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Connection Trailer Lighting Faults
Detected
The Trailering App System monitors
for electrical faults on the trailer
lights. A message about the lighting
issue will appear on the DIC. The
infotainment display will also show
the lighting issue in the Connection
Status view. Repair your trailer lights
if needed. A trailer lighting issue is
not covered by your GM warranty.
Diagnose View
Touch Diagnose to see more
information about the connection
problem.
This view will display the names of
the trailer connector pins, a graphic of
the trailer connector, and a graphic of
the back of the trailer.
Any connector pin that failed will be
amber color, and the location of the
corresponding connection will be
highlighted on the graphic of the back
of the trailer.
The Running Lights connection may
not detect partial outages. Activate
the light test to check all trailer
lamps. See“Light Test”following. Light Test
Touch Start Light Test to cycle the
trailer lights on and off to determine if
they are working. The test follows this
sequence:
1. The running lights turn on first and remain on throughout the
sequence.
2. The brake lights turn on for about two seconds.
3. The left turn signal light flashes three times.
4. The right turn signal light flashes three times.
5. The reverse lights turn on for about two seconds.
6. Steps 2–5 repeat for approximately one minute and 45 seconds,
or until the test deactivates.
Touch Stop to stop the test. The test
will automatically end after
one minute and 45 seconds.
The sequence also deactivates when
any of the following occur:
.The ignition is turned off.
.The transmission is shifted out of
P (Park).
.The brake pedal is pressed.
.The turn signal is activated.
.The hazard warning lights are
activated.
Tires
1. Trailer Tire Pressure/Temperature
Tire Pressure and Temperature
If the TTPMS sensor-to-vehicle learn
process was completed, the status
view will display the current tire
pressure and temperature of the
trailer tires related to the active
Trailer Profile. If a tire’s pressure is
low or high, the color of the pressure
value will be amber. If a sensor
malfunctions, the values are dashed
lines. If the screen displays “Service
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Tire Pressure Monitoring System”, the
vehicle needs to be taken to a dealer
for service.
Maintenance
1. List of Maintenance Reminders
2. Add a New Maintenance Reminder
The Maintenance Status view displays
reminders. Touch a reminder to edit.
Touch + New Maintenance Reminder
to go to the Select New
Reminder view.
The progress bar turns yellow when
the maintenance item reaches 90%
complete.
The progress bar turns red when the
maintenance item reaches 100%
complete. Maintenance Notifications
.Touch Service Complete to reset the
maintenance reminder.
.Touch Remind Me Later to delay
the reminder.
.Touch X next to Upcoming Alerts
(90%) to dismiss the alert. It will
not appear again.
.Touch X next to Maintenance Due
(100%) to delay the alert to the next
ignition cycle.
Always follow all of the maintenance
instructions that came with your
trailer.
Cameras
1. Rear Trailer Not Connected/ Preview, if equipped 2. Interior Trailer Not Connected/
Preview, if equipped
The Cameras Status view displays
status of trailer cameras.
Touch a connected camera to preview
the camera image.
Vehicle
1. Transmission Fluid Temperature
2. Average Fuel Economy withTrailer Profile
Average Fuel Economy
Touch to view the average fuel
economy of the vehicle while the
Trailer Profile is active.
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Transmission Temperature
View the temperature of the
transmission fluid by looking at the
graphic. The graphic will indicate a
dangerous level if the temperature is
at 130 °C–150 °C (270 °F–300 °F).
Guest Trailer Status View
Touch the Guest Trailer Profile for the
status views.
The Guest Trailer Profile Status view
shows:
.Vehicle
.Connections
.Cameras, if equipped
The Trailer Status view displays
mileage information. Touch to edit,
and follow the on-screen prompts.
Mileage and fuel economy will reset
after the trailer disconnects. The
Cameras Status view displays status of
trailer cameras. Touch a connected
camera to preview the camera image.
Accessory/No Trailer
Status View
If the Accessory/No Trailer profile is
active, trailer status information is not
available.
Checklist View
This view shows the recommended
steps to take before towing a trailer.
Touch the box next to each item if
that step has been completed.
Touch
pto access a detailed view
of each step. Within each detailed
view, touch Next and Previous to
navigate between steps.
Touch Clear All to clear the completed
statuses from all items in the current
checklist.
Custom Checklist Items
For each of the Trailer Profile
checklists, there is an option to create
custom items to view in the checklist.
The custom item will appear at the
bottom of the checklist.
Guest Trailer and No Trailer
Connected
If Guest Trailer Profile is active or if
no trailer is connected, the checklist
will show all of the checklists
associated with Custom Trailer
Profiles in addition to default
checklists.
Trailers View
Touch the Trailers tab to view,
activate, create, edit, or delete Trailer
Profiles.
If a trailer is connected, touch the
Trailer Profile name to activate a
Trailer Profile.
There can be up to five Custom Trailer
Profiles on the vehicle.
The Custom Trailer Profiles and Guest
Trailer are in order of the most
frequently used. The Accessory/No
Trailer profile is shown below the
Custom Trailer Profiles and Guest
Trailer Profile.
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All personalization features are based
on the settings for each driver in
vehicle personalization. The list of
Trailer Profiles is based on vehicle
personalization settings.
Guest Trailer
If the Guest Trailer Profile is the
active Trailer Profile, trailer detection,
connections status, theft, and the
Tow/Haul reminder alerts can be sent.
The system will not track total
mileage or fuel economy, but the
system will track trip mileage and fuel
economy if the Guest Trailer Profile is
active. The Trailer Tire Pressure
Monitoring System or maintenance
reminders cannot be set up for a
Guest Trailer Profile. The Guest Trailer
Profile cannot be edited.
Touch
pto learn more about the
Guest Trailer option.
Accessory/No Trailer
If the Accessory/No Trailer Profile is
active, alerts will not be sent and the
system will not track mileage or fuel
economy. The Trailer Tire Pressure
Monitoring System or maintenance
reminders cannot be set up for the Accessory/No Trailer Profile. The
Accessory/No Trailer profile cannot be
edited.
No Trailer Connected
When there is no trailer connected,
Trailer Profiles cannot be activated
but most options can be edited.
Trailer Brake Gain Memory
The system can memorize the brake
gain setting of a Trailer Profile or a
Guest Trailer Profile. When a Trailer
Profile or Guest Trailer Profile is
selected, and a brake gain setting is
set for that Trailer Profile, a quick
notice will appear to indicate that the
system has recalled that profile’s
brake gain setting.
If a Trailer Profile is already active
and the brake gain setting had been
set for that Trailer Profile, the quick
notice will trigger whenever the
ignition is turned on.
If there was an error in setting the
brake gain for a Trailer Profile, there
will be a notification. This pop-up will
not appear if the Guest Trailer Profile
is active or if there is no trailer
connected.Trailer brake gain should be set for a
specific trailering condition and must
be adjusted anytime vehicle loading,
trailer loading, or road surface
conditions change.
Editing a Trailer Profile
Trailer Profile View
Touch to edit any of the following
options in the Trailer Profile view:
.Trailer Name
.Towing Assistance Setup,
if equipped
.Tire Pressure Setup, if equipped
.Trailer Maintenance
.Edit Mileage
.Reset Average Fuel Economy
Touch Save to save the new value to
the Trailer Profile. Touching Back will
still save the previously entered
information.
Trailer Name
Touch to edit the Trailer Profile’s
name. Use at least one character and
no spaces. Touch Save.
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Towing Assistance Setup
A trailer should be connected to
complete this portion of profile setup.
Touch to set up towing assistance
features for the Trailer Profile. See
"Towing Assistance" for details on the
setup.
Tire Pressure Setup
Touch to set up the Trailer Tire
Pressure Monitoring System (TTPMS)
for the Trailer Profile. See“Trailer Tire
Pressure Setup ”previously in this
section for details on the setup. Also,
touch Tire Pressure Setup if the trailer
tires were rotated or if the tire
pressure sensors in the tires were
replaced for this Trailer Profile. The
vehicle will need to relearn the tire
sensors and their locations.
If TTPMS had been set up previously,
the Select Number of Sensors screen
will appear after touching Tire
Pressure Setup. If the number of
sensors has changed, select the
number and touch Next. If a new number of sensors is selected,
the Relearn Sensors pop-up will
appear. Touch Cancel to go back or
touch Relearn to overwrite the current
sensors and begin the relearning
process. See
“Trailer Tire Pressure
Setup ”previously in this section.
If number of sensors has not changed,
touch Next and the Learn sensors
screen will appear.
On the Learn Sensors screen. Touch
Relearn to overwrite the current
sensors and begin the relearning
process. See “Trailer Tire Pressure
Setup ”previously in this section.
On the Learn Sensors screen, touch
Next to go to the Edit Recommended
Tire Pressure screen.
On the Edit Recommended Tire
Pressure screen, touch a number on
the keypad to change the
recommended tire pressure for the
trailer’s tires. This will change the
number at which the vehicle displays
alerts related to trailer tire pressure.
Touch Done to return to the Trailer
Profile view.Trailer Maintenance
Touch to view a list of maintenance
reminders for the Trailer Profile.
Touch a reminder to view, reset,
delete, or edit it.
Reset Reminder
Touch Maintenance Complete in the
reminder view to reset the reminder.
On the pop-up, touch Reset to reset
the time and mileage values for the
reminder. Touch Cancel to return to
the previous view and nothing will
change.
Edit Reminder
Touch to edit the mileage or time
settings for the reminder. Touch Save
to save the new settings to the Trailer
Profile.
Delete Reminder
Touch to delete the maintenance
reminder. On the pop-up, touch Delete
to delete the reminder or touch Cancel
to return to the previous view and
nothing will change.
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New Maintenance Reminder
Touch + New Maintenance Reminder
to set up a new reminder. Suggested
reminders that were previously set will
have checkmarks next to them.
Suggested reminders that have not
been set will have empty boxes next
to them. The maximum number of
reminders is 50.
Edit Mileage
Touch to edit the Trailer Profile’s
mileage. Touch Reset to reset trailer
mileage to zero, or enter a new value
and touch Save. Touching back will
return to the Trailer Profile view.
Effect on Maintenance Reminders
If the mileage is reset or changed, and
mileage has already accumulated, any
maintenance reminders that have
been set up will be adjusted
accordingly.
Reset Average Fuel Economy
Touch to reset the average fuel
economy for the Trailer Profile. Touch
Reset to change, or touch Cancel to go
back to the previous view.Delete/Remove Trailer
Touch to remove the Trailer Profile
and all of its settings.
On the pop-up, touch Remove to
remove the Trailer Profile from the
vehicle. Touch Cancel to dismiss the
pop-up and return to the
previous view.
Remove will be displayed if there is a
connected OnStar plan active with the
vehicle. Removing a trailer profile will
remove the profile from the vehicle
but the profile will still be associated
with the user account. However,
if there is not a connected OnStar
plan then the remove button will read
DELETE and the profile will be deleted
permanently
Settings View
Within the Trailering App, touch the
Settings tab to modify the following
settings:
.Trailer Detection Alert
.Maintenance Alerts
.Theft Alert
.Tow/Haul Mode Reminder
.Trailer Length Indicator
Trailer Detection Alert
The Trailer Detection Alert setting will
be on by default. Turn it off to disable
the Trailer Detection pop-up from
displaying when a trailer is connected.
The Guest Trailer Profile will become
the active Trailer Profile, unless
another Trailer Profile is selected
manually through the Trailering App.
If this setting is disabled while a
Custom Trailer Profile is active, that
Trailer Profile will remain the active
profile until the trailer is
disconnected.
Maintenance Alerts
Touch Maintenance Alerts to view the
Maintenance Alerts settings page.
These alerts are based on the Trailer
Profile, so the settings for each Trailer
Profile must be turned on or off.
Touch a profile to view more
information or adjust the setting for
that profile.
The setting will be on by default for
each profile. All Maintenance Alerts
for that active Trailer Profile will be
received.
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Turn a setting off to not receive any
of the Maintenance Alerts when that
Trailer Profile is active.
Theft Alert
A theft alert can be set if a trailer is
connected and the alert is enabled.
When the trailer is disconnected and
the vehicle is off, an alarm will sound.
Touch Theft Alert in Settings to view
the Theft Alert settings page. These
alerts are based on the Trailer Profile,
so the settings for each Trailer Profile
must be turned on or off. Touch a
profile to view more information or
adjust the setting for that profile.
This setting will be off by default for
each Trailer Profile, including the
Guest Trailer Profile.
A smartphone will receive a
notification that the trailer related to
the selected Trailer Profile is
disconnected from the vehicle, if the
setting is on for the active Trailer
Profile, the vehicle has an OnStar or
connected service plan and the
smartphone number has been added
to the account for this notification.If the setting is turned off for a given
Trailer Profile, the smartphone will
not receive this security notification
even if the Trailer Profile is active.Tow/Haul Mode Reminder
This is a reminder to turn on the Tow/
Haul Mode when towing a trailer. See
Driver Mode Control
0267.
Touch Tow/Haul Mode Reminder in
Settings to view the Tow/Haul Mode
Reminder settings page. These alerts
are based on the Trailer Profile, so the
settings for each Trailer Profile must
be turned on or off. Touch a profile to
view more information or to adjust
the setting for that profile.
This setting will default to OFF for
each Trailer Profile, including the
Guest Trailer Profile.
If Tow/Haul Mode is off and this
setting is on for a Trailer Profile, each
time the ignition is turned on a
reminder will appear to turn on Tow/
Haul Mode when the Trailer Profile is
active. If Tow/Haul Mode is on and this
setting is on for a Trailer Profile, the
reminder will not appear when the
Trailer Profile is active.
Trailer Length Indicator
Touch Trailer Length Indicator to view
the Trailer Length Indicator settings
page. If this setting is ON a guideline
is displayed in the side mirror camera
view to indicate the rear of the
attached trailer. If this setting is OFF
the guideline will not be displayed.
This setting will default to OFF if the
trailer length indicator feature is not
set up. See "Towing Assistance" for
details on the setup.
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Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. SeeMalfunction Indicator
Lamp (Check Engine Light) 0123.
A device connected to the DLC —
such as an aftermarket fleet or
driver-behavior tracking device —
may interfere with vehicle systems.
This could affect vehicle operation
and cause a crash. Such devices
may also access information stored
in the vehicle’s systems.
Caution
Some electrical equipment can
damage the vehicle or cause
components to not work and would
not be covered by the vehicle
warranty. Always check with your
dealer before adding electrical
equipment.
{Warning
Certain mobile radio equipment,
like amplifiers and antennas used
for two-way communication, can
interfere with some vehicle systems.
Always ensure this equipment is
supplied with proper local
grounding. Follow all of the
instructions that came with the
equipment and see your GM dealer
for additional mobile radio
installation instructions. Add-on equipment can drain the
vehicle's 12-volt battery, even if the
vehicle is not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see
Servicing
the Airbag-Equipped Vehicle 076 and
Adding Equipment to the
Airbag-Equipped Vehicle 076.