2024 GMC SIERRA sunroof

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
14 Keys, Doors, and Windows
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Remote Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Remote Key Operation . . . . . . . . . . . . . . . . . . 15
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . 21
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . 23
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 23
Automatic Door Locks . . . . . . . . . . . . . . . . . . 23
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . 23
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Doors
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Transporting Items That CanCatch Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Power Assist Steps . . . . . . . . . . . . . . . . . . . . . . 31
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 32
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 32
Steering Column Lock . . . . . . . . . . . . . . . . . . . 33
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Immobilizer Operation . . . . . . . . . . . . . . . . . . 33
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 34
Manual Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 34
Trailer-Tow Mirrors . . . . . . . . . . . . . . . . . . . . . 35
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 36
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 37
Automatic Dimming Mirror . . . . . . . . . . . . . 37
Blind Spot Mirrors . . . . . . . . . . . . . . . . . . . . . . 37
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . 38
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . . . . . . . 38
Manual Rearview Mirror . . . . . . . . . . . . . . . . 38
Automatic Dimming Rearview Mirror . . . 38
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . 38
Truck Bed Camera Rearview Mirror . . . . . 41
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Power Windows . . . . . . . . . . . . . . . . . . . . . . . . 42
Rear Windows . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with a
remote key is dangerous and children or
others could be seriously injured or killed.
They could operate the power windows
or other controls or make the vehicle
move. The windows will function with
the remote key in the vehicle, and
children or others could be caught in the
path of a closing window. Do not leave
children in a vehicle with a remote key.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
42 Keys, Doors, and Windows
The vehicle aerodynamics are designed to
improve fuel economy performance. This
may result in a pulsing sound when either
rear window is down and the front windows
are up. To reduce the sound, open either a
front window or the sunroof, if equipped.
Power Windows
{Warning
Children could be seriously injured or
killed if caught in the path of a closing
window. Never leave the remote key in a
vehicle with children. When there are(Continued)
Warning (Continued)
children in the rear seat, use the window
lockout switch to prevent operation of
the windows. SeeKeys014.
The power windows work when the ignition
is on, in accessory mode, or when Retained
Accessory Power (RAP) is active. See
Retained Accessory Power (RAP) 0220.
Using the window switch, press to open or
pull to close the window.
The windows may be temporarily disabled if
they are used repeatedly within a
short time.
Window Lockout
With Power Folding Mirrors, Without Similar
This feature stops the rear door passenger
window switches from working except from
the driver position.
Press
2to engage the rear window
lockout feature. The indicator light is on
when engaged.
Press
2again to disengage.
Windows Express Movement
All windows can be opened without holding
the window switch. Press the switch down
fully and quickly release to express open the
window.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
44 Keys, Doors, and Windows
Rear Windows
Power Sliding Rear Window
If equipped, the power sliding rear window
works when the ignition has been turned on
or to accessory mode, or Retained Accessory
Power (RAP) must be active. SeeRetained
Accessory Power (RAP) 0220.
.Press the switch to open the window.
.Pull the switch to close the window.
The power sliding rear window cannot be
operated manually.
Sun Visors
Pull the sun visor down to block glare.
If equipped, detach the sun visor from the
center mount to pivot to the side window
or to extend along the rod.
If equipped, there is a lighted mirror on the
sun visor. Lift the cover to open.
Roof
Sunroof
1. SLIDE Switch
2. TILT Switch
If equipped, the sunroof operates when the
ignition is on or in accessory mode, or when
Retained Accessory Power (RAP) is active.
See Retained Accessory Power (RAP) 0220.

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 45
Slide Switch
Express-Open/Express-Close :To
express-open the sunroof, fully press and
release
I(1). Press and releaseI(1) again
to stop the movement. To express-close the
sunroof, fully press and release
K(1).
Press and release
K(1) again to stop the
movement.
Open/Close (Manual Mode) : To open the
sunroof, press and hold
I(1). ReleaseI(1)
to stop the movement. Press and hold
K(1) to close the sunroof. ReleaseK(1) to stop the movement.
Tilt Switch
Vent : From the closed position, press
J(2)
to vent the sunroof. Press
K(2) to close
the vent.
When the sunroof is opened, an air deflector
will automatically raise. The air deflector will
retract when the sunroof is closed.
The sunroof also has a sunshade, which can
be pulled forward to block sun rays. The
sunshade must be opened and closed
manually.
Automatic Reversal System
The sunroof has an automatic reversal
system that is only active when the sunroof
is operated in express-close mode.
