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.To accept the new set speed, briefly
move the thumbwheel down to−SET and
release it.
.To decline the new set speed, briefly
move the thumbwheel up to +RES and
release it.
If you do not accept or decline the new
proposed set speed, there is no change to
the set speed.
Conditions Affecting Automatic Speed
Limiter (Auto)
.There are changes in brightness, such as
entering and exiting tunnels, bridges, and
overpasses.
.There are low sun angles.
.Ambient lighting is poor in the evening or
early morning.
.There are multiple changes in brightness
or there are shadows along the roadway.
.There are conditions associated with low
visibility such as fog, rain, snow, or road
spray.
.The on-board camera’s view of the road is
blocked by leaves, snow, or other debris.
If Automatic Speed Limiter becomes
temporarily unavailable, change to
Manual mode. Resuming Speed Limiter
If Speed Limiter was active but then
*was
pressed, Speed Limiter can be resumed using
the previous set speed. Briefly move the
thumbwheel up to +RES and release it to
activate Speed Limiter using the previous set
speed.
If Speed Limiter was turned off because
cruise control, ACC, or Super Cruise was
turned on, to use Speed Limiter again:
1. Turn off cruise control, ACC, or Super Cruise.
2. On the infotainment home screen, touch Controls > Drive (Drive & Park) > Speed
Limiter.
3. Select Manual or Auto.
Overriding Speed Limiter
When Speed Limiter is active, the set speed
can be temporarily overridden only when
you fully apply the accelerator pedal. You
can control vehicle acceleration again when
the vehicle speed is below the set speed.
Turning Off Speed Limiter
To turn off Speed Limiter, from the
infotainment home screen, touch Controls >
Drive (Drive & Park) > Speed Limiter > Off.
Adaptive Cruise Control
(Advanced)
If equipped, Adaptive Cruise Control (ACC)
allows the cruise control set speed and
following gap to be selected. Read this
entire section before using this system. The
following gap is the following time (or
distance) between your vehicle and a vehicle
detected directly ahead in your path,
moving in the same direction. If no vehicle
is detected in your path, ACC works like
regular cruise control. ACC uses a camera
and radar sensor(s) to detect other vehicles.
See Radio Frequency Statement 0404.
If a vehicle is detected in your path, ACC can
apply acceleration or limited, moderate
braking to maintain the selected following
gap. To disengage ACC, apply the brake
pedal or press
*. If ACC is controlling the
vehicle speed when the Traction Control
System (TCS) or StabiliTrak/Electronic
Stability Control (ESC) system activates, ACC
may disengage. See Traction Control/
Electronic Stability Control 0207. When road
conditions allow ACC to be safely used, ACC
can be turned back on.
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*:Press to disengage ACC without erasing
the selected set speed. Press and hold to
switch between ACC and regular cruise
control. See “Switching Between ACC and
Regular Cruise Control” later in this section.
[:Press to cycle through the three
following gap settings for ACC: Far, Medium,
or Near. See “Selecting the Follow Distance
Gap” later in this section.
The speedometer reading can be displayed
in either English or metric units. See Settings
0 166. The increment value used depends on
the units displayed.
Switching Between ACC and Regular Cruise
Control
To switch between ACC and regular cruise
control, press and hold
*. A message is
briefly displayed in the Driver Information
Center (DIC). See Vehicle Messages 0135.
ACC IndicatorRegular Cruise Control
Indicator When ACC is the selected cruise control
mode and is activated, a green
\ACC
indicator light is displayed in the instrument
cluster and the following gap is displayed.
When regular cruise control is the selected
cruise control mode and is activated, a green
Jcruise control indicator light is displayed
in the instrument cluster, however the
following gap is not displayed.
When the vehicle is turned on, the cruise
control mode will be set to the last mode
used before the vehicle was turned off.
{Warning
Always check the cruise control indicator
on the instrument cluster to determine
which mode cruise control is in before
using the feature. If ACC is not active, the
vehicle will not automatically brake for
other vehicles, which could cause a crash
if the brakes are not applied manually.
You and others could be seriously injured
or killed. Setting Adaptive Cruise Control
If ACC is on but not engaged, the
thumbwheel could be pressed to
−SET or
+RES and engage ACC when not desired.
Keep ACC off when it is not being used.
Press
5to turn off ACC.
The set speed is the vehicle speed when
another vehicle is not detected in your path.
ACC cannot be set below the minimum
allowable cruise speed. For vehicles that are
not equipped with Super Cruise, the
minimum allowable ACC cruise speed is
25 km/h (15 mph). For vehicles equipped with
Super Cruise, the minimum allowable ACC
cruise speed is 5 km/h (3 mph).
To set the ACC cruise speed while moving: 1. Press
5.
