2024 CHEVROLET SILVERADO EV brake

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
16702912) - 2024 - CRC - 1/17/23
308 Driving and Operating
3. Readjust Trailer Gain any time vehicleloading, trailer loading, or road surface
conditions change or if trailer wheel
lockup is noticed at any time while
towing.
Other ITBC-Related DIC Messages
TRAILER BRAKES CONNECTED: This message
will briefly display when a trailer with
electric brakes is first connected to the
vehicle. This message will automatically turn
off in about 10 seconds. This message can
be acknowledged before it automatically
turns off.
CHECK TRAILER WIRING: This message will
display if:
.The ITBC system first determines
connection to a trailer with electric brakes
and then the trailer harness becomes
disconnected from the vehicle.
‐ If the disconnect occurs while the
vehicle is stationary, this message will
automatically turn off in about
30 seconds. This message will also turn
off if it is acknowledged or if the trailer
harness is reconnected.
‐ If the disconnect occurs while the
vehicle is moving, this message will
continue until the vehicle is turned off. This message will also turn off if it is
acknowledged or if the trailer harness
is reconnected.
.There is an electrical fault in the wiring to
the trailer brakes. This message will
continue as long as there is an electrical
fault in the trailer wiring. This message
will also turn off if it is acknowledged.
To determine whether the electrical fault is
on the vehicle side or trailer side of the
trailer wiring harness connection: 1. Disconnect the trailer wiring harness from the vehicle.
2. Turn the vehicle off.
3. Wait 10 seconds, then turn the vehicle back to RUN.
4. If the CHECK TRAILER WIRING message reappears, the electrical fault is on the
vehicle side.
If the CHECK TRAILER WIRING message
only reappears when connecting the
trailer wiring harness to the vehicle, the
electrical fault is on the trailer side.
SERVICE TRAILER BRAKES OR REDUCED
TRAILER BRAKING: This message will display
if the electric trailer brake performance is
either reduced or non-functional. HOLD LAST KNOWN GAIN: This message will
display if it is no longer possible to adjust
the trailer brake gain. Trailer brakes may or
may not still be functional, and it is not
possible to adjust brake gain based on road
conditions. The trailer brakes may remain
functional until the next time the vehicle is
turned off.
TRAILER BRAKES DISABLED SERVICE
REQUIRED: This message will display when
there is a problem with the ITBC system.
If this message continues over multiple
restarts, have the vehicle serviced.
If the CHECK TRAILER WIRING, TRAILER
BRAKES DISABLED SERVICE REQUIRED,
SERVICE TRAILER BRAKE SYSTEM, or REDUCED
TRAILER BRAKING message displays while
driving, the ITBC system may not be fully
functional or may not function at all. When
traffic conditions allow, carefully pull the
vehicle over to the side of the road and turn
the vehicle off. Check the wiring connection
to the trailer and turn the vehicle back on.
If either of these messages continue, either
the vehicle or trailer needs service.

