
GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/13/22
6 Introduction
1. Tow/Haul Mode (On Some Models). SeeDriver Mode Control 0238.
Automatic Transfer Case Control (If
Equipped). See Four-Wheel Drive 0228.
Driver Mode Control 0238 (If Equipped).
2. Air Vents 0196.
3. Turn Signal Lever. See Turn and
Lane-Change Signals 0147.
Windshield Wiper/Washer 0106.
4. Head-Up Display (HUD) 0135 (If
Equipped).
5. Instrument Cluster (Base Level) 0112 or
Instrument Cluster (Uplevel) 0113.
6. Shift Lever. See Automatic Transmission
0 223.
Range Selection Mode. See Manual Mode
0 226.
7. Light Sensor. See Automatic Headlamp
System 0145.
8. Infotainment Controls. See Overview
(Uplevel Radio) 0155 or
Overview (Base Radio) 0154.
9. Upper Glove Box. See Glove Box099. 10. Lower Glove Box. See
Glove Box099.
11. Climate Control Systems 0191 (If
Equipped).
Dual Automatic Climate Control System
0 193 (If Equipped).
12.
XPark Assist Switch (If Equipped). See
Assistance Systems for Parking or Backing
0 253.
5Power Release Tailgate (If
Equipped). See Tailgate024.
|Hazard Warning Flashers 0146.
gTraction Control/Electronic Stability
Control 0236.
-DC/AC Switch. See Power Outlets
0 107.
@Lane Departure Warning (LDW) 0270
(If Equipped).
5Hill Descent Control Switch (If
Equipped). See Hill Descent Control (HDC)
0 237.
jPower Assist Steps 031 (If
Equipped).
LExpress Window Down Button (If
Equipped). See Power Windows 042.
Tow/Haul Mode 0227 (On Some
Models).
Exhaust Brake (If Equipped). See Duramax
Diesel Supplement.
Power Take-Off (PTO) (If Equipped). See
Duramax Diesel Supplement.
13. Power Outlet (Alternating Current) (If Equipped). See Power Outlets0107.
14. Power Outlets 0107.
15. USB Port 0163.
16. Trailer Brake Control Panel (If Equipped). See“Integrated Trailer Brake Control
System” underTowing Equipment 0284.
17. ENGINE START/STOP. See Ignition
Positions 0216.
18. Steering Wheel Controls 0156 (If
Equipped).
Driver Information Center (DIC) Controls.
See Driver Information Center (DIC) (Base
Level) 0131 or
Driver Information Center (DIC) (Uplevel)
0 133.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/13/22
Introduction 9
1.Head-Up Display (HUD) 0135 (If
Equipped).
2. Air Vents 0196.
3. Turn Signal Lever. See Turn and
Lane-Change Signals 0147.
Windshield Wiper/Washer 0106.
4. Instrument Cluster (Base Level) 0112 or
Instrument Cluster (Uplevel) 0113.
5. Shift Lever. See Automatic Transmission
0 223.
Range Selection Mode. See Manual Mode
0 226.
6. Infotainment System. See Overview
(Uplevel Radio) 0155 or
Overview (Base Radio) 0154.
7. Light Sensor. See Automatic Headlamp
System 0145.
Vehicle Alarm System. See Vehicle
Security 032.
8. Upper Glove Box. See Glove Box099.
9. Lower Glove Box. See Glove Box099.
10. Upper Glove Box Button. See Glove Box
0 99. 11. Power Release Tailgate (If Equipped). See
Tailgate 024.
Hazard Warning Flashers 0146.
Traction Control/Electronic Stability
Control 0236.
Hill Descent Control Switch (If Equipped).
See Hill Descent Control (HDC) 0237.
Power Assist Steps 031 (If Equipped).
Express Window Down Button (If
Equipped). See Power Windows 042.
Tow/Haul Mode 0227 (On Some
Models).
Exhaust Brake (If Equipped). See Duramax
Diesel Supplement.
Power Take-Off (PTO) (If Equipped). See
Duramax Diesel Supplement.
12. USB Port 0163.
13. Climate Control Systems 0191 (If
Equipped).
Dual Automatic Climate Control System
0 193 (If Equipped).
Heated and Ventilated Front Seats 054
(If Equipped).
Heated Steering Wheel 0105 (If
Equipped). 14. Front Center Console Storage.
15.
Cupholders 0100.
16. Trailer Brake Control Panel (If Equipped). See“Integrated Trailer Brake Control
System” underTowing Equipment 0284.
17. ENGINE START/STOP. See Ignition
Positions 0216.
18. Steering Wheel Controls 0156.
Driver Information Center (DIC) Controls.
See Driver Information Center (DIC) (Base
Level) 0131 or
Driver Information Center (DIC) (Uplevel)
0 133.
19. Horn 0106.
20. Steering Wheel Adjustment 0105 (Out
of View).
21. Hood Release. See Hood0312.
22. Cruise Control 0239.
Adaptive Cruise Control (Camera) 0241
(If Equipped).
Forward Collision Alert (FCA) System
0 263 (If Equipped).

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/13/22
12 Introduction
1.Air Vents 0196.
2. Head-Up Display (HUD) 0135 (If
Equipped).
3. Turn Signal Lever. See Turn and
Lane-Change Signals 0147.
Windshield Wiper/Washer 0106.
4. Instrument Cluster (Base Level) 0112 or
Instrument Cluster (Uplevel) 0113.
5. Shift Lever. See Automatic Transmission
0 223.
Range Selection Mode. See Manual Mode
0 226.
6. Infotainment System. See Overview
(Uplevel Radio) 0155 or
Overview (Base Radio) 0154.
7. Light Sensor. See Automatic Headlamp
System 0145.
Vehicle Alarm System. See Vehicle
Security 032.
8. Upper Glove Box Button. See Glove Box
0 99.
9. Upper Glove Box. See Glove Box099.
10. Lower Glove Box. See Glove Box099. 11.
Climate Control Systems 0191 (If
Equipped).
Dual Automatic Climate Control System
0 193 (If Equipped).
Heated and Ventilated Front Seats 054
(If Equipped).
Heated Steering Wheel 0105 (If
Equipped).
12. Power Release Tailgate (If Equipped). See Tailgate 024.
Hazard Warning Flashers 0146.
Traction Control/Electronic Stability
Control 0236.
Hill Descent Control Switch (If Equipped).
See Hill Descent Control (HDC) 0237.
Power Assist Steps 031 (If Equipped).
Express Window Down Button (If
Equipped). See Power Windows 042.
Tow/Haul Mode 0227 (On Some
Models).
Exhaust Brake (If Equipped). See Duramax
Diesel Supplement.
Power Take-Off (PTO) (If Equipped). See
Duramax Diesel Supplement. 13. Front Center Console Storage.
14.
USB Port 0163.
15. Cupholders 0100.
16. Trailer Brake Control Panel (If Equipped). See“Integrated Trailer Brake Control
System” underTowing Equipment 0284.
17. ENGINE START/STOP. See Ignition
Positions 0216.
18. Steering Wheel Controls 0156.
Driver Information Center (DIC) Controls.
See Driver Information Center (DIC) (Base
Level) 0131 or
Driver Information Center (DIC) (Uplevel)
0 133.
19. Horn 0106.
20. Hood Release. See Hood0312.
21. Steering Wheel Adjustment 0105 (Out
of View).
22. Cruise Control 0239.
Adaptive Cruise Control (Camera) 0241
(If Equipped).
Forward Collision Alert (FCA) System
0 263 (If Equipped).

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Seats and Restraints 55
Press the button once for the highest
setting. With each press of the button, the
seat will change to the next lower setting,
and then to the off setting. The indicator
lights next to the buttons indicate three for
the highest setting and one for the lowest.
If the heated seats are on high for
30 minutes, their level will automatically be
lowered.
Auto Heated and Ventilated Seats
When the vehicle is on, this feature,
if enabled, will automatically activate the
heated or ventilated seats at the level
required by the vehicle’s interior
temperature.
The active high, medium, low, or off heated
or ventilated seat level will be indicated by
the manual heated or ventilated seat
buttons on the center stack. Use the manual
heated or ventilated seat buttons on the
center stack to turn auto heated or
ventilated seats off. If the passenger seat is
unoccupied, the auto heated or ventilated
seats feature will not activate that seat.
If equipped with a heated steering wheel,
the auto heated steering wheel activation
will follow the heated seat auto activation
and the heated wheel indicator will follow
the state of the steering wheel heat.To enable or disable auto heated or
ventilated seats, select Settings > Vehicle >
Climate and Air Quality > Auto Cooled or
Auto Heated Seats > ON or OFF.
Remote Start Heated and Ventilated Seats
If equipped, the heated seats will turn on
automatically during a remote start if it is
cold outside and the ventilated seats will
turn on automatically if it is hot outside.
If equipped, the heated steering wheel will
turn on automatically during a remote start
if it is cold outside. The heated and
ventilated seat indicators and heated
steering wheel indicator may come on
during this operation.
The heated and ventilated seats and heated
steering wheel may cancel when the vehicle
is started. These features can be manually
selected after the vehicle is turned on.
The temperature performance of an
unoccupied seat may be reduced. This is
normal.
To enable or disable remote start heated or
ventilated seats, select Settings > Vehicle >
Remote Lock, Unlock, and Start > Remote
Start Auto Heat Seats or Remote Start Auto
Cool Seats > ON or OFF. See
Remote Vehicle
Start 021.Rear Seats
Rear Seat Reminder
If equipped, the message REAR SEAT
REMINDER LOOK IN REAR SEAT displays
under certain conditions indicating there
may be an item or passenger in the rear
seat. Check before exiting the vehicle.
This feature will activate when a second row
door is opened while the vehicle is on or up
to 10 minutes before the vehicle is turned
on. There will be an alert when the vehicle
is turned off. The alert does not directly
detect objects in the rear seat; instead,
under certain conditions, it detects when a
rear door is opened and closed, indicating
that there may be something in the
rear seat.
The feature is active only once each time
the vehicle is turned on and off, and will
require reactivation by opening and closing
the second row doors. There may be an
alert even when there is nothing in the rear
seat; for example, if a child entered the
vehicle through the rear door and left the
vehicle without the vehicle being shut off.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
56 Seats and Restraints
The feature can be turned on or off. Select
Settings > Vehicle > Rear Seat Reminder >
ON or OFF.
Folding the Rear Seat Cushion
Either side of the rear seat cushion can be
folded up for added cargo space.
Caution
Folding a rear seat with the seat belts
still fastened may cause damage to the
seat or the seat belts. Always unbuckle
the seat belts and return them to their
normal stowed position before folding a
rear seat.
Make sure that nothing is on the seat
cushion.
To fold the seat, slowly pull the seat
cushion up.
To return the seat to the normal seating
position, slowly pull the seat cushion down.
{Warning
A seat belt that is improperly routed, not
properly attached, or twisted will not
provide the protection needed in a crash.
The person wearing the belt could be
seriously injured. After restoring the seat
to the normal seating position, always
check to be sure that the seat belts are
properly routed and attached, and are
not twisted.
Heated Rear Seats
{Warning
If you cannot feel temperature change or
pain to the skin, the seat heater may
cause burns. See the Warning under
Heated and Ventilated Front Seats 054.
If available, the buttons are on the rear of
the center console. To operate, the engine
must be running.
Press
MorLto heat the left or right
outboard seat cushion. An indicator on the
climate control display appears when this
feature is on.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Seats and Restraints 93
Position the release pushbutton on the
buckle, away from the child restraint, so
that the seat belt could be quickly
unbuckled if necessary.
There must not be direct contact of the
child restraint to the release pushbutton.
5. Pull the shoulder belt all the way out ofthe retractor to set the lock. When the
retractor lock is set, the belt can be
tightened but not pulled out of the
retractor.
6. To tighten the belt, push down on thechild restraint, pull the shoulder portion
of the belt to tighten the lap portion of
the belt, and feed the shoulder belt back
into the retractor. When installing a
forward-facing child restraint, it may be
helpful to use your knee to push down
on the child restraint as you tighten
the belt.
Try to pull the belt out of the retractor
to make sure the retractor is locked.
If the retractor is not locked, repeat
Steps 5 and 6. 7. For forward-facing child restraints, attach
and tighten the top tether to the top
tether anchor (loop). Refer to the child
restraint instructions, the vehicle LATCH
anchor weight limits, and instructions
listed in Lower Anchors and Tethers for
Children (LATCH System) 081.
8. Before placing a child in the child restraint, make sure it is securely held in
place. To check, grasp the child restraint
at the seat belt path and attempt to
move it side to side and back and forth.
When the child restraint is properly
installed, there should be no more than
2.5 cm (1 in) of movement.
To remove the child restraint, unbuckle the
vehicle seat belt and let it return to the
stowed position. If the top tether is attached
to a top tether anchor, disconnect it.
Reinstall the head restraint or headrest
before the seating position is used. See
“Head Restraint or Headrest Removal and
Reinstallation” underLower Anchors and
Tethers for Children (LATCH System) 081 for
additional information on installing the
headrest properly.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Infotainment System 185
Teen Driver
If equipped, this allows multiple keys to be
registered for beginner drivers to encourage
safe driving habits. When the vehicle is
started with a Teen Driver key, it will
automatically activate certain safety
systems, allow setting of some features, and
limit the use of others. The Report Card will
record vehicle data about driving behavior
that can be viewed later. When the vehicle
is started with a registered key, the Driver
Information Center (DIC) displays a message
that Teen Driver is active.
To access:1. Touch Settings on the Home Page, then touch Vehicle, and then Teen Driver.
2. Create a Personal Identification Number (PIN) by choosing a four-digit PIN.
Re-enter the PIN to confirm. To change
the PIN, touch Change PIN.
The PIN is required to:
.Set up/Add or remove keys.
.Change Teen Driver settings.
.Change or clear the Teen Driver PIN.
.Access or delete Report Card data. Set up/Add keys to activate Teen Driver and
assign restrictions to the key:
Any vehicle key can be registered, up to a
maximum of eight keys. Label the key to
tell it apart from the other keys.
For a pushbutton start 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. Place the remote key you wish to register in the transmitter pocket. The
key does not need to be the one that
started the vehicle. See Remote Key
Operation 015 for transmitter pocket
location.
6. From the Teen Driver menu, touch Setup Keys or Add/Remove Teen Driver Keys.
.If the remote key has not previously
been registered, the option to add
the key displays. Touch Add and a
confirmation message displays. Teen Driver restrictions will be applied
whenever this remote key is used to
operate the vehicle.
.If the remote key has already been
registered, the option to remove the
key displays. If Remove is touched,
the remote key is no longer
registered. A confirmation message
displays, and Teen Driver restrictions
will not be applied if this remote key
is used to operate the vehicle.
In vehicles with a pushbutton start system,
if a Teen Driver and a non-Teen Driver key
are both present at start up, the vehicle will
recognize the non-Teen Driver key to start
the vehicle. The Teen Driver settings will not
be active.
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.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Climate Controls 191
Climate Controls
Climate Control Systems
Climate Control Systems . . . . . . . . . . . . . . . 191
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Maintenance
Passenger Compartment Air Filter . . . . . 196
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Climate Control Systems
The heating, cooling, and ventilation in the vehicle can be controlled with this system.
1. Fan Control
2. Air Delivery Mode Controls
3. TEMP (Temperature Control)
4. Recirculation
5. A/C (Air Conditioning)
6. ON/OFF
7. MAX Defrost
8. Rear Window Defogger (If Equipped) or Heated Mirrors (If Equipped)9:Turn clockwise or counterclockwise to
increase or decrease the fan speed.
TEMP : Turn clockwise or counterclockwise
to increase or decrease the temperature
inside the vehicle.
Air Delivery Mode Controls : 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.