key GMC SIERRA 2023 Service Manual

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
46 Keys, Doors, and Windows
Programming the Power Windows
Programming may be necessary if the
vehicle battery has been disconnected or
discharged. If the window is unable to
express-up, program each express-close
window:1. Close all doors.
2. Turn the ignition on or to ACC/ACCESSORY.
3. Partially open the window to be programmed. Then close it and continue
to pull the switch briefly after the
window has fully closed.
4. Open the window and continue to press the switch briefly after the window has
fully opened.
Remote Window Operation
If equipped, this feature allows the windows
to be opened remotely. If enabled in vehicle
personalization, press and hold
Kon the
RKE transmitter. 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 “Remote Lock, Unlock,
Start”.
Rear Windows
Power Sliding Rear Window
If equipped, the power sliding rear window
works when the ignition has been turned on
or to ACC/ACCESSORY, or Retained Accessory
Power (RAP) must be active. See Retained
Accessory Power (RAP) 0227.
.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.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Keys, Doors, and Windows 47
Roof
Sunroof
1. SLIDE Switch
2. TILT Switch
If equipped, the sunroof operates when the
ignition is on or in ACC/ACCESSORY, or when
Retained Accessory Power (RAP) is active.
SeeRetained Accessory Power (RAP) 0227. 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.
Sunroof Comfort Stop Position : This vehicle
may be equipped with a comfort stop to
prevent excessive wind noise. The sunroof
will stop approximately halfway open during
an express open. To fully open the sunroof,
press and release
I(1) again.
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).

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
48 Keys, Doors, and Windows
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-16504257) - 2023 - CRC - 5/9/22
Seats and Restraints 53
2. Push and pull on the seatback to makesure it is locked.
Power Reclining Seatbacks
To recline a power seatback, if equipped:
.Tilt the top of the control rearward to
recline.
.Tilt the top of the control forward to
raise.
Lumbar Adjustment
Power Lumbar
To adjust the lumbar support, if equipped:
.Press and hold the control forward to
increase or rearward to decrease upper
and lower lumbar support at the
same time.
Memory Seats
Overview
If equipped, the memory seat feature allows
drivers to save their unique driving positions
and a shared exit position. See “Saving
Seating Positions” later in this section. The
saved positions can be recalled manually by
all drivers, see “Manually Recalling Seating
Positions” later in this section, and drivers
with remote key 1 and 2 can also recall
them automatically. See “Auto Seat Entry
Memory Recall” or“Auto Seat Exit Memory
Recall” later in this section. To enable
automatic recalls, turn on Seat Entry
Memory and/or Seat Exit Memory. See
“Enabling Automatic Recalls” later in this