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
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Driving and Operating 309
{Warning
Driving while the trailer braking system is
malfunctioning may increase loading on
the vehicle's braking system or lead to
trailer instability. Use caution. Drive
slowly and allow for increased stopping
distances.
A GM dealer may be able to diagnose and
repair problems with the trailer. However,
any diagnosis and repair of the trailer is not
covered under the vehicle warranty. Contact
your trailer dealer for assistance with trailer
repairs and trailer warranty information.
Trailer Sway Control (TSC)
Vehicles with StabiliTrak/Electronic Stability
Control (ESC) have a Trailer Sway Control
(TSC) feature. Trailer sway is unintended
side-to-side motion of a trailer while towing.
If the vehicle is towing a trailer and the TSC
detects that sway is increasing, the vehicle
brakes are selectively applied at each wheel,
to help reduce excessive trailer sway.
If equipped with the Integrated Trailer Brake
Control (ITBC) system, and the trailer has an
electric brake system, StabiliTrak may also
apply the trailer brakes.
If TSC is enabled, the Traction Control
System (TCS)/StabiliTrak warning light will
flash on the instrument cluster. Reduce
vehicle speed by gradually removing your
foot from the accelerator. If trailer sway
continues, StabiliTrak can help slow the
vehicle down. TSC will not function if
StabiliTrak is turned off. See Traction
Control/Electronic Stability Control 0207.
{Warning
Trailer sway can result in a crash and in
serious injury or death, even if the
vehicle is equipped with TSC.
(Continued)
Warning (Continued)
If the trailer begins to sway, reduce
vehicle speed by gradually removing your
foot from the accelerator. Then pull over
to check the trailer and vehicle to help
correct possible causes, including an
improperly or overloaded trailer,
unrestrained cargo, improper trailer hitch
configuration, or improperly inflated or
incorrect vehicle or trailer tires. See
Towing Equipment0301 for trailer
ratings and hitch setup recommendations.
Aftermarket Electronic Trailer Sway
Control Devices
Some trailers may come equipped with an
electronic device designed to reduce or
control trailer sway. Aftermarket equipment
manufacturers also offer similar devices that
connect to the wiring between the trailer
and the vehicle. These devices may interfere
with the vehicle’s trailer brake systems or
other systems, including integrated
anti-sway systems, if equipped. Messages
related to trailer connections or trailer
brakes could appear on the DIC. The effects

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
16702912) - 2024 - CRC - 1/17/23
310 Driving and Operating
of these aftermarket devices on vehicle
handling or trailer brake performance is not
known.
{Warning
Use of aftermarket electronic trailer sway
control devices could result in reduced
trailer brake performance, loss of trailer
brakes, or other malfunctions, and result
in a crash. You or others could be
seriously injured or killed. Before using
one of these devices:
.Ask the device or trailer manufacturer
if the device has been thoroughly
tested for compatibility with the
make, model, and year of your vehicle
and any optional equipment installed
on your vehicle.
.Before driving, check the trailer brakes
are working properly, if equipped.
Drive the vehicle with the trailer
attached on a level road surface that
is free of traffic at about 32-40 km/h
(20-25 mph) and fully apply the
manual trailer brake apply lever. Also,
check the trailer brake lamps and
other lamps are functioning correctly.(Continued)
Warning (Continued)
.If the trailer brakes are not operating
properly at any time, or if a DIC
message indicates problems with the
trailer connections or trailer brakes,
carefully pull the vehicle over to the
side of the road when traffic
conditions allow.
Trailer Tires
Special Trailer (ST) tires differ from vehicle
tires. Trailer tires are designed with stiff
sidewalls to help prevent sway and to
support heavy loads. These features can
make it difficult to determine if the trailer
tire pressures are low only based on a visual
inspection.
Always check all trailer tire pressures before
each trip when the tires are cool. Low trailer
tire pressure is a leading cause of trailer tire
blow-outs.
If the vehicle is equipped with a trailer tire
pressure monitoring system, see the trailer
tire pressure monitoring system description
and the trailering app. Trailer tires deteriorate over time. The trailer
tire sidewall will show the week and year
the tire was manufactured. Many trailer tire
manufacturers recommend replacing tires
more than six years old.
Overloading is another leading cause of
trailer tire blow-outs. Never load your trailer
with more weight than the tires are
designed to support. The load rating is
located on the trailer tire sidewall.
Always know the maximum speed rating for
the trailer tires before driving. This may be
significantly lower than the vehicle tire
speed rating. The speed rating may be on
the trailer tire sidewall. If the speed rating is
not shown, the default trailer tire speed
rating is 105 km/h (65 mph).
Trailering App
Trailer Light App
If equipped, the Trailering App is on the
infotainment home screen.

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Status View
The Status view shows:
.Lights
.Checklists
.Brakes (If equipped)
Each section shows high-level status
information for the feature. Selecting a
section opens up a new screen with
additional information and/or options.
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. Steps 2–5 repeat 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 electric drive unit 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 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 shows dashed lines.
Touch Add to Driver Display to show trailer
brake gain and output in the Driver
Information Center (DIC).
Touch How To Set Brake Gain to view
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.

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
16702912) - 2024 - CRC - 1/17/23
312 Driving and Operating
See“Integrated Trailer Brake Control
System” section under Towing Equipment
0 301.
Trailering App
If equipped, the Trailering App is on the
Home Page of the infotainment home
screen.
If equipped, this feature allows profiles for
connected trailers to be created to view
status, to store and track trailer usage
information, and to set up towing assist
features.
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
is an option to create a profile, use a guest
profile, or select Accessory/No trailer.
When a trailer is electrically connected after
a Trailer Profile has been created, the trailer
detection pop-up appears with a list of all of
the custom Trailer Profiles made 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. Touching Accessory/No
trailer selects Accessory/No trailer as the
active Trailer Profile and dismisses the
pop-up.
Create a Trailer Profile
1. Touch Add Trailer on the trailer detection pop-up or touch + Add Trailer in the
Trailering App.
2. Follow the on-screen instructions to set up a profile.
3. After a profile is created, set up for additional trailer features may become
available, such as Tow/Haul mode
reminder, Trailer Tire Pressure
Monitoring System, maintenance
reminders, or camera views and guides.
Import a Trailer Profile 1. Touch Import on the trailer detection pop-up or touch Import in the
Trailering App.
2. Follow the on-screen instructions to import a profile.
3. After a profile is imported, it can be selected from the trailer list. The Tow/
Haul mode reminder, Brake Gain Setting
and Trailer Tire Pressure sensor learning,
if equipped, do not import.
Trailer Feature Setup
Tow/Haul Mode Reminder
To turn the Tow/Haul Mode Reminder
setting on, touch Yes. To turn it off,
touch No.
Trailer Tire Monitoring
If the TTPMS is detected, touch the Trailer
Tire Monitoring icon to set up trailer tire
monitoring.
1. Select trailer tire speed rating.
2. Enter trailer tire manufacturing date number.
3. Follow the on-screen instructions to complete the trailer tire sensor learn
process.
The trailer tire pressure sensors can transmit
up to 7 m (23 feet) from the hitch receiver of
the vehicle.
A trailer must be electrically connected to
the vehicle before starting the
sensor-to-vehicle learn process.
After selecting Start from the Learn Sensors
screen, use the Tool Method or the Manual
Method (described below) to learn each
TTPMS sensor, during which the current tire
number will be highlighted. The vehicle has

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
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Driving and Operating 313
a maximum of two minutes to detect and
label each TTPMS sensor. After each sensor
is learned, a check mark appears next to the
tire, the vehicle horn sounds, the vehicle
brake lamps flash, and all working trailer
lamps flash.
The recommended tire pressure must be
entered for the trailer tires. An alert appears
when a trailer tire's pressure is high or low.
Tool Method: A TTPMS activation tool can
be purchased separately to learn the trailer
TTPMS sensor locations.
Manual Method: Without the TTPMS
activation tool, the air pressure can be
increased or decreased in each tire for
10 seconds. Do not exceed the maximum
inflation pressure found on the tire
sidewalls. Make sure to readjust tire
pressure to the recommended level when
the process is complete.
Sensor Learning Steps
To complete the sensor-to-vehicle learn
process:1. Touch Start on the Learn Sensors screen. The horn chirps twice and the Learning
Active screen appears on the
infotainment display. 2. Start with the driver side front
trailer tire.
3. Activate the tool near the valve stem or adjust the air pressure of this tire until
the horn chirps and all working vehicle
and trailer lights flash.
The process stops without saving the
sensor locations if this step takes more
than two minutes.
4. Move to the next tire and repeat Step 3 for each sensor. The horn chirps twice
when all sensors are completed.
5. Return to the vehicle to complete the setup.
Maintenance Reminders
To set up maintenance reminders, touch the
Trailer Maintenance icon. Follow the
on-screen prompts. The maximum number
of reminders is 50.
Camera Views and Guides
To set up the trailer camera and guideline
features, if equipped, touch the Camera
Views and Guides icon.
1. Select the number of axles on the trailer.
2. Select the wheel location on the trailer (inboard or outboard). 3. Enter the trailer dimensions as prompted.
Follow the on-screen instructions to
complete setup for available features.
Certain trailer features require a compatible
trailer profile be configured and selected.
A compatible trailer is a box-type trailer
(cargo, camper, etc.) with a conventional
hitch.
Transparent Trailer Setup
If equipped, the rear trailer camera must be
mounted on the trailer and electrically
connected to the vehicle before transparent
trailer feature can be used. See Assistance
Systems for Parking or Backing 0246.
Follow the on-screen instructions to enter
the trailer dimensions.
Trailer dimensions must be in range and
transparent trailer must be calibrated
before use.
.Trailer Length: Measure from center of
coupler to furthest rear point on the
trailer.
.Trailer Total Width: Measure from the left
most edge of trailer, including the wheels,
to the right most edge.

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
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Driving and Operating 315
.Maintenance
.Checklist
.Weight
.Brakes (if equipped)
Each section shows high level status
information for the feature. Selecting a
section opens up a new screen with
additional information and/or options.
Selecting the checklist, camera,
or maintenance icon opens up the
corresponding screen.
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 turns an amber
color, and the location of the corresponding
connection is 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.”
When a trailer is connected, the Trailering
App System detects the trailer connection
using the Stop/Turn Signal lighting circuits
and alerts the driver by requesting a trailer
profile setup through the Trailering App
System on the infotainment screen. If a
default trailer profile is selected, the
Trailering App System does not display a
Trailer Detection Alert to the user when a
trailer is connected.
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 a connected trailer disconnects, a message
immediately appears on the DIC if the
vehicle is on, or the next time the vehicle is
turned on. Check your trailer connection if
needed.
Connection Problem
If any of the trailer connections are lost, a
message about the connection issue appears
on the DIC. The infotainment display also
shows 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.
A message about the lighting issue appears
on the DIC. The infotainment display also
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.

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
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316 Driving and Operating
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 manually stop the test. The
test automatically ends after one minute
and 45 seconds.
The Light Test also deactivates when any of
the following occur:
.The vehicle is turned off.
.The vehicle is shifted out of P (Park).
.The brake pedal is pressed.
.The turn signal is activated.
.The hazard warning flashers are activated.
Tires
Tire Pressure and Temperature
If the TTPMS sensor-to-vehicle learn process
was completed, the status view displays the
current tire pressure and temperature of the
trailer tires related to the active Trailer
Profile. See "Trailer Tire Monitoring"
previously in this section. If a tire pressure is
low or high, the color of the pressure value
turns amber. If a sensor malfunctions, the
values display as dashed lines.
‐ Under the Tires view, touch to set up the
TTPMS for the Trailer Profile. See “Trailer
Tire Monitoring” previously in this section
for details on the setup. Touch Sensor
Setup if the trailer tires were rotated or if
the tire pressure sensors in the tires were replaced for this Trailer Profile. The
vehicle needs to relearn the tire sensors
and their locations. See
“Trailer Tire
Monitoring” previously in this section.
‐ Touch Alerts to view all active alerts.
If the infotainment screen displays
"Service Trailer Tire Pressure Monitoring
System," the vehicle needs to be taken to
a dealer for service.
‐ Touch Settings to view trailer tire
monitoring settings. Touch Tire Speed
Alert to turn on or off the tire speed
alert. Touch Tire Age Reminder to turn on
or off tire age reminder. Touch Target Tire
Pressure to change the recommended tire
pressure for the trailer’s tires. This
changes the number at which the vehicle
displays alerts related to trailer tire
pressure.
Maintenance
On the Status view, touch the tools icon to
access a list of maintenance reminders for
the Trailer Profile.