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262 Driving and Operating
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:
On Demand Lane Changes 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 0141. 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 a single
lane change when enabled through vehicle
settings 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 may initiate an automatic
lane change to left or right when a
slower moving vehicle is detected in the
adjacent ending lane to provide space for
merging vehicle.
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.
Super Cruise Lane Change may be disabled
when a trailer or other accessories (e.g. bike
rack, cargo tray, etc.) are detected. Do not
use Super Cruise Lane Change when towing
a trailer.
The Super Cruise Lane Change feature can
be customized to be Off, On Demand Lane
Change, or On Demand Lane Change &
Automatic Lane Change through the vehicle
personalization menu. Touch the Settings
icon on the infotainment home page. Select
“Vehicle”
to display the list of available
options and select “Super Cruise Lane
Change”.
{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
(Continued)
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Driving and Operating 263
Warning (Continued)
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.
Any time the steering wheel light bar
flashes red, resume manual steering. To begin steering manually, hold the
steering wheel firmly (with both hands)
using the highlighted regions as shown in
the picture below.
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. To view Collision and Detection
options, touch the Settings icon on the
infotainment home page. Select “Vehicle”to
display the list of available options and
select “Collision/Detection Systems”. 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.
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 (Continued)
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Driving and Operating 265
First Alert
.If the steering wheel light bar flashes green, the system has detected that your head and eyes may not
be directed toward the road.
.The flashing will stop when the system detects that your head and eyes appear to be directed toward
the road.
Second Alert
.If the steering wheel light bar flashes green for too long, Super Cruise will alert the driver to take
control of steering immediately by flashing the light bar red. Also, either beeps will sound or the Safety
Alert Seat will vibrate. Touch the Settings icon on the infotainment home page. Select “Vehicle”to
display the list of available options and select ”Alert Type”and“Adaptive Cruise Go Notifier” in
“Collision/Detection Systems”.
.Take over steering, then Super Cruise will disengage.
.To re-engage Super Cruise, press]. See “Using Super Cruise” previously in this section.
Third Alert
.If the steering wheel light bar flashes red for too long, a voice command will tell you to take control of
the vehicle.
.Take control of the steering immediately; ACC and Super Cruise will disengage.
.A DIC message will indicate that Super Cruise is locked out. Super Cruise cannot be re-engaged until the
next ignition cycle.
.Continued failure to take over steering will cause the vehicle to brake to a stop and OnStar will be
called. The brake lamps and hazard warning flashers will come on.
.Take control of the vehicle and continue driving.
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Driving and Operating 267
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 size
and weight limits designated in the Trailer
Towing section, see
Trailer Towing0302.
When Super Cruise is used with vehicles
equipped with aftermarket trailer brake
controller, Super Cruise may not disengage
when manual trailer brake is applied.
Do not use Super Cruise Lane Change when
towing a trailer.
For additional information on towing a
trailer, see Trailer Towing 0302.
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:
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Driving and Operating 283
Turning the Features On or Off
PressXon the center stack to turn on or
off the Front and Rear Park Assist. The
indicator light next to the button comes on
when the features are on and turns off
when the features have been disabled.
Front and Rear Park Assist can be turned
Off, On, or On with Towbar. To view
available settings from the infotainment
screen, touch Settings > Vehicle > Comfort
and Convenience. If Park Assist is turned off
through vehicle personalization, the Park
Assist button will be disabled. To turn Park
Assist on again, select On in vehicle
personalization. The On with Towbar setting
allows Park Assist to work properly with a
trailer hitch. Some larger trailer hitches may
not be compatible.
Turn off Park Assist when towing a trailer. To turn the RPA symbols on or off, from the
infotainment screen, touch Settings >
Vehicle > Comfort and Convenience > Rear
Park Assist Symbols.
Rear Pedestrian Alert
Under certain conditions, this feature can
provide alerts for a pedestrian within the
system’s range directly behind the vehicle.
