
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 - 12/13/22
Introduction 13
23. Data Link Connector (DLC). SeeMalfunction Indicator Lamp (Check
Engine Light) 0122 (Out of View).
24. Instrument Panel Illumination Control
0150.
Exterior Cargo Lamps 0149.
Exterior Lamp Controls 0143.
Fog Lamps 0148 (If Equipped).
Task Lighting 0148 (If Equipped).
25. Automatic Transfer Case Control. See Four-Wheel Drive 0228 (If Equipped).
Driver Mode Control 0238 (If Equipped).
Tow/Haul Mode. See Driver Mode Control
0 238 (If Equipped).
26. Electric Parking Brake 0234.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Keys, Doors, and Windows 15
If the vehicle has the Keyless Access system,
the remote key has a button on the side of
the remote key used to remove the key.
This key is used for the driver door and
glove box.
Press the button to remove the key. Never
pull the key out without pressing the
button.
See your dealer if a replacement key or
additional key is needed.
If it becomes difficult to turn a key, inspect
the key blade for debris. Periodically clean
with a brush or pick.With an active OnStar or connected service
plan, an OnStar Advisor may remotely
unlock the vehicle. See
OnStar Overview
0 417.
If locked out of the vehicle, see Roadside
Assistance Program 0408.
If equipped with memory seats, remote keys
1 and 2 are linked to seating positions of
memory 1 or 2. See Memory Seats051.
Remote Key
See Radio Frequency Statement 0413.
If there is a decrease in the remote key
operating range:
.Check the distance. The remote key may
be too far from the vehicle.
.Check the location. Other vehicles or
objects may be blocking the signal.
.Check the remote key's battery. See
“Battery Replacement” later in this
section.
.If the remote key is still not working
correctly, see your dealer or a qualified
technician for service.
Remote Key Operation
The Keyless Access system allows for vehicle
entry when the remote key is within 1 m
(3 ft). See “Keyless Access Operation” later
in this section.
The remote key functions may work up to
60 m (197 ft) away from the vehicle.
Other conditions can affect the performance
of the remote key. See Remote Key015.
The key that is part of the remote key can
be used for all locks.
Remove the key by pressing the button on
the side of the remote key near the bottom
and pull the key out. Never pull the key out
without pressing the button.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
16 Keys, Doors, and Windows
See your dealer if a new remote key is
needed.
S:The engine may be started from
outside the vehicle using the remote key.
Press
Stwice. See Remote Vehicle Start
0 21.
Q:Press to lock all doors and the tailgate,
if equipped.
If enabled, the turn signal lamps flash and/
or the horn may sound on the second press
to indicate locking has occurred. If enabled,
the horn chirps when
Qis pressed again
within three seconds. To view available settings from the infotainment screen, touch
Settings > Vehicle > Remote Lock, Unlock,
Start.
If the driver door is open when
Qis
pressed, all doors will lock and then the
driver door will immediately unlock,
if enabled. To view available settings from
the infotainment screen, touch Settings >
Vehicle > Remote Lock, Unlock, Start.
If the passenger door is open when
Qis
pressed, all doors lock.
Pressing
Qarms the alarm system. See
Vehicle Alarm System 032.
If equipped with remote mirror folding,
double pressing and holding
Qfor
one second will fold the mirrors, if enabled.
To view available settings from the
infotainment screen, touch Settings >
Vehicle > Comfort and Convenience.
K: Press once to unlock only the driver
door. If
Kis pressed again within
three seconds, all remaining doors and the
tailgate unlock. The interior lamps may
come on and stay on for 20 seconds or until
the ignition is turned on. If enabled, the turn signal lamps flash twice
to indicate unlocking has occurred.
If enabled, the exterior lamps may turn on.
To view available settings from the
infotainment screen, touch Settings >
Vehicle > Remote Lock, Unlock, Start.
Pressing
Kon the remote key disarms the
alarm system. See Vehicle Alarm System
0 32.
If equipped with remote mirror folding,
double pressing and holding
Kfor
one second will unfold the mirrors,
if enabled. To view available settings from
the infotainment screen, touch Settings >
Vehicle > Comfort and Convenience.
Double press and hold
Kuntil the windows
fully open, if remote window operation is
enabled. To view available settings from the
infotainment screen, touch Settings >
Vehicle > Remote Lock, Unlock, Start.
x: Press twice quickly to release the
tailgate, if equipped.
7: Press and release to initiate vehicle
locator. The turn signal lamps flash and the
horn sounds three times.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
18 Keys, Doors, and Windows
indicate access is disabled. Using any
exterior handle to unlock the doors or open
the tailgate will cause the turn signal lamps
to flash four times quickly, indicating access
is disabled. If disabled, disarm the alarm
system before starting the vehicle.
Enabling Keyless Unlocking:
With the vehicle off, press and hold
Qand
Kon the remote key at the same time for
approximately three seconds. The turn signal
lamps will flash twice quickly to indicate
access is enabled.
Passive Locking
This feature will lock the vehicle several
seconds after all doors are closed, if the
vehicle is off and at least one remote key
has been removed from the interior, or none
remain in the interior.
If other electronic devices interfere with the
remote key signal, the vehicle may not
detect the remote key inside the vehicle.
If passive locking is enabled, the doors may
lock with the remote key inside the vehicle.
Do not leave the remote key in an
unattended vehicle. To view available settings from the
infotainment screen, touch Settings >
Vehicle > Remote Lock, Unlock, Start.
