SETTINGS GMC SIERRA 2023 Service Manual

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/18/22
Infotainment System 187
For a keyed ignition system:1. Start the vehicle.
2. For automatic transmissions, the vehicle must be in P (Park). For manual
transmissions, the vehicle must be
stopped with the parking brake set.
3. From the Settings menu, touch Vehicle and then Teen Driver.
4. Enter the PIN.
5. Touch Setup Keys or Add/Remove Teen Driver Keys. The system displays
instructions for registering or
unregistering a key. A confirmation
message displays.
Manage Settings or Teen Driver Settings
Depending on the options of your vehicle,
the following menu items may be displayed:
Buckle to Drive : When turned ON, Buckle to
Drive prevents the driver from shifting out
of P (Park) for a period of time after the
brake pedal is pressed if the driver, or on
some vehicles the detected passenger, has
not buckled their seat belt. On some
vehicles, Buckle to Drive is always ON when
Teen Driver is active and is not configurable. Audio Volume Limit :
Allows a maximum
audio volume to be set. Turn the audio
volume limit on or off. Use the arrows to
choose the maximum allowable level for the
audio volume. On some infotainment
systems, touch Set Audio Volume Limit to
choose the maximum allowable audio
volume level.
Set Audio Volume Limit : Use the arrows to
choose the maximum allowable level for the
audio volume.
Teen Driver Speed Limiter : Limits the
maximum speed of the vehicle. When the
speed limiter is turned on and the vehicle is
started with a Teen Driver key, the DIC
displays a message that the top speed is
limited.
On certain vehicles, when the Speed Limiter
is turned ON, the vehicle’s maximum
acceleration will be limited. The DIC will
display a message that the acceleration is
limited.
Teen Driver Speed Warning : Displays a
warning in the DIC when exceeding a
selectable speed. Turn the speed warning on
or off and choose the desired speed warning
level. The speed warning does not limit the speed of the vehicle. On some infotainment
systems, touch Set Teen Driver Speed
Warning to set the warning speed.
Set Teen Driver Speed Warning :
Choose the
desired speed warning level. The speed
warning does not limit the speed of the
vehicle.
SiriusXM Explicit Content Filter : Allows the
SiriusXM Explicit Content Filter to be turned
ON or OFF. When ON, the teen driver will
not be able to listen to SiriusXM stations
that contain explicit content, and the Explicit
Content Filter selection in the Audio Settings
will be unavailable for change.
When Teen Driver is Active:
.If equipped, the radio will mute when the
driver seat belt, and in some vehicles the
front passenger seat belt, is not buckled.
The audio from any device paired to the
vehicle will also be muted.
.An object placed on the front passenger
seat, such as a briefcase, handbag,
grocery bag, laptop, or other electronic
device, could cause the passenger sensing
system to falsely sense an unbuckled
front passenger and mute the radio.
If this happens, remove the object from
the seat. See Passenger Sensing System
0 70.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
198 Climate Controls
Uplevel Shown
1. Driver and Passenger Temperature Controls
2. MAX Defrost
3. Air Delivery Mode Controls
4. A/C (Air Conditioning)
5. SYNC (Synchronized Temperature) 6. Recirculation
7. Power Button
8. Fan Control
9. Rear Window Defogger (If Equipped) or
Heated Mirrors (If Equipped)
10. AUTO (Automatic Operation)
Climate Control Display
1. Driver and Passenger Temperature Settings
2. Fan Control
3. Driver and Passenger Temperature Controls
4. Sync (Synchronized Temperature)
5. Recirculation
6. Air Delivery Mode Controls
7. Auto (Automatic Operation)
8. A/C (Air Conditioning)
9. On/Off (Power)

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Climate Controls 199
The fan, air delivery mode, air conditioning,
driver and passenger temperatures, and Sync
settings can be controlled by touching
CLIMATE on the infotainment Home Page or
the climate button in the climate control
display application tray. A selection can then
be made on the front climate control page
displayed.
Climate Control Status Display
The climate control status display appears
briefly when the center stack climate
controls are adjusted.Automatic Operation
The system automatically controls the fan
speed, air delivery, air conditioning, and
recirculation in order to heat or cool the
vehicle to the desired temperature.
When AUTO is lit, all four functions operate
automatically. Each function can also be
manually set and the selected setting is
displayed. Functions not manually set will
continue to be automatically controlled,
even if the AUTO indicator is not lit.
For automatic operation:
1. Press AUTO.
2. Set the temperature. Allow the system time to stabilize. Adjust the temperature
as needed for best comfort.
To improve fuel efficiency and to cool the
vehicle faster, recirculation may be
automatically selected in warm weather.
The recirculation light will not come on
when automatically controlled. See@
under “Manual Operation” for more details.
Manual Operation
9:Turn clockwise or counterclockwise to
increase or decrease the fan speed. Press the
knob to turn the fan off. When off is selected, a small amount of air may still
come out of the outlets depending on
vehicle speed. If any buttons are pressed or
knobs are turned, the climate control system
will turn on and operate at the current
setting.
Press AUTO to return to automatic
operation.
Driver and Passenger Temperature Control :
The temperature can be adjusted separately
for the driver and passenger.
Turn the knob clockwise or counterclockwise
to increase or decrease the driver or
passenger temperature setting. On some
models, the driver side or passenger side
temperature display shows the temperature
setting increasing or decreasing.
SYNC :
Press to link the passenger
temperature setting to the driver setting.
The SYNC indicator light will turn on. When
the passenger setting is adjusted, the SYNC
indicator light will turn off.
Air Delivery Mode Control : Press
z,Y,
or
[to change the direction of the
airflow. Any combination of the three
controls can be selected. An indicator light
comes on in the selected mode button.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
204 Driving and Operating
Trailer Towing
General Towing Information . . . . . . . . . . 268
Driving Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . . . . . 268
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . 272
Towing Equipment . . . . . . . . . . . . . . . . . . . . 276
Trailer Sway Control (TSC) . . . . . . . . . . . . . 285
Trailering App . . . . . . . . . . . . . . . . . . . . . . . . . 287
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . 297
Adding a Snow Plow or Similar Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Pickup Conversion to Chassis Cab . . . . . 300
Driving Information
Driving for Better Fuel Economy
Driving habits can affect fuel mileage. Here
are some driving tips to get the best fuel
economy possible:
.Set the climate controls to the desired
temperature after the engine is started,
or turn them off when not required.
.Avoid fast starts and accelerate smoothly.
.Brake gradually and avoid abrupt stops.
.Avoid idling the engine for long periods
of time.
.When road and weather conditions are
appropriate, use cruise control.
.Always follow posted speed limits or
drive more slowly when conditions
require.
.Keep vehicle tires properly inflated.
.Combine several trips into a single trip.
.Replace the vehicle's tires with the same
TPC Spec number molded into the tire's
sidewall near the size.
.Follow recommended scheduled
maintenance.
Distracted Driving
Distraction comes in many forms and can
take your focus from the task of driving.
Exercise good judgment and do not let other
activities divert your attention away from
the road. Many local governments have
enacted laws regarding driver distraction.
Become familiar with the local laws in
your area.
To avoid distracted driving, keep your eyes
on the road, keep your hands on the
steering wheel, and focus your attention on
driving.
.Do not use a phone in demanding driving
situations. Use a hands-free method to
place or receive necessary phone calls.
.Watch the road. Do not read, take notes,
or look up information on phones or
other electronic devices.
.Designate a front seat passenger to
handle potential distractions.
.Become familiar with vehicle features
before driving, such as programming
favorite radio stations and adjusting
climate control and seat settings. Program
all trip information into any navigation
device prior to driving.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
232 Driving and Operating
Use D (Drive) and Tow/Haul Mode when
towing a trailer, carrying a heavy load,
driving on steep hills, or driving off-road.
Shift the transmission to a lower gear if the
transmission shifts too often.
Downshifting the transmission in slippery
road conditions could result in skidding. See
“Skidding”underLoss of Control 0207.
The vehicle has a shift stabilization feature
that adjusts the transmission shifting to the
current driving conditions in order to reduce
rapid upshifts and downshifts. This shift
stabilization feature is designed to
determine, before making an upshift, if the
engine is able to maintain vehicle speed by
analyzing things such as vehicle speed,
throttle position, and vehicle load. If the
shift stabilization feature determines that a
current vehicle speed cannot be maintained,
the transmission does not upshift and
instead holds the current gear. In some
cases, this could appear to be a delayed
shift, however the transmission is operating
normally. The transmission uses adaptive shift
controls. The adaptive shift control process
continually compares key shift parameters
to pre-programmed ideal shifts stored in the
transmission’s computer. The transmission
constantly makes adjustments to improve
vehicle performance according to how the
vehicle is being used, such as with a heavy
load or when the temperature changes.
During this adaptive shift control process,
shifting might feel different as the
transmission determines the best settings.
When temperatures are very cold, the
transmission's gear shifting could be delayed
providing more stable shifts until the engine
warms up. Shifts could be more noticeable
with a cold transmission. This difference in
shifting is normal.
L :
This position allows selection of a range
of gears appropriate for current driving
conditions. If equipped, see “Range Selection
Mode” underManual Mode 0232.Caution
Spinning the tires or holding the vehicle
in one place on a hill using only the
accelerator pedal may damage the
transmission. The repair will not be
covered by the vehicle warranty. If the
vehicle is stuck, do not spin the tires.
When stopping on a hill, use the brakes
to hold the vehicle in place.
Manual Mode
Range Selection Mode
Range Selection Mode helps control the
vehicle transmission and vehicle speed while
driving downhill or towing a trailer.
It permits the manual selection of a desired
gear range.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Driving and Operating 235
Caution
Do not drive on clean, dry pavement in
4
mand 4n(if equipped) for an extended
period of time. These conditions may
cause premature wear on the vehicle’s
powertrain.
Driving on clean, dry pavement in 4
mor
4
nmay:
.Cause a vibration to be felt in the
steering system.
.Cause tires to wear faster.
{Warning
If equipped with four-wheel drive, the
vehicle will be free to roll if the transfer
case is in N (Neutral), even when the shift
lever is in P (Park). You or someone else
could be seriously injured. Be sure the
transfer case is in a drive gear —2
m, 4m,
or 4
n— or set the parking brake before
placing the transfer case in N (Neutral).
See Shifting Into Park 0227.
Caution
Extended high-speed operation in 4n
may damage or shorten the life of the
drivetrain.
An engagement noise and bump is normal
when shifting between 4
nand 4mor
N (Neutral), with the engine running.
Shifting into 4
nwill turn Traction Control
and StabiliTrak/Electronic Stability Control
(ESC) off. See Traction Control/Electronic
Stability Control 0241.
Automatic Transfer Case
Two-Speed Transfer Case
If equipped, the transfer case controls are
used to shift into and out of four-wheel
drive.
To shift the transfer case, press the desired
button. The graphic in the instrument
cluster will flash while a shift is in progress.
The graphic displayed will change to indicate
the setting requested.
When the shift is complete the graphic will
stop flashing. The DIC message turns off
once the shift is complete. If the transfer
case cannot complete a shift request, it will
go back to its last chosen setting.
The settings are:
N (Neutral) : Use only when the vehicle
needs to be towed. See Recreational Vehicle
Towing 0371 or
Transporting a Disabled Vehicle 0370.
2
m(Two-Wheel Drive High) : Use for driving
on most streets and highways. The front
axle is not engaged. This setting provides
the best fuel economy.
AUTO (Automatic Four-Wheel Drive) : Use
when road surface conditions are variable.
When driving in AUTO, the front axle is
engaged, and the vehicle's power is sent to
the front and rear wheels automatically

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
238 Driving and Operating
Single Speed Transfer Case
If equipped, the transfer case controls are
used to shift into and out of four-wheel
drive.
To shift the transfer case, press the desired
button. The graphic in the instrument
cluster will flash while a shift is in progress.
The graphic displayed will change to indicate
the setting requested.
When the shift is complete the graphic will
stop flashing. The DIC message turns off
once the shift is complete. If the transfer
case cannot complete a shift request, it will
go back to its last chosen setting.The settings are:
2
m(Two-Wheel Drive High) :
Use for driving
on most streets and highways. The front
axle is not engaged. This setting provides
the best fuel economy.
4
m(Four-Wheel Drive High) : Use this
setting when extra traction is needed, such
as when driving on snowy or icy roads,
when off-roading, or when plowing snow.
AUTO (Automatic Four-Wheel Drive)
Use when road surface conditions are
variable. When driving in AUTO, the front
axle is engaged, and the vehicle's power is
sent to the front and rear wheels
automatically based on driving conditions.
This setting provides slightly lower fuel
economy than 2
m.
Shifts between 2
m, 4m, and AUTO
Any of these shifts can be made at normal
driving speed.
The actual 4x4 shift request is only made
after the button is released. The 4x4 graphic
will remain flashing until the shift request
has completed. A DIC message displays. Once the 4x4 shift has completed, the DIC
message disappears, the 4x4 graphic stops
flashing, and the current setting is indicated.
The actual 4x4 shift request is only made
after the button is released. The 4x4 graphic
will remain flashing until the shift request
has completed.
A DIC message displays. Once the 4x4 shift
has completed, the DIC message disappears,
the 4x4 graphic stops flashing, and the
current setting is indicated.
Brakes
Antilock Brake System (ABS)
The Antilock Brake System (ABS) helps
prevent a braking skid and maintain steering
while braking hard.
ABS performs a system check when the
vehicle is first driven. A momentary motor
or clicking noise may be heard while this
test is going on, and the brake pedal may
move slightly. This is normal.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Driving and Operating 247
Warning (Continued)
Complete attention is always required
while driving, and you should be ready to
take action and apply the brakes and/or
steer the vehicle to avoid crashes.
Audible or Safety Alert Seat
Some driver assistance features alert the
driver of obstacles by beeping. To view
available settings for this feature, touch the
Settings icon on the infotainment home
page. Select “Vehicle”to display the list of
available options and select “Comfort and
Convenience”.
If equipped with the Safety Alert Seat, the
driver seat cushion may provide a vibrating
pulse alert instead of beeping. To view
available settings for this feature, touch the
Settings icon on the infotainment home
page. Select “Vehicle”to display the list of
available options and select “Collision/
Detection Systems”.
Cleaning
Depending on vehicle options, keep these
areas of the vehicle clean to ensure the best
driver assistance feature performance. Driver Information Center (DIC) messages may
display when the systems are unavailable or
blocked.
.Front and rear bumpers and the area
below the bumpers
.Front grille and headlamps
.Front camera lens in the front grille or
near the front emblem
.Front side and rear side panels
.Outside of the windshield in front of the
rearview mirror
.Side camera lens on the bottom of the
outside mirrors
.Rear side corner bumpers
.Rear Vision Camera in the tailgate handle
.Rear Camera Mirror and Cargo View
Camera in the Center High-Mounted
Stoplamp
Radio Frequency
This vehicle may be equipped with driver
assistance systems that operate using radio
frequency. See Radio Frequency Statement
0 404.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Driving and Operating 251
.Rear Trailer Guidance Lines are
available in the Rear Trailer View
when the Trailering Guidance
mode is selected and the rear
trailer camera calibration has been
successfully completed. Rear Trailer
Guidance Lines show the intended
path (yellow) and the current path
(blue) of the trailer. The current
path guidance lines will converge
with the intended path guidance
lines.
7. Interior Trailer View
Displays a view of the interior of the
trailer. The feature is available when a
trailer is connected. The feature
requires user installation of an
accessory trailer camera on the
interior of the trailer per the accessory
trailer camera installation instructions
(see your dealer for accessory trailer
camera(s) and information). To view,
select Interior Trailer View on the
infotainment display when the Camera
App is active. To access this view
when in a forward gear above
12 km/h (8 mph), select CAMERA on
the infotainment display and select
Interior Trailer View. The view willclose after 8 seconds and can be
closed early by selecting X, Home
or Back.
8. Cargo Bed View/Bed Hitch View
Use the plus and minus icons on the
infotainment display to zoom in
or out.
.Cargo Bed View
Displays a view of the truck bed
and the area behind the vehicle to
assist in cargo or hitch monitoring
or hitching to a fifth wheel or
gooseneck trailer. To view, select
Cargo Bed View on the
infotainment display when the
Camera App is active. To access
this view when in a forward gear
above 12 km/h (8 mph), select
CAMERA on the infotainment
display and select Cargo Bed View.
The view will close after 8 seconds
and can be closed early by
selecting X, Home or Back. When
the Cargo Bed View is selected
when not in Drive the cargo bed
lighting is turned on automatically.
The feature can be enabled or
disabled. To view available settings
from the infotainment screen,
touch Settings > Vehicle >
Collision/Detection Systems.
.Bed Hitch View
Displays a zoomed-in view of the
bed hitch area to assist with
aligning the vehicle’s hitch with
the trailer coupler and monitoring
the trailer connection. To view,
select Bed Hitch View on the
infotainment display when the
Camera App is active. To access
this view when in a forward gear
above 12 km/h (8 mph), select
CAMERA on the infotainment
display and select Bed Hitch View.
The view will close after 8 seconds
and can be closed early by
selecting X, Home or Back. When
the Bed Hitch View is selected
when not in Drive the cargo bed
lighting is turned on automatically.
The feature can be enabled or
disabled. To view available settings
from the infotainment screen,
touch Settings > Vehicle >
Collision/Detection Systems.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Driving and Operating 253
an accessory trailer camera on the
rear exterior surface of the trailer
per the accessory trailer camera
installation instructions (see your
dealer for accessory trailer
camera(s) and information). To
view, select Picture-in-Picture Side
View on the infotainment display
when the Camera App is active. To
access this view when in a forward
gear above 12 km/h (8 mph), select
CAMERA on the infotainment
display and select Picture-in-Picture
Side View. The view can be closed
by selecting X, Home or Back.
Additional Views and Alerts
.Turn Signal Activated Views
Displays a rearward view of the left or
right side of the vehicle and trailer when
a trailer is connected. Views are provided
based on turn signal activation with the
right-side view being shown when the
right turn signal is active and the left side
view being shown when the left turn
signal is active. The feature can be
enabled or disabled.To view available
settings from the infotainment screen, touch Settings > Vehicle > Collision/
Detection Systems. The view can be
closed early by selecting X, Home or Back.
A Trailer Length Indicator Overlay is
available in the Turn Signal Activated
Views when the trailer is relatively
straight behind the vehicle and a
compatible profile is configured and
selected via the Trailering App. The
overlay will not be visible when the
position of the trailer is too far to the left
or right. The overlay can be enabled or
disabled. To view available settings from
the infotainment screen, touch Settings >
Vehicle > Collision/Detection Systems.
.Jack-Knife Detection and Alert
The vehicle may be equipped with
Jack-Knife Detection. The system will track
the position of the trailer relative to the
vehicle. As the front of the trailer
approaches the rear of the vehicle, a
warning or an alert will be displayed.
A warning indicates to the driver to
proceed with caution, an alert indicates
that a collision is imminent. Based on
vehicle equipment and user settings, the
visual warning or alert may be
accompanied by audible or safety alert
seat notifications. To view availablesettings from the infotainment screen,
touch Settings > Vehicle > Collision/
Detection Systems.
.Trailer Angle Indicator
The vehicle may be equipped with a
Trailer Angle Indicator. The Trailer Angle
Indicator gives the driver a visual
representation of the trailer’s position
relative to the vehicle. (Available only in
Reverse, Guidelines On, Rear Trailering
Views).
{Warning
Use Hitch Guidance only to help back the
vehicle to a trailer hitch or, when
traveling above 12 km/h (8 mph), to
briefly check the status of your trailer. Do
not use for any other purpose, such as
making lane change decisions. Before
making a lane change, always check the
mirrors and glance over your shoulder.
Improper use could result in serious
injury to you or others.