This feature only works in R (Reverse) below
12 km/h (8 mph), and detects pedestrians up
to 8 m (26 ft) away during daytime driving.
During nighttime driving, feature
performance is very limited.
Rear Pedestrian Alert Indicator
When a pedestrian is detected within the
system’s range directly behind the vehicle,
this symbol flashes amber on the
infotainment display, along with five beeps
from the rear, or if equipped, two pulses
from both sides of the driver seat. When a
pedestrian is detected close to the vehicle,
the symbol flashes red on the infotainment display, along with ten beeps from the rear,
or if equipped, seven pulses from both sides
of the driver seat.
{Warning
Rear Pedestrian Alert does not
automatically brake the vehicle. It also
does not provide an alert unless it
detects a pedestrian, and it may not
detect all pedestrians if:
.The pedestrian is not directly behind
the vehicle, fully visible to the Rear
Vision Camera (RVC), or standing
upright.
.The pedestrian is part of a group.
.The pedestrian is a child.
.Visibility is poor, including nighttime
conditions, fog, rain, or snow.
.The RVC is blocked by dirt, snow,
or ice.
.The RVC, taillamps, or back-up lamps
are not cleaned or in proper working
condition.
.The vehicle is not in R (Reverse).
(Continued)
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Driving and Operating 303
Caution
Towing a trailer improperly can damage
the vehicle and result in costly repairs
not covered by the vehicle warranty. To
tow a trailer correctly, follow the
directions in this section and see your
dealer for important information about
towing a trailer with the vehicle.
Trailering is different than just driving the
vehicle by itself. Trailering affects the
handling, acceleration, braking, and
durability of your vehicle. Successful, safe
trailering takes correct equipment, and it
has to be used properly.
The following information has many
time-tested, important trailering tips and
safety rules. Many of these are important
for your safety and that of your passengers.
Read this section carefully before pulling a
trailer.
Trailer Weight
{Warning
Never exceed the towing capacity for
your vehicle. Safe trailering requires monitoring the
weight, speed, altitude, road grades, outside
temperature, and how frequently the vehicle
is used to tow a trailer.
Trailer Weight Ratings
When towing a trailer, the combined weight
of the vehicle, vehicle contents, trailer, and
trailer contents must be below all of the
maximum weight ratings for the vehicle,
including:
.Gross Combined Weight Rating (GCWR)
.Gross Vehicle Weight Rating (GVWR)
.Maximum Trailer Weight Rating
.Maximum Trailer Tongue Weight Rating
.Gross Axle Weight Rating-Rear (GAWR-RR)
See “Weight-Distributing Hitch and
Adjustment” underTowing Equipment 0307
to determine if equalizer bars are required
to obtain the maximum trailer weight
rating.
See “Trailer Brakes” underTowing
Equipment 0307 to determine if brakes are
required based on the trailer weight. The only way to be sure the weight is not
exceeding any of these ratings is to weigh
the tow vehicle and trailer combination,
fully loaded for the trip, getting individual
weights for each of these items.
A trailering information label on the B-pillar
shows tow rating information for the
vehicle.
{Warning
You and others could be seriously injured
or killed if the trailer is too heavy or the
trailer brakes are inadequate for the load.
The vehicle may be damaged, and the
repairs would not be covered by the
vehicle warranty.
Only tow a trailer if all the steps in this
section have been followed. Ask your
dealer for advice and information about
towing a trailer.
Gross Combined Weight Rating (GCWR)
GCWR is the total allowable weight of the
completely loaded vehicle and trailer
including any fuel, passengers, cargo,
equipment, and accessories. Do not exceed
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306 Driving and Operating
Trailer Load Balance
The correct trailer load balance must be
maintained to ensure trailer stability.
Incorrect load balance is a leading cause of
trailer sway.
The trailer tongue weight (1) should be 10–
15% and fifth-wheel or gooseneck tongue
weight should be 15–25% of the total loaded
trailer weight (2). Some specific trailer types,
such as boat trailers, fall outside of this
range. Always refer to the trailer owner’s
manual for the recommended trailer tongue
weight for each trailer. Never exceed the
maximum loads for the vehicle, hitch, and
trailer.The trailer load balance percentage is
calculated as: weight (1) divided by
weight (2) times 100.
After loading the trailer, separately weigh
the trailer and then the trailer tongue and
calculate the trailer load balance percentage
to see if the weights and distribution are
appropriate for your vehicle. If the trailer
weight is too high, it may be possible to
transfer some of the cargo into your vehicle.
If the trailer tongue weight is too high or
too low, it may be possible to rearrange
some of the cargo inside of the trailer.
Do not exceed the maximum allowable
tongue weight for your vehicle. Use the
shortest hitch extension available to position
the hitch ball closer to your vehicle. This will
help reduce the effect of the trailer tongue
weight on the trailer hitch and the rear axle.
If a cargo carrier is used in the trailer hitch
receiver, choose a carrier that positions the
load as close to the vehicle as possible.
Make sure the total weight, including the
carrier, is no more than half of the
maximum allowable tongue weight for the
vehicle or 227 kg (500 lb), whichever is less.
Rear Gross Axle Weight Rating
(GAWR-RR)
The GAWR-RR is the total weight that can be
supported by the rear axle of the vehicle. Do
not exceed the GAWR-RR for the vehicle,
with the tow vehicle and trailer fully loaded
for the trip including the weight of the
trailer tongue. If using a weight-distributing
hitch, do not exceed the GAWR-RR before
applying the weight distribution spring bars.
The GAWR-RR for the vehicle is on the
Trailering Information Label.
Ask your dealer for trailering information or
assistance.
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Towing Equipment
Hitches
{Warning
In order to avoid serious injury or
property damage, always follow the hitch
manufacturer's instructions when securing
your draw bar/coupling device to the
vehicle's hitch receiver.
Ensure that the draw bar/coupling device
is secured with a locking retainer pin or
other means such that rotation of the pin
or locking mechanism will not cause the
pin to back out or loosen during use.
Failure to correctly secure the draw bar/
coupling device to the receiver can result
in separation of the hitch/receiver while
towing.
Conventional Hitch
A conventional hitch is bolted to the frame
or cross member of the tow vehicle, and is
generally rated Class 2, 3, or 4. Gooseneck Hitch
A gooseneck hitch is designed to be coupled
to a special hitch leveraging a hitch ball, and
is mounted over the rear axle in the
truck bed.
Fifth-Wheel Hitch
A fifth-wheel hitch is mounted over the rear
axle in the truck bed, and leverages a
hinged plate
—the same type of hitch
leveraged by semi trucks. Generally,
fifth-wheel hitches accommodate large
trailers with as many as one, two, or three
axles.
Always use the correct hitch equipment for
your vehicle. Crosswinds, large trucks going
by, and rough roads can affect the trailer
and the hitch.
Proper hitch equipment for your vehicle
helps maintain control of the vehicle-trailer
combination. Many trailers can be towed
using a weight-carrying hitch which has a
coupler latched to the hitch ball, or a tow
eye latched to a pintle hook. Other trailers
may require a weight-distributing hitch that
uses spring bars to distribute the trailer
tongue weight between your vehicle and
trailer axles. Fifth-wheel and gooseneck
hitches may also be used. See “MaximumTrailer Tongue Weight”
underTrailer Towing
0 302 for weight limits with various hitch
types.
Avoid sharp turns when using a step-bumper
hitch to prevent damage. Make wider turns
to prevent contact between your trailer and
your bumper.
Consider using mechanical sway controls
with any trailer. Ask a trailering professional
about sway controls or refer to the trailer
manufacturer's recommendations and
instructions.
Weight-Distributing Hitch and
Adjustment
A weight-distributing hitch may be useful
with some trailers. Use the following
guidelines to determine if a
weight-distributing hitch should be used.