2. Accelerate to the desired speed.
3. Briefly press the thumbwheel down to –SET and release it.
4. Gently remove your foot from the accelerator pedal.
After the ACC cruise speed is set, ACC may
immediately apply the brakes if it detects a
vehicle ahead that is closer than the
selected following gap.
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220 Driving and Operating
The ACC cruise speed can be set while the
vehicle is stopped if ACC is on and the brake
pedal is applied.
The ACC indicator light is displayed in the
instrument cluster and the Head-Up Display
(HUD), if equipped. When ACC is on but not
engaged, the ACC indicator light is lit white.
When ACC is on and is engaged, the ACC
indicator light is lit green.
Always pay attention to the speed limit,
surrounding traffic speeds, and weather
conditions when selecting the set speed.
Resuming a Set Speed
If ACC is engaged at a set speed and then
the brakes are applied, ACC is disengaged
without erasing the set speed from memory.
To resume ACC, briefly press the
thumbwheel up to +RES and release it.
.If the vehicle is moving more than 5 km/h
(3 mph), the vehicle accelerates to resume
the previous set speed.
.If the vehicle is stopped with the brake
pedal applied, briefly press and release
the thumbwheel up to +RES and then
release the brake pedal. ACC will hold the
vehicle until +RES or the accelerator pedal
is pressed.
When ACC is active, the set speed value and
the ACC indicator light are displayed green
in the instrument cluster. The vehicle ahead
indicator may repeatedly flash if a vehicle
ahead was present and then moved. See
“Approaching and Following a Vehicle” later
in this section.
If ACC is active, ACC will accelerate the
vehicle to the set speed under the following
conditions:
.There is no vehicle ahead.
.The vehicle ahead is beyond the selected
following gap.
.The vehicle speed is not being limited
because of a sharp turn.
Increasing Speed While ACC Is at a Set Speed
If ACC is already activated, do one of the
following:
.Use the accelerator pedal to reach the
desired cruise speed. Briefly press and
release the thumbwheel down to –SETand then release the accelerator pedal.
The vehicle will now cruise at the higher
speed.
When the accelerator pedal is pressed,
ACC will not brake because it is
overridden. While ACC is overridden, the
ACC indicator light will turn blue in the
instrument cluster and in the HUD,
if equipped.
.Press and hold the thumbwheel up to
+RES until the desired set speed is
displayed, then release it.
.To increase the vehicle speed in smaller
increments, briefly press and release the
thumbwheel up to +RES. For each press,
the vehicle speed increases by about
1 km/h (1 mph).
.To increase the vehicle speed in larger
increments, press and hold the
thumbwheel up to +RES, and then release
it when the desired set speed is reached.
While holding +RES, the vehicle speed
increases to the next 5 km/h (5 mph)
increment then continues to increase by
5 km/h (5 mph) increments until the
thumbwheel is released.
The set speed can also be increased while
the vehicle is stopped.
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Courtesy Gap
You can temporarily increase the follow
distance gap between your vehicle and the
vehicle ahead of you to allow more space
for merging traffic.
.When your vehicle is moving, press and
hold
[on the steering wheel to
temporarily increase the gap distance.
When you release
[, ACC may
accelerate to resume the ACC set speed
while maintaining the normal gap
distance setting.
.When your vehicle is stopped, press and
hold
[to prevent ACC from
automatically resuming the set speed,
which can allow for merging traffic to
merge between your vehicle and the
vehicle ahead of you. When you are
ready to resume ACC, briefly press and
release the thumbwheel up to +RES,
or the apply the accelerator pedal. Alerting the Driver
If ACC is engaged, driver action may be
required when ACC cannot apply sufficient
braking because your vehicle is approaching
a vehicle ahead too quickly.
When this condition occurs, the red collision
alert symbol will flash on the windshield.
Either eight beeps will sound from the front,
or both sides of the Safety Alert Seat will
pulse five times. To view available settings
from the infotainment screen, touch Settings
> Vehicle > Collision/Detection Systems.
See
Defensive Driving 0183.
Approaching and Following a Vehicle
The vehicle ahead indicator light is displayed
in the instrument cluster and the HUD,
if equipped. It only displays when a vehicle
is detected in your vehicle’s path and is
moving in the same direction. If the vehicle
ahead indicator light does not appear in the
instrument cluster, then ACC will not
respond to, or brake for, vehicles ahead.
While ACC is active, ACC will automatically
adjust your vehicle’s speed to follow a
detected vehicle ahead according to the
selected following gap setting. ACC may
decrease your vehicle’s cruise speed when
following a detected vehicle ahead that is
traveling slower than your ACC set speed.
ACC may apply limited braking, if necessary.
When ACC automatic braking is active, the
brake lamps will turn 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.