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
54 Seats and Restraints
section. The memory recalls may be
cancelled at any time during the recall. See
“Cancel Memory Seating Recalls”later in this
section.
Identifying Driver Number
The vehicle identifies the current driver by
their remote key number 1–8. The current
remote key number may be identified by
Driver Information Center (DIC) welcome
message, “You are driver x for memory
recalls.” This message is displayed the first
few times the vehicle is turned on when a
different remote key is used. For Seat Entry
Memory to work properly, save positions to
the 1 or 2 memory button matching the
driver number of this welcome message. To
aid in identifying remote key IDs, it is
recommended to only carry one remote key
when entering the vehicle. Perform the
following if the welcome message is not
displayed:
1. Move all keys and remote keys away from the vehicle.
2. Start the vehicle with another remote key. A DIC welcome message should
display indicating the driver number of
the other remote key. Turn the vehicle
off and remove the other key or remote
key from the vehicle. 3. Start the vehicle with the initial key or
remote key. The DIC welcome message
should display the driver number of the
initial remote key.
Saving Seating Positions
Read these instructions completely before
saving memory positions.
To save preferred driving positions to
1 and 2: 1. Turn the vehicle on or to accessory mode. A DIC welcome message may
indicate the driver number of the current
remote key. See “Identifying Driver
Number” previously in this section.
2. Adjust all available memory features to the desired driving position.
3. Press and release SET; a beep will sound.
4. Immediately upon releasing SET, press and hold memory button 1 or 2 matching
the current Driver’s remote key number
until two beeps sound. If too much time
passes between releasing SET and
pressing 1 or 2, the two beeps will not
sound indicating memory position were
not saved. Repeat Steps 3 and 4 to try
again. 5. Repeat Steps 1–4 for the other remote
key 1 or 2 using the other 1 or 2 memory
button.
It is recommended to save the preferred
driving positions to both 1 and 2 if you are
the only driver.
To save the common exit seating position to
Bthat is used by all drivers for Manually
Recalling Seating Positions and Auto Seat
Exit Memory Recall features, repeat
Steps 1–4 using
B, the exit button.
Manually Recalling Seating Positions
Press and hold 1, 2, or
Bbutton until the
recall is complete, to recall the positions
previously saved to that button.
Manual Memory recall movement for 1, 2 or
Bbuttons may be initiated and will
complete to the saved memory position if
the vehicle is in or out of P (Park).
Enabling Automatic Recalls
.Seat Entry Memory moves the driver seat
to the selected 1 or 2 position when the
vehicle is started. Select Settings >
Vehicle > Seating Position > Seat Entry
Memory > ON or OFF. See “Auto Seat
Entry Memory Recall” later in this section.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Seats and Restraints 55
.Seat Exit Memory moves the driver seat
to the preferred exit position of the
B
button when the vehicle is turned off and
the door is opened. Select Settings >
Vehicle > Seating Position > Seat Exit
Memory > Select ON or OFF. See“Auto
Seat Exit Memory Recall” later in this
section.
Auto Seat Entry Memory Recall
Seat Entry Memory will automatically begin
movement to the seating positions of the 1
or 2 button corresponding to the driver’s
remote key number 1 or 2 detected by the
vehicle when:
.The vehicle is turned ON.
.Seating positions have been previously
saved to the same 1 or 2 button. See
“Saving Seating Positions” previously in
this section.
.Seat Entry Memory is enabled. See
“Enabling Automatic Recalls” previously in
this section.
.The vehicle is in P (Park).
Seat Entry Memory Recall will continue if
the vehicle is shifted out of P (Park) prior to
reaching the saved memory position. If the saved memory seat position does not
automatically recall, verify the recall is
enabled. See
“Enabling Automatic Recalls”
previously in this section.
If the memory seat recalls to the wrong
position, the driver’s remote key number 1
or 2 may not match the memory button
number positions they were saved to. Try
the other remote key or try saving the
positions to the other 1 or 2 memory
button. See “Saving Seating Positions”
previously in this section.
Automatic Seat Entry Memory recalls are
only available for driver’s remote key
numbers 1 and 2. Remote keys 3–8 will not
provide Seat Entry Memory recalls.
Auto Seat Exit Memory Recall
Seat Exit Memory will begin movement to
the seating position of the
B
button when:
.The vehicle is turned off and the driver
door is open or opened within a
short time.
.A seating position has been previously
been saved to the
Bmemory button.
See “Saving Seating Positions” previously
in this section.
.Seat Exit Memory is enabled. See
“Enabling Automatic Recalls” previously in
this section.
.The vehicle is in P (Park).
Seat Exit Memory recall will continue if the
vehicle is shifted out of P (Park) prior to
reaching the saved memory position.
Seat Exit Memory is not linked to the
driver’s remote key. The seating position
saved to
Bis used for all drivers.
Cancel Memory Seating Recalls
.During any memory recall:
Press a power seat control
Press SET memory button
.During Manual memory recall:
Release 1, 2, or
Bmemory button
.During Auto Seat Entry Memory Recall:
Turn vehicle off
Press SET, 1, 2, or
Bmemory buttons
.During Auto Seat Exit Memory Recall:
Press SET, 1, 2, or
Bmemory buttons

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
64 Seats and Restraints
Seat Belt Use During Pregnancy
Seat belts work for everyone, including
pregnant women. Like all occupants, they
are more likely to be seriously injured if
they do not wear seat belts.
A pregnant woman should wear a
lap-shoulder belt, and the lap portion should
be worn as low as possible, below the
rounding, throughout the pregnancy.
The best way to protect the fetus is to
protect the mother. When a seat belt is
worn properly, it is more likely that the
fetus will not be hurt in a crash. For
pregnant women, as for anyone, the key to
making seat belts effective is wearing them
properly.
Seat Belt Extender
If the vehicle's seat belt will fasten around
you, you should use it.
But if a seat belt is not long enough, your
dealer will order you an extender. Only a
GM dealer issued extender should be used.
When you go in to order it, take the
heaviest coat you will wear, so the extender
will be long enough for you. To help avoid
personal injury, do not let someone else use
it, and use it only for the seat it is made to
fit. The extender has been designed for
adults. Never use it for securing child
restraints. For more information on the
proper use and fit of seat belt extenders see
the instruction sheet that comes with the
extender.
Safety System Check
Periodically check the seat belt reminder,
seat belts, buckles, latch plates, retractors,
shoulder belt height adjusters (if equipped),
and seat belt anchorages to make sure they
are all in working order. Look for any other
loose or damaged seat belt system parts
that might keep a seat belt system from
performing properly. See your dealer to
have it repaired. Torn, frayed, or twisted
seat belts may not protect you in a crash.Torn or frayed seat belts can rip apart under
impact forces. If a belt is torn or frayed,
have it replaced immediately. If a belt is
twisted, it may be possible to untwist by
reversing the latch plate on the webbing.
If the twist cannot be corrected, ask your
dealer to fix it.
Make sure the seat belt reminder light is
working. See
Seat Belt Reminders 0118.
Keep seat belts clean and dry. See Seat Belt
Care 064.
Seat Belt Care
Keep belts clean and dry.
Seat belts should be properly cared for and
maintained.
Seat belt hardware should be kept dry and
free of dust or debris. As necessary, exterior
hard surfaces and seat belt webbing may be
lightly cleaned with mild soap and water.
Ensure there is not excessive dust or debris
in the mechanism. If dust or debris exists in
the system please see the dealer. Parts may
need to be replaced to ensure proper
functionality of the system.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
100 Storage
Storage
Storage Compartments
Storage Compartments . . . . . . . . . . . . . . . . 100
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Underseat Storage . . . . . . . . . . . . . . . . . . . . . 101
Rear Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Center Console Storage . . . . . . . . . . . . . . . . 101
Floor Console Storage . . . . . . . . . . . . . . . . . 102
Additional Storage Features
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . 102
Storage Compartments{
Warning
Do not store heavy or sharp objects in
storage compartments. In a crash, these
objects may cause the cover to open and
could result in injury.
Glove Box
To access the upper glove box, pull up on
the handle.
To access the lower glove box, unlock with
the key and pull up on the handle.
Cupholders
Front
There may be cupholders on the center
front seat console armrest.
Rear
If equipped, pull the rear seat armrest down
to access the cupholders.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
102 Storage
Bench Seat
If equipped with storage, press the latch and
lift to open.
Bucket Seat Press the latch and lift to open.
Floor Console Storage
If equipped with front center seat storage,
unlock with the ignition key, press the latch,
and lift to open.
Additional Storage Features
Cargo Tie-Downs
Caution
The truck bed walls will collapse if the
tie-downs are overloaded.
Standard and Long Box
This vehicle is equipped with 12 fixed cargo
tie-downs.
Any of the 12 locations inside the truck bed
can be used. The maximum load per corner
is 227 kg (500 lb).

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Instruments and Controls 109
Wireless Charging
If equipped and enabled, the vehicle has
wireless charging on the center console in
front of the cupholders. The system
operates at 145 kHz and wirelessly charges
one Qi compatible smartphone. The power
output of the system is capable of charging
at a rate up to 3 amp (15 W), as requested
by the compatible smartphone. SeeRadio
Frequency Statement 0404.
{Warning
Wireless charging may affect the
operation of an implanted pacemaker or
other medical devices. If you have one, it
is recommended to consult with your
doctor before using the wireless charging
system.
The vehicle must be on, in ACC/ACCESSORY,
or Retained Accessory Power (RAP) must be
active. The wireless charging feature may
not correctly indicate charging when the
vehicle is in RAP, during a Bluetooth phone
call, or when phone projection (e.g. Apple
CarPlay / Android Auto) is active. See
Retained Accessory Power (RAP) 0227. The operating temperature is
−40 °C (−40 °F)
to 85 °C (185 °F) for the charging system and
0 °C (32 °F) to 35 °C (95 °F) for the phone.
A charging stopped alert may be displayed
on the infotainment screen, if the wireless
charger or smartphone are outside of
normal operating temperature. Charging will
automatically resume when a normal
operating temperature is reached.
{Warning
Remove all objects from the charger
before charging your compatible
smartphone. Objects, such as coins, keys,
rings, paper clips, or cards, between the
smartphone and charger may become
very hot.
On the rare occasion that the charging
system does not detect an object, and
the object gets wedged between the
smartphone and charger, remove the
smartphone and allow the object to cool
before removing it from the charger, to
prevent burns.
To charge a compatible smartphone:
1. Confirm the smartphone is capable of wireless charging.
2. Remove all objects from the charging pad. The system may not charge if there
are any objects between the smartphone
and charger.
3. Place the smartphone face up against the rear of the charger.
To maximize the charge rate, ensure the
smartphone is fully seated and centered
in the holder with nothing under it.
A thick smartphone case may prevent
the charger from working, or reduce the
charging performance. See your dealer
for additional information.