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296 Driving and Operating
Automatic Braking (RAB) at
the same time. When the
system is turned off, a system
off message is shown on the
display. This message
disappears after a short
period of time.
Turn off Park Assist when
towing a trailer to prevent
unwanted beeps and when a
bike rack is attached to ensure
proper operation.
When the System Does Not
Seem to Work Properly
If a service message displays,
check the following conditions:
.The sensors may not be
clean. Keep the vehicle's
front and rear bumpers free
of mud, dirt, snow, ice, and
slush. For cleaning
instructions, see Exterior
Care0416.
.The Park Assist sensors may
be covered by frost or ice.
Frost or ice can form around
and behind the sensors and
may not always be seen; this
can occur after washing the vehicle in cold weather. The
message may not clear until
the frost or ice has melted.
If a service message displays
and the above conditions do
not exist, take the vehicle to
your dealer for repairs.
If the Park Assist System does
not activate due to a
temporary condition, a system
off message is shown on the
display. This can occur under
the following conditions:
.The driver has disabled the
system.
.An object is currently
blocking the rear sensors
(for example, bike rack,
tailgate, trailer hitch, etc.).
Once the object is removed,
Park Assist will return to
normal operation.
.The bumper is damaged.
Take the vehicle to your
dealer for repairs.
.Other conditions, such as
vibrations from a
jackhammer or the
compression of air brakes on a very large truck, are
affecting system
performance.
Automatic Parking
Assist (APA)
Automatic Parking Assist
(APA) with Braking
If equipped, under certain
conditions APA with Braking
can use sensors based on
sonar technology along the
vehicle’s front, rear and sides
to detect a parking spot, and
automatically park the vehicle
with some driver assistance.
The vehicle will automatically
maneuver into a detected spot
moving at or near idle speed.
It does this by automatically
steering and braking while the
driver is responsible for
acceleration and gear shifting
as needed. The driver must
always be prepared to apply
braking or additional
acceleration, as needed.

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Driving and Operating 299
System Limitations
Automatic Parking Assist has
certain limitations. The system
cannot:
.Continue to operate if the
maneuver speed exceeds
5 km/h (3 mph).
.Detect whether a parking
space is legal or restricted.
.Detect pavement markings
or lines.
.Park the vehicle closely lined
up with the vehicle next to it,
particularly if the spot is
approached at an angle or if
the parking space is angled.
.Park exactly centered in a
very large spot.
.Always detect short curbs.
.Operate while towing any
trailer.
.Function the vehicle is raised
or lowered by air
suspension,if equipped.When the System Does Not
Seem to Work Properly
If the vehicle does not reverse
into the expected parking
space, the system could be
maneuvering the vehicle into a
previously detected space.
Reverse Automatic
Braking (RAB)
Backing Warning and
Reverse Automatic
Braking (RAB)
If equipped, vehicles with
Adaptive Cruise Control (ACC)
have the Backing Warning
System and Reverse
Automatic Braking (RAB)
system. When in R (Reverse),
Backing Warning alerts of rear
objects at vehicle speeds
greater than 8 km/h (5 mph),
and RAB may automatically
brake hard at speeds between
1–32 km/h (0.5–20 mph).
The Backing Warning System
will beep once from the rear
when an object is first detected, or pulse twice on
both sides of the Safety Alert
Seat. When the system
detects a potential crash,
beeps will be heard from the
rear, or five pulses will be felt
on both sides of the Safety
Alert Seat. There may also be
a brief, sharp application of
the brakes.
{Warning
The Backing Warning
System only operates at
speeds greater than 8 km/h
(5 mph). It does not detect
children, pedestrians,
bicyclists, animals, or objects
below the bumper or that
are too close or too far from
the vehicle. In some
situations, such as at higher
backing speeds, there may
not be enough time for the
short, sharp application of
the vehicle brake system to
occur. To prevent injury,
death, or vehicle damage,
(Continued)

