2024 CHEVROLET SILVERADO EV service

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
16702912) - 2024 - CRC - 1/17/23
Driving and Operating 297
Pulling the Trailer from the Water1. Press and hold the brake pedal.
2. Start the vehicle and shift into D (Drive) or L (Low).
3. Release the parking brake.
4. Let up on the brake pedal.
5. Drive slowly until the tires are clear of the chocks.
6. Stop and have someone pick up and store the chocks.
7. Slowly pull the trailer from the water.
Caution
If the vehicle tires begin to spin and the
vehicle begins to slide toward the water,
remove your foot from the accelerator
pedal and apply the brake pedal. Seek
help to have the vehicle towed up
the ramp.
Maintenance when Trailer Towing
The vehicle needs service more often when
used to tow trailers. See Maintenance
Schedule 0389. It is especially important to
check the cooling system and brake system
before and during each trip. Check periodically that all nuts and bolts on
the trailer hitch are tight.
Trailer Towing
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 means changes in
handling, acceleration, braking, and
durability. 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 0301
to determine if equalizer bars are required
to obtain the maximum trailer weight
rating.

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
16702912) - 2024 - CRC - 1/17/23
Driving and Operating 303
MeasurementHeight Example 1500 (mm)
H1 1000
H2 1050
H2-H1 50
(H2-H1)/2 25
H2- [(H2-H1)/2] 1025
Adjusting the Equalizer Bars with Air
Suspension 1. Adjust the vehicle air suspension to Normal height. See Air Suspension0211.
2. Position the truck so that the trailer is ready to connect. Keep the trailer
detached.
3. Enable Service Mode on the vehicle air suspension in the center infotainment
screen under Settings > Vehicle >
Suspension. 4. Measure the height of the top of the
front wheel opening at the fender to the
ground (H1).
5. Attach the vehicle to the trailer. Do not attach weight distribution bars at
this time.
6. Measure the height of the top of the front wheel opening on the fender to
the ground (H2). 7. Install and adjust the tension in the
weight distributing bars per the
manufacturer's recommendations so that
the height of the front fender is
approximately H1+[(H2-H1)/2] (1/2
between the two measured ride heights,
above the primary ride height {H1}).
8. Disable Service Mode on the vehicle air suspension.
9. Air suspension will automatically adjust ride height following Step 8.
10. Visually inspect the trailer and weight-distributing hitch to ensure that
the manufacturer’s recommendations
have been met.

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
16702912) - 2024 - CRC - 1/17/23
Driving and Operating 307
TRAILER GAIN:
Press a Trailer Gain button to recall the
current Trailer Gain setting. Each press and
release of the gain buttons will change the
Trailer Gain setting. Press the Trailer
Gain (+) or (−) to adjust. Press and hold to
continuously adjust the Trailer Gain. To turn
the output to the trailer off, adjust the
Trailer Gain setting to 0.0. This setting can
be adjusted from 0.0 to 10.0 with a trailer
connected or disconnected.
TRAILER OUTPUT: This displays anytime a
trailer with electric brakes is connected.
Output to the trailer brakes is based on the
amount of vehicle braking present and
relative to the Trailer Gain setting. Output is
displayed from 0–100% for each gain
setting.
The Trailer Output will indicate“- - - - - -”on
the Trailer Brake Display Page whenever the
following occur:
.No trailer is connected
.A trailer without electric brakes is
connected, no DIC message will display
.A trailer with electric brakes has become
disconnected, a CHECK TRAILER WIRING
message displays on the DIC
.There is a fault present in the wiring to
the trailer brakes, a CHECK TRAILER
WIRING message displays on the DIC
.The ITBC system is not working due to a
fault, a SERVICE TRAILER BRAKE SYSTEM
message displays in the DIC
Manual Trailer Brake Apply Lever
Slide this lever right to apply the trailer’s
electric brakes independent of the vehicle’s
brakes. Use this lever to adjust Trailer Gain
to achieve the proper power output to the
trailer brakes. This lever may also be used
to request additional trailer braking at any
time. The trailer and vehicle brake lamps
will come on when either vehicle brakes or
manual trailer brakes are applied and
properly connected.
Trailer Gain Adjustment Procedure
Trailer Gain should be set for a specific
trailering condition and it must be
readjusted anytime vehicle loading, trailer
loading, or road surface conditions change.
{Warning
Trailer brakes that are over-gained or
under-gained may not stop the vehicle
and the trailer as intended and can result (Continued)
Warning (Continued)
in a crash. Always follow the instructions
to set the Trailer Gain for the proper
trailer stopping performance.
To adjust Trailer Gain for each towing
condition: 1. Drive the vehicle with the trailer attached on a level road surface
representative of the towing condition
and free of traffic at about 32–40 km/h
(20–25 mph) and fully apply the Manual
Trailer Brake apply lever. Adjusting
Trailer Gain at speeds lower than
32–40 km/h (20–25 mph) may result in
an incorrect gain setting.
2. Adjust the Trailer Gain, using the Trailer Gain adjustment buttons, to just below
the point of trailer wheel lockup,
indicated by trailer wheel squeal or tire
smoke when a trailer wheel locks. Trailer
wheel lockup may not occur if towing a
heavily loaded trailer. In this case, adjust
the Trailer Gain to the highest allowable
setting for the towing condition.

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-
16702912) - 2024 - CRC - 1/17/23
Driving and Operating 311
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
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.

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
16702912) - 2024 - CRC - 1/17/23
318 Driving and Operating
Custom Checklist Items
For each of the Trailer Profile checklists,
there is an option to create custom items to
view in the checklist. Custom checklist items
are displayed at the end of the default
checklist items.
Guest Trailer and No Trailer Connected
If a Guest Trailer Profile is active, or if no
trailer is connected, this view shows the
default checklist.
Weight
.Touch to turn on or off the GCW Alert.
.When on, an alert displays in the DIC
when the combined weight of the vehicle
and trailer exceed the vehicle's Gross
Combined Weight Raring (GCWR). For
more information on the Gross Combined
Weight (GCW) Alert, seeTrailer Towing
0 297.
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 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. Trailer
brake repairs are not covered by your GM
warranty.
See “Integrated Trailer Brake Control
System” section under Towing Equipment
0 301.
Guest Trailer Status View
If the Guest Trailer Profile is active, the
Status view shows:
.Lights
.Cameras
.Checklist
.Weight
.Brakes (if equipped) The Trailer Status view displays mileage
information. The mileage value resets when
the trailer is disconnected from the vehicle.
Accessory/No Trailer Status View
If the Accessory/No Trailer profile is active,
trailer status information is not available.
Trailers View
Touch the trailer profile icon 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.
The Trailering App can save a maximum of
five trailer profiles
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.
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, but the system
tracks trip mileage if the Guest Trailer

Chevrolet Silverado EV Owner Manual (GMNA-Localizing-U.S./Canada-
16702912) - 2024 - CRC - 1/17/23
320 Driving and Operating
Delete/Remove Trailer
Touch to remove the Trailer Profile and all
of its settings.
On the pop-up, touch Remove to delete the
Trailer Profile. Touch Cancel to dismiss the
pop-up and return to the previous view.
When selecting Remove, it will display if
there is a connected OnStar plan active with
the vehicle. Removing a trailer profile
deletes the profile from the vehicle but the
profile still associates with the user account.
However, if there is not a connected OnStar
plan and Remove is selected, DELETE
displays and the profile deletes
permanently.
Set as Default Trailer
Touch Set as Default Trailer to select the
current profile as the default trailer profile.
The default trailer profile automatically is
selected each time a new connection is
detected. The Trailer Detection Alert will no
longer appear on the infotainment screen.
If this setting is turned off, the current
trailer profile is not the default trailer.GCW Alerts
Touch GCW Alert to enable/disable the GCW
Alert 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.
Turn this setting off to stop receiving GCW
Alerts when that Trailer Profile is active.
Theft Alert
If Theft Alerts are enabled, an alarm will
sound anytime the trailer is disconnected
from the vehicle while the vehicle is off.
Touch Theft Alert to enable/disable 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 defaults for each Trailer Profile,
including the Guest Trailer Profile.
A smartphone receives 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
When the vehicle detects a new trailer
connection, and if the Tow/Haul Mode
Reminder setting is enabled, a courtesy
message displays reminding you to turn on
Tow/Haul mode if appropriate. See
Driver
Mode Control 0209.
Touch Tow/Haul Mode Reminder to turn on/
off for the selected profile. The status of
Tow/Haul Mode Reminder Alerts are specific
to each trailer profile. You must specify
whether you want to enable theft alerts for
each trailer profile.
If Tow/Haul mode is off and Tow/Haul
Mode Reminder 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 Tow/Haul Mode
Reminder is on for a Trailer Profile, the
reminder does not appear when the Trailer
Profile is active.