
Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - CRC - 8/21/20
Introduction 5
1.Electric Parking Brake 0240.
2.
gTraction Control/Electronic Stability
Control 0242.
hStop/Start Button (If Equipped). See
Stop/Start System 0229
XPark Assist Button (If Equipped). See
Assistance Systems for Parking or Backing
0 262.
ALane Keep Assist (LKA) 0275 (If
Equipped).
5Hill Descent Control (HDC) 0244 (If
Equipped).
-110V Power Outlet Enable (If
Equipped). See Power Outlets098.
3. Air Vents 0208 4. Turn Signal Lever. See
Turn and
Lane-Change Signals 0137.
Windshield Wiper/Washer 095.
Rear Window Wiper/Washer 096.
5. Head-Up Display (HUD) 0121 (If
Equipped).
6. Favorite Switches (Out of View). See Steering Wheel Controls 0144.
Volume Switches (Out of View). See
Steering Wheel Controls 0144.
7. Instrument Cluster 0102.
8. Shift Buttons. See Automatic
Transmission 0232.
Electronic Range Select (ERS). See Manual
Mode 0235. 9. Light Sensor. See
Automatic Headlamp
System 0135.
10. Infotainment. See Introduction0141.
11. Instrument Panel Storage 088 (If
Equipped).
12. Hazard Warning Flashers 0136.
13. Infotainment. See Overview0142.
14. Dual Automatic Climate Control System
0204.
15. Heated and Ventilated Front Seats 043
(If Equipped).
16. Power Outlet (12V Direct Current) (If Equipped). See Power Outlets098.
17. Rear Climate Control Buttons. See Rear
Climate Control System 0207.
18. USB Port 0152.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
8 Keys, Doors, and Windows
The mechanical key inside the remote key is
used for the driver door and glove box.
To remove the mechanical key, 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.
The mechanical key may have a bar-coded
key tag that the dealer or qualified
locksmith can use to make new keys. store
this information in a safe place, not in the
vehicle.
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
0 412.
If locked out of the vehicle, see Roadside
Assistance Program 0404.
If equipped with memory seats, remote keys
1 and 2 are linked to seating positions of
memory 1 or 2. See Memory Seats040.
Remote Keyless Entry (RKE)
System
See Radio Frequency Statement 0409.
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 Keyless Entry (RKE)
System 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 Keyless Entry
(RKE) System 08.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Keys, Doors, and Windows 9
Q:Press to lock all doors.
If enabled, the turn signal lamps flash once
on the second press to indicate locking has
occurred. If enabled, the horn chirps when
Qis pressed again within three seconds. See
Vehicle Personalization 0124.
Pressing
Qarms the alarm system. See
Vehicle Alarm System 025.
If equipped with auto mirror folding,
pressing and holding
Qfor one second will
fold the mirrors, if enabled. See Vehicle
Personalization 0124.
K:Press once to unlock only the driver
door. If
Kis pressed again within
three seconds, all remaining doors 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.
See Vehicle Personalization 0124.
Pressing
Kon the remote key disarms the
alarm system. See Vehicle Alarm System
0 25. If equipped with auto mirror folding,
pressing and holding
Kfor one second will
unfold the mirrors, if enabled. See Vehicle
Personalization 0124.
Press and hold
Kuntil the windows fully
open, if remote window operation is
enabled. See Vehicle Personalization 0124.
b:Press twice to open or close the
liftgate. Press once to stop the liftgate from
moving.
c: Press twice to open the liftglass.
7:Press and release to initiate vehicle
locate. The turn signal lamps flash and the
horn sounds three times.
Press and hold
7for more than
three seconds to activate the panic alarm.
The turn signal lamps flash and the horn
sounds repeatedly for 30 seconds. The alarm
turns off when the ignition is turned on or
7is pressed again. The ignition must be off
for the panic alarm to work.
/: To remote start the vehicle, double
press
/from outside the vehicle using the
remote key. The vehicle cannot be started if
a remote key is left inside the vehicle. See
Remote Vehicle Start 014.
Keyless Access Operation
The Keyless Access system allows for doors
and the liftgate to be accessed without
removing the remote key from your pocket,
purse, briefcase, etc. The remote key must
be within 1 m (3 ft) of the liftgate or door
being opened. If the vehicle has this feature,
there will be a button on the outside door
handles.
Keyless Access can be programmed to
unlock all doors on the first lock/unlock
press from the driver door. See Vehicle
Personalization 0124.
If equipped with memory seats, remote keys
1 and 2 are linked to seating positions of
memory 1 or 2. See Memory Seats040.
Keyless Unlocking/Locking from the
Driver Door
When the doors are locked and the remote
key is within 1 m (3 ft) of the door handle,
pressing the lock/unlock button on the
driver door handle will unlock the driver
door. If the lock/unlock button is pressed
again within five seconds, all passenger
doors and the liftgate will unlock.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Keys, Doors, and Windows 11
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 a remote
key is left in the vehicle, the horn will chirp
three times after all doors are closed. To
turn on or off see Vehicle Personalization
0 124.
Remote Removed From 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 a 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 turn on or off see
Vehicle Personalization 0124. Keyless Liftgate Opening
Press the touch pad on the underside of the
liftgate handle to open the liftgate when all
doors are unlocked, or when the remote key
is within 1 m (3 ft).
Keyless Liftglass Opening
Press the exterior liftglass button to open
the liftglass when all doors are unlocked,
or when the remote key is within 1 m (3 ft).