If an object is in the path while
express-closing, the reversal system will
detect an object, stop, and open the sunroof
slightly.
If frost or other conditions prevent closing,
override the feature by closing the sunroof
in manual mode. To stop movement, release
K(1).
Dirt and debris may collect on the sunroof
seal or in the track. This could cause an
issue with sunroof operation or noise. It could also plug the water drainage
system. Periodically open the sunroof and
remove any obstacles or loose debris. Wipe
the sunroof seal and roof sealing area using
a clean cloth, mild soap, and water. Do not
remove grease from the sunroof tracks.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Infotainment System 163
lines interfere with radio reception. When
this happens, try reducing the treble on the
radio.
SiriusXM Satellite Radio Service
If equipped, SiriusXM Satellite Radio Service
provides digital radio reception. Tall
buildings or hills can interfere with satellite
radio signals, causing the sound to fade in
and out. In addition, traveling or standing
under heavy foliage, bridges, garages,
or tunnels may cause loss of the SiriusXM
signal for a period of time. Some cellular
services may interfere with SXM reception
causing loss of signal.
Mobile Device Usage
Mobile device usage, such as making or
receiving calls, charging, or just having the
mobile device on may cause static
interference in the radio. Unplug the mobile
device or turn it off if this happens.
Multi-Band Antenna
The multi-band roof antenna may be used
for radio, navigation, and other
communication systems, depending on the
equipped options. To ensure clear reception,
keep the antenna clear of obstructions, suchas snow and ice. If the vehicle has a
sunroof, and it is open, or a roof loaded
with cargo, reception may be affected.
Audio Players
Avoiding Untrusted Media Devices
When using media devices such as USB and
mobile devices, consider the source.
Untrusted media devices could contain files
that affect system operation or performance
and should be avoided.
USB Port
The vehicle may be equipped with multiple
USB ports. Ports may also be used for
charging. Music may be played from a
connected USB device.
Caution
To avoid vehicle damage, unplug all
accessories and disconnect all accessory
cables from the vehicle when not in use.
Accessory cables left plugged into the
vehicle, unconnected to a device, could be
damaged or cause an electrical short if
(Continued)
Caution (Continued)
the unconnected end comes in contact
with liquids or another power source such
as the accessory power outlet.
USB Audio
To play music via USB:
1. On the audio now playing page, touch source and select USB.
2. If there is no device connected, follow the screen prompts to connect the
device.
3. Supported media content will appear on the display.
Bluetooth Audio (Base Radio)
Music may be played from a paired
Bluetooth device. See Bluetooth (Pairing and
Using a Phone for Uplevel Radio) 0171 or
Bluetooth (Pairing and Using a Phone for
Base Radio) 0174 or
Bluetooth (Overview) 0170 for help pairing
a device.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/13/22
220 Driving and Operating
Warning (Continued)
.Do not operate the vehicle with the
heater cord permanently attached to
the vehicle. Possible heater cord and
thermostat damage could occur.
.While in use, do not let the heater
cord touch vehicle parts or sharp
edges. Never close the hood on the
heater cord.
.Before starting the vehicle, unplug the
cord, reattach the cover to the plug,
and securely fasten the cord. Keep the
cord away from any moving parts.
5. Before starting the engine, be sure to unplug and store the cord.
The length of time the heater should remain
plugged in depends on several factors. Ask a
dealer in the area where you will be parking
the vehicle for the best advice on this.
Retained Accessory Power (RAP)
When the vehicle is turned from on to off,
the following features (if equipped) will
continue to function for up to 10 minutes,
or until the driver door is opened. These
features will also work when the vehicle is
on or in accessory mode:
.Infotainment System
.Power Windows (during RAP this
functionality will be lost when any door
is opened)
.Sunroof (during RAP this functionality will
be lost when any door is opened)
.Auxiliary Power Outlet
.Audio System
.OnStar System
Vehicle Shutdown
Your vehicle is equipped with a sophisticated
on-board system to diagnose any potential
issues. Many of these operations can occur
after you shut off the engine. You may hear
fans, pumps, solenoids, etc. running for an
extended period after you shut down.
Shifting Into Park
{Warning
Parking on grades with poor traction such
as ice, snow, mud, or gravel may cause
the vehicle to unintentionally move and
could result in injury, death, and/or
vehicle damage. If equipped with
four-wheel drive, use AUTO or 4 (High) to
provide additional traction. Be sure to
apply the parking brake. See Electric
Parking Brake 0234 and
Four-Wheel Drive 0228.
{Warning
It can be dangerous to get out of the
vehicle if the shift lever is not fully in
P (Park) with the parking brake firmly set.