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302 Driving and Operating
If equipped, alerts can be set
to beeps or seat pulses. To
view available settings from
the infotainment screen, touch
Settings > Vehicle > Collision/
Detection Systems >
Alert Type.
Rear Cross Traffic
Alert (RCTA) System
If equipped, Rear Cross Traffic
Alert (RCTA) displays a red
warning triangle with a left or
right pointing arrow on the
infotainment display to warn
of traffic coming from the left
or right. This system detects
objects coming from up to
20 m (65 ft) from the left or
right side of the vehicle. When
an object is detected, either
three beeps sound from the
left or right or three Safety
Alert Seat pulses occur on the
left or right side, depending on
the direction of the detected
vehicle.Use caution while backing up
when towing a trailer, as the
RCTA detection zones that
extend out from the back of
the vehicle do not move
farther back when a trailer is
attached to the vehicle.
Driving With a Trailer
Use caution while backing up
when towing a trailer. The
RCTA feature is automatically
disabled when a trailer is
attached to the vehicle.
Turning the Features On
or Off
The
Xbutton on the center
stack is used to turn on or off
the Front and Rear Park
Assist, and Backing Warning
and Reverse Automatic
Braking (RAB) systems at the
same time. The indicator light
next to the button comes on
when the features are on and
turns off when the features
have been disabled. RCTA can be turned on or off
using the infotainment system.
To view available settings for
this feature, touch the
Settings icon on the
infotainment home page.
Select
“Vehicle” to display the
list of available options and
select “Collision/Detection
Systems”.
Assistance Systems
for Driving
If equipped, when driving the
vehicle in a forward gear,
Forward Collision Alert (FCA),
Lane Keep Assist (LKA), Side
Blind Zone Alert (SBZA), Lane
Change Alert (LCA), Automatic
Emergency Braking (AEB),
Front Pedestrian Braking
(FPB) System, and/or the
Night Vision System can help
to avoid a crash or reduce
crash damage.

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306 Driving and Operating
80 km/h (50 mph), or on
vehicles with Adaptive Cruise
Control (ACC), above 4 km/h
(2 mph). It can detect vehicles
up to approximately 60 m
(197 ft).
{Warning
AEB is an emergency crash
preparation feature and is
not designed to avoid
crashes. Do not rely on AEB
to brake the vehicle. AEB will
not brake outside of its
operating speed range and
only responds to detected
vehicles.
AEB may not:
.Detect a vehicle ahead on
winding or hilly roads.
.Detect all vehicles,
especially vehicles with a
trailer, tractors, muddy
vehicles, etc.(Continued)
Warning (Continued)
.Detect a vehicle when
weather limits visibility,
such as in fog, rain,
or snow.
.Detect a vehicle ahead if it
is partially blocked by
pedestrians or other
objects.
Complete attention is
always required while
driving, and you should be
ready to take action and
apply the brakes and/or
steer the vehicle to avoid
crashes.
AEB may slow the vehicle to a
complete stop to try to avoid a
potential crash. If this
happens, AEB may engage the
Electric Parking Brake (EPB)
to hold the vehicle at a stop.
Release the EPB or firmly
press the accelerator pedal.
{Warning
AEB may automatically
brake the vehicle suddenly in
situations where it is
unexpected and undesired.
It could respond to a turning
vehicle ahead, guardrails,
signs, and other non-moving
objects. To override AEB,
firmly press the accelerator
pedal, if it is safe to do so.
Intelligent Brake
Assist (IBA)
IBA may activate when the
brake pedal is applied quickly
by providing a boost to
braking based on the speed of
approach and distance to a
vehicle ahead.
Minor brake pedal pulsations
or pedal movement during this
time is normal and the brake
pedal should continue to be
applied as needed. IBA will
automatically disengage only
when the brake pedal is
released.

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312 Driving and Operating
Warning (Continued)
.If the person or animal is
moving too quickly
through the field of view,
such as a bicyclist.
.If the pedestrian is
wearing certain types of
clothing.
.If headlamps are off,
except when parked.
.If the outside temperature
is higher than 30 °C
(86 °F).
.Due to poor visibility,
including in heavy fog, rain,
or snow.
.If the sensor is blocked by
dirt, snow, rain, or ice.
Be ready to take action and
apply the brakes. For more
information, see Defensive
Driving 0235. Keep the
Night Vision sensor clean
and in good repair. Pedestrian detection may not
be available in high outside
temperatures. An amber icon,
*, displays. The system does
not need service.
In rain, snow, or fog the image
may not be clear and the
direction of the road ahead
may not be seen. In more
severe weather conditions,
the image may be unclear and
unusable. The system does
not need service.
Keep the system sensor clean
by activating the rear window
washer when it is dark enough
for the system to operate.
If the Night Vision image still
looks blurry, use a soft wet
cloth to gently clean the
sensor camera lens and dry
thoroughly. The sensor is
behind the lower front grille
below the driver side
headlamp.
The camera must also be
aligned to work correctly.
If the camera needs adjustment, see your dealer.
Do not attempt to adjust the
camera yourself.Side Blind Zone
Alert (SBZA)
If equipped, the SBZA system
is a lane-changing aid that
assists drivers with avoiding
crashes that occur with
moving vehicles in the side
blind zone, or blind spot areas.
When the vehicle is in a
forward gear, the left or right
side mirror display will light up
if a moving vehicle is detected
in that blind zone. If the turn
signal is activated and a
vehicle is also detected on the
same side, the display will flash
as an extra warning not to
change lanes. Since this
system is part of the Lane
Change Alert (LCA) system,
read the entire LCA section
before using this feature.