Temporary Disable of Passive Locking
Temporarily disable passive locking by
pressing and holding
Kon the interior door
switch with a door open for at least
four seconds, or until three chimes are
heard. Passive locking will then remain
disabled until
Qon the interior door is
pressed, or until the vehicle is turned on.
Remote Left in Vehicle Alert
When the vehicle is turned off and an
remote key is left in the vehicle, the horn
will chirp three times after all doors are
closed. To view available settings from the
infotainment screen, touch Settings >
Vehicle > Remote Lock, Unlock, Start.
Remote No Longer in Vehicle Alert
If the vehicle is on with a door open and
then all doors are closed, the vehicle will
check for remote keys inside. If an remote
key is not detected, the Driver Information
Center (DIC) will display NO REMOTE
DETECTED and the horn will chirp three times. This occurs only once each time the
vehicle is driven. To view available settings
from the infotainment screen, touch
Settings > Vehicle > Remote Lock, Unlock,
Start.
Key Access
To access a vehicle with a dead remote key
battery, see
Door Locks022.Programming Remote Keys to the
Vehicle
Only remote keys programmed to the
vehicle will work. If a remote key is lost or
stolen, a replacement can be purchased and
programmed through your dealer. The
vehicle can be reprogrammed so that lost or
stolen remote keys no longer work. Each
vehicle can have up to eight remote keys
matched to it.
Starting the Vehicle with a Low Remote
Key Battery
If the remote key battery is weak or if there
is interference with the signal, the DIC may
display NO KEY FOUND, REPLACE BATTERY IN
KEY or NO REMOTE KEY WAS DETECTED
PLACE KEY IN KEY POCKET THEN START YOUR
VEHICLE when starting the vehicle.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Keys, Doors, and Windows 19
To start the vehicle:
Transmitter Pocket without Floor Console
Transmitter Pocket with Floor Console
Denali Transmitter Pocket
1. Place the remote key in the transmitter pocket/insert.
2. With the vehicle in P (Park) or N (Neutral) press the brake pedal and ENGINE
START/STOP.
Replace the remote key battery as soon
as possible.
Battery Replacement
{Warning
Never allow children to play with the
remote key. The remote key contains a
small battery, which can be a choking
(Continued)
Warning (Continued)
hazard. If swallowed, internal burns can
occur, resulting in severe injury or death.
Seek medical attention immediately if a
battery is swallowed.
{Warning
To avoid personal injury, do not touch
metal surfaces on the remote key when
it has been exposed to extreme heat.
These surfaces can be hot to the touch at
temperatures above 59 °C (138 °F).
Caution
When replacing the battery, do not touch
any of the circuitry on the remote key.
Static from your body could damage the
remote key.
Caution
Always replace the battery with the
correct type. Replacing the battery with
an incorrect type could potentially create
(Continued)

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
20 Keys, Doors, and Windows
Caution (Continued)
a risk of battery explosion. Dispose of
used batteries according to instructions
and local laws. Do not attempt to burn,
crush, or cut the used battery, and avoid
exposing the battery to environments
with extremely low air pressures or high
temperatures.
Caution
If the remote key is not reassembled
properly, liquids could enter the housing
and damage the circuitry, resulting in a
remote key malfunction and/or failure. To
prevent damage, always follow the steps
for remote key reassembly in this manual
to ensure the remote key is sealed
properly whenever the remote key is
opened.
Replace the battery in the remote key soon
if the DIC displays REPLACE BATTERY IN
REMOTE KEY. To replace the battery:
1. Press the button on the side of the
remote key near the bottom and pull the
mechanical key out. Never pull the
mechanical key out without pressing the
button.
2. Use the mechanical key blade in the slotto remove the battery cover by hand.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Keys, Doors, and Windows 23
from being forced open. To reset the lock
cylinder, ensure the correct key is fully
inserted into the lock cylinder. Rotate the
key until you feel the lock cylinder click
back into place. Remove the key and
reinsert fully, rotate the key to unlock the
vehicle.
Power Door Locks
Q:Press to lock the doors.
K:Press to unlock the doors.
Delayed Locking
This feature delays the locking of the doors
until five seconds after all doors are closed. When
Qis pressed on the power door lock
switch while the door is open, and the
vehicle is off, a chime will sound three times
indicating delayed locking is active.
The doors will lock automatically
five seconds after all doors are closed. If a
door is reopened before that time, the
five-second timer will reset when all doors
are closed again.
Press
Qon the door lock switch again or
press
Qon the remote key to lock the
doors immediately.
This feature can be programmed. To view
available settings from the infotainment
screen, touch Settings > Vehicle > Power
Door Locks.
Automatic Door Locks
If equipped, the doors will lock
automatically when all doors are closed, the
ignition is on, and the vehicle is shifted out
of P (Park).
If a vehicle door is unlocked, and then
opened and closed, the doors will lock either
when your foot is removed from the brake
or the vehicle speed becomes faster than
13 km/h (8 mph). To unlock the doors:
.PressKon the power door lock switch.
.Shift the transmission into P (Park).
Automatic door locking cannot be disabled.
Automatic door unlocking can be
programmed. To view available settings
from the infotainment screen, touch
Settings > Vehicle > Power Door Locks.
Lockout Protection
If the ignition is on or in accessory mode
and the power door lock switch is pressed
with the driver door open, all the doors will
lock and only the driver door will unlock.
If the vehicle is off and locking is requested
while a door is open, when all doors are
closed the vehicle will check to the Keyless
Access function (if equipped). If an remote
key is detected and the number of remote
keys inside has not reduced, the driver door
will unlock and the horn will chirp three
times.
Lockout Protection can be manually
overridden with the driver door open by
pressing and holding
Qon the power door
lock switch.