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{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 the
driver will need to manually apply the
brakes to slow the vehicle if:
.The sensors are blocked.
.The Traction Control System (TCS) or
StabiliTrak/ESC system has activated or
has been disabled.
.If equipped with Air Suspension, the
vehicle ride height is outside normal
operating range. See Air Suspension0211.
.There is a fault in the system.
.The radar falsely reports a blockage when
driving in a remote area with no other
vehicles or roadside objects.
A DIC message may display to indicate that
ACC is temporarily unavailable. The ACC indicator light will turn white when
ACC is disengaged.
In some cases, when ACC is temporarily
unavailable, 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 mode.
Notification to Resume ACC
ACC will maintain a follow distance gap
behind a detected vehicle, and will slow
down 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. To view available
settings from the infotainment screen, touch
Settings > Vehicle > Collision/Detection
Systems > Alert Type > Adaptive Cruise Go
Notifier.
If equipped with Driver Attention System
(DAS) located on top of the steering column,
when the vehicle ahead drives away, and
the DAS determines that the driver's
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attention is on the road ahead, ACC
automatically resumes. For more
information, see“Attention to the Road" in
Super Cruise 0227. If necessary, briefly press
and release the thumbwheel up to +RES or
apply 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 system
automatically applies the Electric Parking
Brake (EPB) to hold the vehicle. The EPB
light will turn on. To release the EPB, press
the accelerator pedal. See Electric Parking
Brake 0205.
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 it off before leaving the
vehicle.
ACC Override
If you apply the accelerator pedal while ACC
is engaged, the ACC indicator light turns
blue in the instrument cluster and the HUD,
if equipped, indicating that ACC braking will
not occur. ACC will resume operation when
the accelerator pedal is released.
{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.
{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 when the
vehicle approaches a sharp curve in the road
ahead. If the ACC system detects that a
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226 Driving and Operating
curve is too sharp, ACC may temporarily
reduce the vehicle speed while navigating
the curve.
The curve speed control indicator light
b
may illuminate green when ACC is actively
controlling the vehicle speed and detects a
sharp curve in the road ahead.
ACC may automatically increase the vehicle
speed when exiting out of the curve,
however ACC 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 or 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. You may need to
manually apply the brakes.
Objects Not Directly in Front of Your Vehicle
The ACC system may not be able to detect
all objects in front of the vehicle 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.
Driving in Narrow Lanes
Vehicles in adjacent traffic lanes or roadside
objects may be incorrectly detected when
located along the roadway.
Do Not Use ACC on Hills
Do not use ACC when driving on steep hills.
ACC will not detect a vehicle ahead.
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Towing with ACC
If equipped when towing a trailer, ACC
driving characteristics such as following gap,
acceleration rates, and braking rates may be
modified to provide a better towing
experience.
When ACC is used with vehicles equipped
with an aftermarket trailer brake controller,
disengage ACC before applying the manual
trailer brake. ACC will not automatically
disengage when the manual trailer brake is
applied.
ACC may be used when towing a trailer if
the trailer is within the GM-approved
allowable size and weight limits. SeeTrailer
Towing 0297.
When towing a trailer with ACC, it is
important to properly set the Trailer Gain.
See “Integrated Trailer Brake Control
System” inTowing Equipment 0301 for
information about the 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 0209. Disengaging ACC
There are four ways to disengage ACC:
.Press*.
.Lightly apply the brake pedal.
.Apply the Regen on Demand steering
wheel paddle, if equipped.
.Press5.
Erasing Speed Memory
The ACC set speed is erased from memory if
5is pressed or if the vehicle is turned off.
Weather Conditions Affecting ACC
ACC system operation may be limited under
snow, heavy rain, or road spray conditions.
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 may obstruct
the front camera, such as a canoe, kayak,
or other items that can be transported on
top of the vehicle.
.Do not modify the hood, headlamps,
or fog lamps, as this may limit the
camera’s ability to detect an object. Cleaning the Sensing System
The camera sensor on the windshield behind
the rearview mirror, and the sensors on the
front of the vehicle can become blocked by
snow, ice, dirt, mud, or other debris. These
areas must be clean for ACC to operate
properly. For proper cleaning instructions,
see the section
“Washing the Vehicle” in
Exterior Care 0379.
If driving conditions temporarily prevent
normal and safe ACC operation, regular
cruise control may be available. See
“Switching Between ACC and Regular Cruise
Control” previously in this section. Always
consider driving conditions before using
either cruise control system.
Super Cruise
If equipped, Super Cruise can steer to
maintain lane position under certain
conditions on Super Cruise-enabled roads.
Super Cruise can also steer to perform a
lane change under certain conditions on
Super Cruise-enabled roads.
A lane change can be initiated by the driver
using the turn signal lever.