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Driving and Operating 323
towing, install extended side
view mirrors, even if not
required.
.Do not tow a trailer during
the first 800 km (500 mi) of
vehicle use to prevent
damage to the engine, axle,
or other parts.
.GM recommends performing
an oil change to the vehicle
before heavy towing.
.Do not drive over 80 km/h
(50 mph) and do not make
starts at full throttle during
the first 800 km (500 mi) of
trailer towing.
.Vehicles can tow in D (Drive).
If the transmission
downshifts too often, a
lower gear may be selected
using Manual Mode. See
Manual Mode0266.
If equipped, the following
driver assistance features
should be turned off when
towing a trailer:
.Adaptive Cruise
Control (ACC)
.Super Cruise Control
.Park Assist
.Automatic Parking
Assist (APA)
.Reverse Automatic
Braking (RAB)
If equipped, the following
driver assistance features
should be turned to alert or
off when towing a trailer:
.Automatic Emergency
Braking (AEB)
.Intelligent Brake Assist (IBA)
.Front Pedestrian
Braking (FPB)
If equipped with Lane Change
Alert (LCA), the LCA detection
zones that extend back from
the side of the vehicle do not
move further back when a
trailer is towed. Use caution
while changing lanes when
towing a trailer.
If equipped with Rear Cross
Traffic Alert (RCTA), use
caution while backing up when
towing a trailer, as the RCTA
detection zones that extend out from the back of the
vehicle do not move further
back when a trailer is towed.
{Warning
To prevent serious injury or
death from carbon monoxide
(CO), when towing a trailer:
.Do not drive with the
liftgate, trunk/hatch,
or rear-most
window open.
.Fully open the air outlets
on or under the
instrument panel.
.Adjust the climate control
system to a setting that
brings in only outside air.
See
“Climate Control
Systems” in the Index.
For more information about
carbon monoxide, see
Engine Exhaust 0260.

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356 Vehicle Care
5. Turn off the airconditioning.
6. Set the parking brake.
7. At the same time, press the accelerator and the
brake for automatic
transmission vehicles for
two seconds, then release.
At the end of the cycle, check
the coolant level in the surge
tank and add coolant, if it is
low. Turn off the vehicle, allow
the Engine Control Module
(ECM) to go to sleep, about
two minutes, and repeat
steps 3-7.
Listen for pump activation and
movement of the control
valves while watching the level
of the tank. If the tank
empties, turn the ignition off,
carefully remove the surge
tank cap, refill to the indicated
mark and repeat steps 3-6.
The fill and air removal
process will run for
approximately 10 minutes.Engine Overheating
The vehicle has several
indicators to warn of the
engine overheating.
There is an engine coolant
temperature gauge on the
instrument cluster. See Engine
Coolant Temperature Gauge
0 126. The vehicle may also
display a message on the
Driver Information
Center (DIC).
If the decision is made not to
lift the hood when this
warning appears, get service
help right away. See Roadside
Assistance Program 0446.
If the decision is made to lift
the hood, make sure the
vehicle is parked on a level
surface. Then check to see if
the engine cooling fan is
running. If the engine is
overheating, the fan should be
running. If it is not, do not
continue to run the engine.
Have the vehicle serviced.
Caution
Do not run the engine if
there is a leak in the engine
cooling system. This can
cause a loss of all coolant
and can damage the system
and vehicle. Have any leaks
fixed right away.
If Steam Is Coming from
the Engine Compartment
{Warning
Steam and scalding liquids
from a hot cooling system
are under pressure. Turning
the pressure cap, even a
little, can cause them to
come out at high speed and
you could be burned. Never
turn the cap when the
cooling system, including the
pressure cap, is hot. Wait for
the cooling system and
pressure cap to cool.

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402 Vehicle Care
{Warning
Changing a tire can be
dangerous. The vehicle can
slip off the jack and roll over
or fall causing injury or
death. Find a level place to
change the tire. To help
prevent the vehicle from
moving:1. Set the parking brake firmly.
2. Put the vehicle in P (Park).
3. Turn the vehicle off and do not restart the vehicle
while it is raised.
4. Do not allow passengers to remain in the vehicle.
5. Place wheel blocks, if equipped, on both sides
of the tire at the
opposite corner of the
tire being changed. When the vehicle has a flat
tire (2), use the following
example as a guide to assist in
the placement of the wheel
blocks (1), if equipped.
1. Wheel Block (If Equipped)
2. Flat Tire
The following information
explains how to repair or
change a tire.
Tire Changing
Performance Brake
Package RPO J56
The original spare tire/wheel
will not fit onto the front axle if
equipped with the
performance brake package RPO J56. If there is a flat tire
on the front axle, a tire/wheel
from the rear axle must be
used to make the repair. The
spare tire will then replace the
tire/wheel that is removed
from the rear axle.
If equipped with the
performance brake package
RPO J56, and the flat tire is on
the front axle, stop after
performing all steps in
Removing the Spare Tire and
Tools and do the following.
Otherwise, continue with the
procedure: