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260 Driving and Operating
.If ACC is holding the vehicle at a stop and
there is another vehicle directly ahead,
pressing RES+ will increase the set speed.
.Pressing RES+ when there is no longer a
vehicle ahead or the vehicle ahead is
pulling away and the brake is not applied
with cause the ACC to resume.
When it is determined that there is no
vehicle ahead or the vehicle ahead is beyond
the selected following gap, then the vehicle
speed will increase to the set speed.
Reducing Speed While ACC Is at a Set Speed
If ACC is already activated, do one of the
following:
.Use the brake to get to the desired lower
speed. Release the brake and press SET–.
The vehicle will now cruise at the lower
speed.
.Press and hold SET– until the desired
lower speed is reached, then release it.
.To decrease the vehicle speed in smaller
increments, press SET− briefly. For each
press, the vehicle goes about 1 km/h
(1 mph) slower.
.To decrease the vehicle speed in larger
increments, hold SET−. While holding SET
−, the vehicle speed decreases to the next
5 km/h (5 mph) step, then continues to
decrease by 5 km/h (5 mph) at a time.
The set speed can also be decreased while
the vehicle is stopped.
.If stopped with the brake applied, press
or hold SET− until the desired set speed is
displayed.
Selecting the Follow Distance Gap
When a slower moving vehicle is detected
ahead within the selected following gap,
ACC will adjust the vehicle's speed and
attempt to maintain the follow distance gap
selected.
Press
[on the steering wheel to adjust
the following gap. Each press cycles the gap
button through three settings: Far, Medium,
or Near.
When pressed, the current gap setting
displays briefly on the instrument cluster
and HUD, if equipped. The gap setting will
be maintained until it is changed.
Far Gap Setting
Medium Gap Setting

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262 Driving and Operating
Alerting the Driver
With Head-Up Display
Without Head-Up Display
If ACC is engaged, driver action may be
required when ACC cannot apply sufficient
braking because of approaching a vehicle
too rapidly.
When this condition occurs, the collision
alert symbol will flash on the windshield.
Either eight beeps will sound from the front,
or both sides of the Safety Alert Seat,
if equipped, will pulse five times. See
“Collision/Detection Systems” underVehicle
Personalization 0137.
See Defensive Driving 0206. Approaching and Following a Vehicle
The vehicle ahead indicator is in the
instrument cluster and HUD (if equipped).
It only displays when a vehicle is detected
in your vehicle’s path moving in the same
direction. If this symbol is not displaying,
ACC will not respond to or brake for vehicles
ahead.
ACC automatically slows the vehicle down
and adjusts vehicle speed to follow a
detected vehicle ahead at the selected
following gap. The vehicle speed increases or
decreases to follow a detected vehicle in
front of your vehicle when that vehicle is
traveling slower than your vehicle set speed.
It may apply limited braking, if necessary.
When braking is active, 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 (Continued)

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264 Driving and Operating
underSuper Cruise 0267. 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 0245. To 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 0136.
{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
(Continued)
Warning (Continued)
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 (Continued)
Warning (Continued)
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.
{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
bmay illuminate green when
ACC is actively controlling the vehicle speed
and detects a sharp curve on the road
ahead.

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266 Driving and Operating
ACC may be used when towing a trailer
when trailer attached is within GM-approved
allowable size and weight limits. SeeTrailer
Towing 0313.
When towing a trailer with ACC, it is
important to properly set the Trailer Gain.
See “Integrated Trailer Brake Control
System” inTowing Equipment 0317 for
Trailer Gain Adjustment Procedure.
Use Tow/Haul mode when driving down
steep hills or mountain grades, or when
hauling heavy loads. See Driver Mode
Control 0249.
Disengaging ACC
There are three ways to disengage ACC:
.Step lightly on the brake pedal.
.Press*.
.PressJ.
Erasing Speed Memory
The ACC set speed is erased from memory if
Jis pressed or if the ignition is turned off.
Weather Conditions Affecting ACC
If the interior temperature is extremely
high, the instrument cluster may indicate
that ACC is temporarily unavailable. This can
be caused by extreme hot weather conditions with direct sunlight on the front
camera. ACC will return to normal operation
once the cabin temperature is lower.
Conditions that are associated with low
visibility, such as fog, rain, snow, or road
spray, may limit ACC performance. Water
droplets from rain or snow that remain on
the windshield may also limit ACC’s ability
to detect objects.
System operation may be limited under
snow, heavy rain, or road spray conditions.
{Warning
Camera visibility may be limited and the
ACC system may not work properly if the
windshield is not clear. Do not use ACC if
moisture is present on the inside of the
windshield or the windshield washer is
used in cold weather. Turn on the front
defroster and make sure the windshield is
clear before using ACC. Before driving,
check that the windshield wipers are in
good condition and replace them if worn.
Lighting Conditions Affecting ACC
The ACC front camera can be affected by
poor lighting conditions, and ACC may have
limited performance when:
.There are changes in brightness, such as
entering and exiting tunnels, bridges, and
overpasses.
.Low sun angles cause the camera to not
detect objects, or it is more difficult to
detect objects in the same traffic lane.
.Lighting is poor in the evening or early
morning
.There are multiple changes in brightness
or shadows along the vehicle roadway.
.In a tunnel without the headlamps on,
or in a tunnel when there is a vehicle in
front that does not have its taillamps on.
.Subjected to strong light from opposing
lane traffic in the front of the vehicle,
such as high-beam headlamps from
oncoming traffic.
Accessory Installations and Vehicle
Modifications
Do not install or place any object around
the front camera windshield area that would
obstruct the front camera view.
Do not install objects on top of the vehicle
that overhang and obstruct the front
camera, such as a canoe, kayak, or other
items that can be transported on the
vehicle roof.

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270 Driving and Operating
Poor Conditions
Using Super Cruise
{Warning
To prevent serious injury or death:
.Always check that Super Cruise is
available
^before pressing].
.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 (Camera) 0256. 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.
Super Cruise, when engaged, will enable the
Forward Collision System to 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.

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Driving and Operating 271
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.
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.
{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
Super Cruise can steer to perform a single
lane change under certain conditions when
requested by the driver or initiated by the
Super Cruise System. 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 0149.
Super Cruise System may initiate a single
lane change when enabled through Vehicle
Personalization under following conditions:
.The Super Cruise System may initiate a
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 a lane
change to left or right when current lane
is ending ahead.
.To cancel a Super Cruise lane change,
return the turn signal lever to the neutral
position or move the turn signal lever.
.Super Cruise steering can be overridden
with manual steering at any time to
cancel a 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.
Super Cruise Lane Change functionality is
only available on Super Cruise capable
divided roads.
The Super Cruise Lane Change feature can
be enabled or disabled through the vehicle
personalization menu. See “Super Cruise
Lane Change” underVehicle Personalization
0 137.
Super Cruise Lane Change may be disabled
when a trailer or other accessory (e.g. bike
rack, cargo tray, etc) is detected.
Do not use Super Cruise Lane Change
feature when towing a trailer.

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272 Driving and Operating
{Warning
Super Cruise Lane Change may not detect
a vehicle in an adjacent lane. Always
supervise the driving task and monitor
traffic conditions when 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 0137. After you begin
steering manually, then 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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276 Driving and Operating
Other Vehicles Entering Your Lane
Super Cruise may not detect a vehicle that
enters your lane, or may not brake fast
enough to avoid a crash. You must manually
brake and steer the vehicle.
Intersections; Vehicles Crossing the Road
Ahead
Super Cruise will not brake the vehicle when
approaching an intersection that is
controlled by a traffic light or stop sign.
Super Cruise will not detect vehicles crossing
the road ahead, including at intersections,
and will not automatically steer or brake to
prevent a collision. You must manually
brake and steer the vehicle.Towing a Trailer
Super Cruise may be used when towing a
trailer when trailer attached is within
GM-approved allowable size and weight
limits.
Super Cruise should not be used while
towing a trailer with an after-market trailer
brake controller.
Do not use Super Cruise Lane Change when
towing a trailer.
For towing capability, see
Trailer Towing
0 313.
Super Cruise on Hills
Do not use Super Cruise while driving on
steep hills. Super Cruise Indicator Light SummaryThe steering wheel light bar and instrument
cluster light provide the following important
information about Super Cruise operation: