently in a
sharp curve. It may reduce the vehicle
speed if the curve is too sharp.
If equipped, the curve speed control
indicator
nmay illuminate green
when ACC is actively controlling the
vehicle speed and detects a sharp
curve on the road ahead.
ACC automatically slows the vehicle
down while navigating the curve and
may increase speed out of the curve,
but will not exceed the set speed.
When following a vehicle and entering
a curve, ACC may not detect the
vehicle ahead and accelerate to the set
speed. When this happens, the vehicle
ahead indicator will not appear.
ACC may detect a vehicle that is not
in your lane and apply the brakes.
ACC may occasionally provide an alert
and/or braking that is considered
unnecessary. It could respond to
vehicles in different lanes, signs, guardrails, and other stationary
objects when entering or exiting a
curve. This is normal operation. The
vehicle does not need service.
Other Vehicle Lane Changes
ACC will not detect a vehicle ahead
until it is completely in the lane. The
brakes may need to be manually
applied.
Objects Not Directly in Front of Your
Vehicle
The detection of objects in front of
the vehicle may not be possible if:
.The vehicle or object ahead is not
within your lane.
.The vehicle ahead is shifted, not
centered, or is shifted to one side of
the lane.

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282 DRIVING AND OPERATING
Warning (Continued)
.Not on slippery or icy roads.
.Not in adverse weather
conditions, including rain, sleet,
fog, ice, or snow.
.Not on winding or hilly roads.
.Not for city driving.
.Not during heavy or emergency
braking.
.Not on surface streets.
.Not on a road shoulder, service
drive, or under an elevated
freeway.
.Not when towing a trailer that
does not meet GM approved
guidelines.
.Not in a highway exit lane.When Super Cruise is Available
Super Cruise Indicator
Super Cruise is designed to operate
only when:
.ACC is on. See Adaptive Cruise
Control (Advanced) 0270.
.Teen Driver is not active.
.The GPS detects the vehicle is on a
compatible road.
.Both the camera and the radar
sensors are functioning and not
covered, obstructed, or damaged.
.The Driver Attention System (DAS)
detects the driver's head and eyes
are directed toward the road ahead.
.The lane markings are clearly visible
and able to be detected by the
system.
Poor Conditions
Poor Conditions
{Warning
To prevent serious injury or death:
.Always check that Super Cruise
is available
^before
pressing
]. (Continued)

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DRIVING AND OPERATING 283
Warning (Continued)
.Only remove your hands from
the steering wheel if the steering
wheel light bar,
^, and\are
green. Super Cruise may not
begin steering immediately, even
when Super Cruise is available
and
]has been pressed.
To engage:
.PressJto turn on ACC. Make sure
the white
\indicator displays in
the instrument cluster. See Adaptive
Cruise Control (Advanced) 0270. When Super Cruise is available, the
white
^will display in the
instrument cluster.
.Press].
ACC will set the speed to the
current vehicle speed or resume to
the higher previously stored ACC set
speed.
When engaged and not steering the
vehicle, the steering wheel light bar
flashes blue, and
^will be blue. The
driver is in control of steering and
Super Cruise is not steering the
vehicle.
When the vehicle is positioned in the
center of the lane, the steering wheel
light bar and
^display will turn
green, indicating Super Cruise is
steering the vehicle.
When Super Cruise controls the
steering, traffic and other conditions
and laws permit, and it is safe to do
so, your hands can be taken off the
steering wheel.
Always pay attention to the road and
the operation of the vehicle. Always
monitor and be attentive of surrounding traffic, including vehicles
that may cross the road in front of
your vehicle.
Super Cruise steering can be
overridden with manual steering at
any time. When Super Cruise is
engaged, always be prepared to take
immediate action
—including
steering, accelerating, and braking
quickly, if necessary.
When Super Cruise is engaged, the
Forward Collision System will alert
and brake.
Steering Manually and Changing
Lanes
The vehicle can always be manually
steered, even with Super Cruise
engaged; for example, when manually
changing lanes.
When the steering wheel is moved
manually, the steering wheel light bar
flashes blue and
^on the
instrument cluster turns blue to
indicate Super Cruise is not steering
the vehicle.

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284 DRIVING AND OPERATING
When ready to allow Super Cruise to
resume steering again, position the
vehicle in the center of the lane, hold
the steering wheel until the steering
wheel light bar turns green, and then
release the steering wheel when it is
safe to do so.
Super Cruise does not respond to
vehicles in other lanes near your
vehicle.
{Warning
To help prevent crashes before
making a lane change:
.Always check mirrors.
.Glance over your shoulder.
.Use the turn signals.
Super Cruise Lane Change
If Super Cruise detects that traffic is
clear, Super Cruise will steer the
vehicle to perform the lane change.
A message appears on the Driver
Information Center (DIC) during the
lane change to provide more
information on the status of the lane
change. The Super Cruise Automatic Lane
Change feature can be enabled or
disabled through the vehicle
personalization menu. See
“Super
Cruise Lane Change ”under Vehicle
Personalization 0126.
On Demand Lane Changes
Super Cruise can steer to perform a
single lane change under certain
conditions when requested by the
driver.
To request a lane change: 1. Verify the lane next to your vehicle is clear and conditions are safe to
make a lane change.
2. Use the turn signal lever to activate the turn signal in the direction of
the desired lane change.
3. Return the turn signal lever to the neutral position after the lane
change. See Turn and Lane-Change
Signals 0138.
4. To cancel a lane change, return the turn signal lever to the neutral
position, move the lever in the
opposite direction of the lane
change, or steer manually at
any time. Automatic Lane Changes
Super Cruise System may initiate an
automatic single lane change when
enabled through
Vehicle
Personalization 0126 under following
conditions:
.The Super Cruise System may
initiate an automatic lane change to
the left to pass a slower moving
vehicle ahead and a subsequent
lane change to right to return to
your original lane.
.Super Cruise System may initiate an
automatic lane change to left or
right when current lane is ending
ahead.
.To cancel a Super Cruise automatic
lane change, return the turn signal
lever to the neutral position, move
the turn signal lever, or steer
manually at any time.
{Warning
Super Cruise Lane Change may not
detect a vehicle in an adjacent lane.
Always supervise the driving task
and monitor traffic conditions when
(Continued)

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DRIVING AND OPERATING 285
Warning (Continued)
using the Super Cruise Lane Change
feature. Only request a lane change
when traffic conditions are safe for
a lane change, and always be ready
to manually steer the vehicle. See
“Steering Manually and Changing
Lanes”listed previously in this
section.
Take Over Alert
{Warning
Super Cruise will not maintain the
vehicle’s speed while the steering
wheel light bar is flashing red.
If the steering wheel light bar
flashes red, immediately resume
manual steering to prevent serious
injury or death. If you do not
resume manual steering, the vehicle
will begin to slow in the same lane
and eventually come to a complete
stop on the road. To begin steering manually, hold the
steering wheel firmly (with both
hands) using the highlighted regions
as shown in the picture below.
Any time the steering wheel light bar
flashes red, resume manual steering
immediately. The instrument cluster
light
^, will also turn red and a
message will display in the Driver
Information Center (DIC). In addition,
beeps will sound, or the Safety Alert
Seat will vibrate. See “Collision/
Detection Systems” underVehicle
Personalization 0126. After you begin
steering manually, Super Cruise will
disengage. The red flashing steering wheel light
bar could occur under any of the
following conditions:
.Lane markings are poor, or visibility
is limited.
.The Driver Attention System (DAS)
does not detect that the driver's
head and eyes are directed toward
the road.
.ACC is canceled.
.The vehicle is on a tight curve,
or the lanes are too wide, or the
vehicle goes into a curve too fast.
.The compatible road ends.
.The vehicle is approaching an
intersection controlled by a traffic
light, stop sign, or other traffic
control device.
.A Super Cruise system fault occurs.
.Super Cruise is unable to complete
the lane change maneuver.

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286 DRIVING AND OPERATING
Attention to the Road
{Warning
Super Cruise is a driver assistance
system and cannot accurately
detect or predict all situations.
Super Cruise is not a crash
avoidance system. To prevent
serious injury or death, you must
supervise the driving task and
monitor the road conditions. You
may need to respond to traffic
events by steering, braking,
or accelerating. SeeDefensive
Driving 0217. Super Cruise also
cannot determine whether you are
awake, asleep, impaired, or properly
focused on safe driving. The vehicle
could crash into other vehicles,
drive out of the lane, or drive off
the road. Complete attention is
always required while driving, even
while using Super Cruise. Be
prepared to take over steering or
apply the brakes at any time.
{Warning
To prevent serious injury or death,
be alert and pay special attention
when passing highway exits,
entrances, and crossings with Super
Cruise, and be ready to take control
of the vehicle when necessary.
Changes in lane markings around
exits and entrances can
momentarily cause Super Cruise to
not detect the correct lane. If this
occurs, Super Cruise may attempt
steering inputs to bring the vehicle
back into the correct lane and, in
rare circumstances, could
over-correct and cause the vehicle
to momentarily cross into a lane
next to your vehicle unless you
manually steer to maintain your
lane position. The Driver Attention System (DAS) on
the steering column continually
monitors driver head and eye position
to estimate driver attention to the
road. The camera does not record or
share pictures, audio, or video.
Sunglasses, hats, or other types of
clothing that change the shape of the
head may interfere with camera
performance. To improve camera
performance, raise or lower the
steering wheel, or change the seat
position.
Pay close attention to the road ahead
to avoid these three increasing alerts: