2023 GMC CANYON trailer

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16510661) - 2023 - CRC - 11/29/22
244 Driving and Operating
Light Test
Select“Start” to cycle the trailer lamps 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. Repeat steps 2–5 for about one minute and 45 seconds, or until the test
deactivates
Select “Stop” to stop the test.
The sequence also deactivates when any of
the following occur:
.The vehicle 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. Checklist
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 > to 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.
Brakes
If equipped with Integrated Trailer Brake
Controller (ITBC) system and if the
connected trailer is equipped with electric
brakes or electric over hydraulic brakes, this
view will display the current state of the
brakes including brake gain setting and
output. If no electric brakes are detected or
if no trailer is connected, this view will
display the last known brake gain setting
and the output will be shown as dashed
lines.
Touch Show In Cluster to show trailer brake
gain and output in the Driver Information
Center (DIC) Touch How To Set Brake Gain to access
detailed steps to set trailer brake gain.
The Trailering App System will show any
brake issues reported by the trailer brake
controller in the brakes view. Trailer
diagnosis and service may be required.
Repair your trailer brakes if needed. A trailer
braking issue is not covered by your GM
warranty.
See
“Integrated Trailer Brake Control
System” section under Towing Equipment
0 236.
Trailering App
If equipped, the Trailering App is on the
infotainment home screen.
This feature creates profiles for connected
trailers to view the status, and store and
track trailer usage information.
The Trailering App welcome page appears
when the Trailering App is opened for the
first time from the infotainment home
screen.
When a trailer is electrically connected and
a trailer profile has not been created, there
will be an option to create a profile, use a
guest profile, or select Accessory.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16510661) - 2023 - CRC - 11/29/22
Driving and Operating 245
After a Trailer Profile has been created and
the trailer is electrically connected, the
trailer detection pop-up appears with a list
of all of the custom Trailer Profiles stored
on the vehicle. To load an existing Trailer
Profile, select one of the Trailer Profiles
listed or load the Guest Trailer Profile by
selecting GUEST TRAILER. Selecting Accessory
as the active Trailer Profile dismisses the
pop-up. Shifting the vehicle from P (Park)
selects Guest Trailer as the active Trailer
Profile and dismisses the pop-up.
Create a Trailer Profile
Touch Add Trailer on the trailer detection
pop-up or touch + Add New Trailer in the
Trailering App.
After a profile is created, set up for
additional trailer features may become
available through the sections shown in the
Status View. See“Status View”below.
Import a Trailer Profile
Touch Import on the trailer detection pop-up
or touch Import in the Trailering App.
Follow on-screen instructions to import a
profile. After a profile is imported, it can be selected
from the trailer list. If equipped, the Tow/
Haul Mode reminder and Brake Gain Setting
do not import.
Status View
If a trailer is connected, the Status view
shows status information for the active
trailer profile.
If no trailer is connected, the Status view
shows the last trailer profile with a status of
Not Connected.
The Status view shows:
.Lights
.Maintenance
.Checklists
.Brakes (If equipped)
Scroll right or left to see more options. The Status view displays mileage and fuel
economy information.
Each section shows high level status
information for the feature. Selecting a
section opens up a new screen with
additional information and/or options.
Lights
This view displays 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 fails will be an
amber color with the corresponding location
highlighted on the graphic of the back of
the trailer.
If a trailer connection is detected without
any faults, the view displays No Issues
Found.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16510661) - 2023 - CRC - 11/29/22
246 Driving and Operating
When a trailer is connected, the Trailering
App System detects the trailer connection
using the Stop/Turn Signal lighting circuits
and requests the driver to setup a trailer
profile through the Trailering App System on
the infotainment screen. When a trailer is
connected and a default trailer profile is
selected, the Trailering App System will not
display a Trailer Detection Alert to the user.
When a trailer is connected and the vehicle
is off, the Trailering App System periodically
pulses the lighting circuits of the trailer to
verify it is still connected. The trailer lights
may periodically flash as a result of this
trailer connection detection. These flashes
may be more visible in dark ambient light
environments. The flashing or flickering
lights are a normal condition and the
Trailering App System has built-in
protections to prevent the battery from
draining. When Theft Alert is enabled, the
frequency and pattern of this flashing
changes.
If the trailer disconnects when the vehicle is
on, a message appears on the Driver
Information Center (DIC) immediately. If the
trailer disconnects when the vehicle is off,the next time the vehicle is turned on the
message on the DIC displays. Check your
trailer connection if needed.
Connection Problem
If any of the trailer connections are lost, a
message appears on the DIC. The
infotainment screen will also show the
connection issue in the Lights Status view.
Connection Trailer Lighting Faults Detected
The Trailering App System monitors for
electrical faults on the trailer lights. If there
is a lighting issue, a message appears on the
DIC. The infotainment screen shows the
lighting issue in the Lights Status view.
Repair your trailer lights if needed. A trailer
lighting issue is not covered by your GM
warranty.
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 on minute and 45 seconds, or until the test
deactivates.
Touch Stop to manually stop the test.
The sequence also deactivates when any of
the following occur:
.The vehicle 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.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16510661) - 2023 - CRC - 11/29/22
Driving and Operating 247
Maintenance
.Touch to view a list of maintenance
reminders for the Trailer Profile.
.The Maintenance Status view displays
reminders for the Trailer Profile. Touch a
reminder to view, reset, delete, or edit it.
.The progress bar turns yellow when the
maintenance item reaches 90% complete.
.The progress bar turns red when the
maintenance item reaches 100%
complete.
.Touch New Reminder to add a new
maintenance reminder.
Suggested reminders that were previously
set will not appear. Suggested reminders
that have not been set have empty boxes
next to them. The maximum number of
reminders is 50. Maintenance Notifications
1. Touch Reset to reset time and mileage values for the reminder.
2. Touch Remind Me Later to delay the reminder.
3. If an Upcoming Alert (90%) is dismissed, it does not appear again.
4. If a Maintenance Due Alert (100%) is dismissed, it appears when the vehicle is
turned off and back on again.
Always follow the maintenance instructions
that came with your trailer.
Checklist View
This view shows the recommended steps to
take before towing a trailer. 1. Touch the box next to each item if that step has been completed. 2. Touch
4to access a detailed view of each
step. Within each detailed view, touch
Next and Previous to navigate between
steps.
3. 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
appears at the bottom of the checklist.
Guest Trailer
If a Guest Trailer Profile is active, the
checklist shows a limited, basic checklist is
available.
No Trailer Connected
If no trailer is connected, the checklist shows
the last selected trailer profile.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16510661) - 2023 - CRC - 11/29/22
248 Driving and Operating
Brakes
If equipped with Integrated Trailer Brake
Controller (ITBC) system and if the
connected trailer is equipped with electric
brakes or electric over hydraulic brakes, this
view displays the current state of the brakes
including brake gain setting and output.
If no electric brakes are detected or if no
trailer is connected, this view displays the
last known brake gain setting and the
output shown as dashed lines.
Touch Show In Cluster to show trailer brake
gain and output in the DIC.
Touch How To Set Brake Gain to access
detailed steps to set trailer brake gain.
The Trailering App System shows any brake
issues reported by the trailer brake
controller in the brakes view. Trailer
diagnosis and service may be required.Repair your trailer brakes if needed. A trailer
braking issue is not covered by your GM
warranty.
See
“Integrated Trailer Brake Control
System” underTowing Equipment 0236 for
more information on the vehicle trailer
brakes.
Guest Trailer Status View
If the Guest Trailer Profile is active, the
Status view shows:
.Lights
.Checklist
.Brakes (If equipped)
The Trailer Status view displays mileage and
fuel economy information. Mileage and fuel
economy resets after the trailer disconnects.
Accessory Status View
If the Accessory profile is active, trailer
status information is not available.
Trailers View
Touch the trailer profile icon/name in the
Status View 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 profile is shown below the
Custom Trailer Profiles and Guest Trailer
Profile.
Guest Trailer
If the Guest Trailer Profile is the active
Trailer Profile, trailer detection, lights/
connections status, theft, and the Tow/Haul
reminder alerts can be sent. The system
does not track total mileage or fuel
economy, but the system tracks trip mileage
and fuel economy if the Guest Trailer Profile
is active. The maintenance reminders cannot
be set up for a Guest Trailer Profile. The
Guest Trailer Profile cannot be edited.
Accessory
If the Accessory Profile is active, alerts will
not be sent and the system will not track
mileage or fuel economy. Maintenance
reminders cannot be set up for the
Accessory profile. The Accessory profile
cannot be edited.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16510661) - 2023 - CRC - 11/29/22
Driving and Operating 249
Trailer Brake Gain Memory
The system can store 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, the system will recall
the stored brake gain value.
If a Trailer Profile is already active and the
brake gain setting has been set for that
Trailer Profile, the system will recall the
brake gain value whenever the vehicle is
turned on.
If there is an error in setting the brake gain
for a Trailer Profile, a pop-up displays. If the
Guest Trailer Profile is active or there is no
trailer connected, the pop-up does not
appear.
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
Touch the trailer profile icon/name in the
Status View to access the Trailer
Profile view:
.Trailer Name
.Total Mileage
.Average Fuel Economy
.Delete/Remove Trailer
.Set as Default Trailer
.Tow/Haul Mode Reminder Alert
.Theft Alert
.Maintenance Alert
Trailer Name
Touch to edit the Trailer Profile name. Use
at least one character and no spaces. Total Mileage
Touch to edit the Trailer Profile mileage.
Touch Reset to reset trailer mileage to zero,
or enter a new value and touch Save.
Effect on Maintenance Reminders
If the mileage is reset or changed, and has
already accumulated, any maintenance
reminders that have been set up will be
adjusted accordingly.
Average Fuel Economy
Touch to reset the average fuel economy for
the Trailer Profile. Touch Reset to reset fuel
economy.
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 is displayed if there is a connected
OnStar plan active with the vehicle.
Removing a Trailer Profile removes the
profile from the vehicle, but the profile will
still be associated with the user account.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16510661) - 2023 - CRC - 11/29/22
250 Driving and Operating
However, if there is not a connected OnStar
plan, then the remove button will read
DELETE and the profile deletes permanently.
Set as Default Trailer
Touch Set as Default Trailer to select the
current profile as default.
The default Trailer Profile automatically
selects each time a new connection is
detected. The Trailer Detection Alert will no
longer appear.
If this setting is turned off, the current
Trailer Profile is not the default trailer.
Tow/Haul Mode Reminder
This is a reminder to turn on the Tow/Haul
Mode when towing a trailer. SeeTow/Haul
Mode 0178.
Touch Tow/Haul Mode Reminder to turn
on/off Tow/Haul Mode reminders for the
selected profile. These alerts are based on
the Trailer Profile, so the settings for each
Trailer Profile must be turned on or off.
This setting defaults 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 vehicle
is turned on, a reminder appears 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 does
not appear when the Trailer Profile is active.
Theft Alert
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 sounds.
Touch Theft Alert to turn on/off Theft Alerts
for the selected profile. These alerts are
based on the Trailer Profile, so the settings
for each Trailer Profile must be turned on
or off.
This setting is off by default for each Trailer
Profile, including the Guest Trailer Profile.
If the setting is on for the active Trailer
Profile, the vehicle has an OnStar or
connected service plan, and your
smartphone number has been added to the
account, your smartphone will receive a
notification that the selected Trailer has
disconnected from the vehicle.
If the setting is turned off for a given Trailer
Profile, your smartphone will not receive the
notification even if the Trailer Profile is
active.
Maintenance Alerts
Touch Maintenance Alert to turn on/off
Maintenance Alerts for the selected profile.
These alerts are based on the Trailer Profile,
so the settings for each Trailer Profile must
be turned on or off.
The setting is on by default for each profile.
All Maintenance Alerts for that active Trailer
Profile will be received.
Turn this setting off to dismiss Maintenance
Alerts when that Trailer Profile is active.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-16510661) - 2023 - CRC - 11/29/22
Vehicle Care 265
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 and have the
vehicle serviced.
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.
If No Steam Is Coming from the Engine
Compartment
If an engine overheat warning is displayed
but no steam can be seen or heard, the
problem may not be too serious. Sometimes
the engine can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
If the overheat warning is displayed with no
sign of steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the highest fan
speed. Open the windows as necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or N (Neutral), and
let the engine idle.
If the engine coolant temperature gauge is
no longer in the overheat zone, the vehicle
can be driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a safe
distance from the vehicle in front. If the
warning does not come back on, continue to
drive normally and have the cooling system
checked for proper fill and function. If the warning continues, pull over, stop, and
park the vehicle right away.
If there is no sign of steam, idle the engine
for three minutes while parked. If the
warning is still displayed, turn off the
engine until it cools down.
Engine Fan
If the vehicle has a clutched engine cooling
fan, when the clutch is engaged, the fan
spins faster to provide more air to cool the
engine. In most everyday driving conditions,
the fan is spinning slower and the clutch is
not fully engaged. This improves fuel
economy and reduces fan noise. Under
heavy vehicle loading, trailer towing, and/or
high outside temperatures, the fan speed
increases as the clutch more fully engages,
so an increase in fan noise may be heard.
This is normal and should not be mistaken
as the transmission slipping or making extra
shifts. It is merely the cooling system
functioning properly. The fan will slow down
when additional cooling is not required and
the clutch disengages.
This fan noise may also be heard when
starting the engine. It will go away as the
fan clutch partially disengages.