The vehicle can roll. If you have left the
engine running, the vehicle can move
suddenly. You or others could be injured.
To be sure the vehicle will not move,
even when you are on fairly level ground,
use the steps that follow. With
four-wheel drive, if the transfer case is in
N (Neutral), the vehicle will be free to
(Continued)

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
344 Vehicle Care
FusesUsage
F1 Right Doors
F2 Left Doors
F3 –
F4 ELM 2 –Electronic Lighting
Module 2
F5 ELM 7 –Electronic Lighting
Module 7
F6 Front Blower
F8 LF Window Switch
F10 Steering Tilt (LD)/UVM (HD)/Electronic Lighting
Module 5
F11 VPM/OHC Camera
F12 CGM/TCP/COL LCK/ DMS (LD)
F14 –
F17 Steering Wheel Controls
F18 –
F19 –
F20 –
F21 – Fuses
Usage
F22 Heated Steering Wheel
F23 –
F24 –
F25 SPOT LAMP LT/RT (LD)
F26 USB Ports/Special Equipment Option Retained
Accessory Power
F27 Accessory Power Outlet/ Retained Accessory Power
F28 Accessory Power Outlet/ Battery
F30 SDM/ICS/IPC/HUD/HMDTY (HD)/HDLM (LD)
F31 BCM 2 –Body Control
Module 2
F32 RFA WCM AUX JACK/CSM AUX JACK/TBCS
F33 BCM 4 –Body Control
Module 4
F34 –
F40 –
F41 – Fuses
Usage
F42 Electric Park Brake Switch
F43 –
F44 Shifter Interface Board (LD) F45 Radio Lo
F46 –
F47 –
F48 Transmission Control Module
F49 Body Control Module 1 F50 –
F51 Battery 1 (HD)
F52 Battery 2 (HD)
F53 –
F54 Sunroof F55 Driver Power Seat
F56 DC DC TRANS 1 (LD) F57 DC DC TRANS 2 (LD)
F58 –

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
434 Index
ReplacementGlass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 399
Replacing Airbag System . . . . . . . . . . . . . . . . . . . . . . . . . . 74
LATCH System Parts After a Crash . . . . . . 91
Seat Belt System Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Reporting Safety Defects
Canadian Government . . . . . . . . . . . . . . . . . 414
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 414
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 414
Restraints Where to Put . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Retained Accessory Power (RAP) . . . . . . . . . 220
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . . . 38
Roads Driving, Wet . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Roadside Assistance Program . . . . . . . . . . . . 408
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Routing, Engine Drive Belt . . . . . . . . . . . . . . . 404
Running Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Running the Vehicle While Parked . . . . . . . 223S
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Safety Defects Reporting Canadian Government . . . . . . . . . . . . . . . . . 414
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 414
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 414
Safety System Check . . . . . . . . . . . . . . . . . . . . . 63
Satellite Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Scheduling Appointments . . . . . . . . . . . . . . . . 410
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57 Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . 58
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
How to Wear Seat Belts Properly . . . . . . . 58
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . 60
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Replacing after a Crash . . . . . . . . . . . . . . . . . 64
Use During Pregnancy . . . . . . . . . . . . . . . . . . 63
Seats Adjustment, Front . . . . . . . . . . . . . . . . . . . . . . 48
Center Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . 47
Heated and Ventilated, Front . . . . . . . . . . . 54
Heated, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Lumbar Adjustment, Front . . . . . . . . . . . . . . 50
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Seats (cont'd)
Power Adjustment, Front . . . . . . . . . . . . . . . 49
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . 49
Underseat Storage . . . . . . . . . . . . . . . . . . . . . 100
Securing Child Restraints . . . . . . . . . . . . . . 92, 95
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Accessories and Modifications . . . . . . . . . 310
Climate Control System . . . . . . . . . . . . . . . . . 191
Doing Your Own Work . . . . . . . . . . . . . . . . . . 311
Electric Parking Brake Light . . . . . . . . . . . . 124
Maintenance Records . . . . . . . . . . . . . . . . . 400
Maintenance, General Information . . . . . 393
Parts Identification . . . . . . . . . . . . . . . . . . . . . 401
Scheduling Appointments . . . . . . . . . . . . . . 410
Services
Special Application . . . . . . . . . . . . . . . . . . . . . 397
Servicing the Airbag . . . . . . . . . . . . . . . . . . . . . . .73
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181, 183
Shift Lock Control Function Check, Automatic Transmission . . . . . . . . . . . . . . . . 330
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220