See
Liftgate 018.
Key Access
To access a vehicle with a weak remote key
battery, see Door Locks015.
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
programmed to it.
Programming with Recognized Remote Keys
A new key can be programmed to the
vehicle when there are two recognized keys. To program, the vehicle must be in RUN and
all remote keys, both currently recognized
and new, must be with you.
Vehicles with Front Bench Seat
1. Place the two recognized remote keys on the passenger seat.
2. Scroll to the DIC menu to "Remote Key Learn" menu and select.
The DIC displays READY FOR REMOTE #3,
4, 5, ETC.
3. Place the new remote key into thebackup pocket in the lower console bin.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
14 Keys, Doors, and Windows
1. Press the button on the side of theremote key and pull the mechanical key
out. Never pull the mechanical key out
without pressing the button.
2. With the mechanical key removed, inserta flat, thin object in the center of the
remote key to separate and remove the
back cover.
3. Lift the battery with a flat object.
4. Remove the battery.
5. Insert the new battery, positive sidetoward the back cover. Replace with a
CR2032 or equivalent battery.
6. Push together the remote key.
7. Reinsert the mechanical key.
Remote Vehicle Start
If equipped with the remote start feature,
the climate control system will come on
when the vehicle is started remotely
depending on the outside temperature.
The rear defog and heated and ventilated
seats, if equipped, may also come on. See
Heated and Ventilated Front Seats 043 and
Vehicle Personalization 0124.
Laws in some communities may restrict the
use of remote starters. Check local
regulations for any requirements on remote
starting of vehicles.
Do not use remote start if the vehicle is low
on fuel. The vehicle may run out of fuel.
The vehicle cannot be remote started if:
.The remote key is in the vehicle.
.The hood is not closed.
.There is an emission control system
malfunction and the malfunction indicator
lamp is on.
.The hazard flashers are on.
.Two remote vehicle starts or a start with
an extension have already been used.
.The vehicle is not in P (Park).
.The vehicle is not off.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Keys, Doors, and Windows 29
Resetting the Power Folding Mirrors
Reset the power folding mirrors if:
.The mirrors are accidentally obstructed
while folding.
.They are accidentally manually folded/
unfolded.
.The mirrors do not stay in the unfolded
position.
.The mirrors vibrate at normal driving
speeds.
Fold and unfold the mirrors one time using
the mirror controls to reset them to their
normal position. A noise may be heard
during the resetting of the power folding
mirrors. This sound is normal after a manual
folding operation.
Remote Mirror Folding
If equipped with power folding mirrors and
the mirrors have been folded with the
power folding mirror switch, they may not
be unfolded by use of remote key.
If equipped with power folding mirrors and
the mirrors have not been folded with the
power folding mirror switch and the vehicle
is in P (Park), they may be automatically
folded/unfolded as follows: 1. If doors are locked by pressing
Hon the
remote key, the mirrors will fold.
If doors are unlocked by pressing
Ion
the remote key, the mirrors will unfold.
See Remote Keyless Entry (RKE) System
Operation 08.
2. If doors are locked by pressing the door handle button, the mirrors will fold.
If doors are unlocked by pressing the
door handle button, the mirrors will
unfold. See “Keyless Unlocking/Locking
from the Driver Door” inRemote Keyless
Entry (RKE) System Operation 08.
3. If passive locking is enabled and doors are locked by that feature, the mirrors
will fold. See “Passive Locking” inRemote
Keyless Entry (RKE) System Operation
0 8.
Heated Mirrors
K:Press to heat the mirrors.
See “Rear Window Defogger” underDual
Automatic Climate Control System 0204.
Automatic Dimming Mirror
If equipped, the driver outside mirror
automatically adjusts for the glare of the
headlamps from behind. This feature comes
on when the vehicle is started.
Reverse Tilt Mirrors
If equipped with reverse tilt mirrors and
memory seats, the passenger and/or driver
mirror tilts to a preselected position when
the vehicle is in R (Reverse). This allows the
curb to be seen when parallel parking.
The mirror(s) may move from their tilted
position when:
.The vehicle is shifted out of R (Reverse),
or remains in R (Reverse) for about
30 seconds.
.The vehicle is turned off.
.The vehicle is driven in R (Reverse) above
a set speed.
To turn this feature on or off, see Vehicle
Personalization 0124.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Seats and Restraints 37
Adjust the head restraint so that the top of
the restraint is at the same height as the
top of the occupant's head. This position
reduces the chance of a neck injury in a
crash.
Front Seats
The vehicle's front seats have adjustable
head restraints in the outboard seating
positions.
The height of the head restraint can be
adjusted.
To raise or lower the head restraint, press
the button located on the side of the head
restraint and pull up or push the head
restraint down, and release the button. Pull
and push on the head restraint after the
button is released to make sure that it is
locked in place.
The front seat outboard head restraints are
not removable.
Rear Seats
Second Row Seats
The vehicle’s second row seats have head
restraints in the outboard seating positions
that cannot be adjusted.
The second row outboard head restraints are
not removable.
The second row outboard head restraints are
designed to be folded.
When folding the second row seatbacks
down, the head restraint will automatically
fold out of the way as the seat is
folded down.
The second row outboard head restraints
can be folded forward to allow for better
visibility when the rear seat is unoccupied.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
38 Seats and Restraints
To fold the head restraint, press the button
on the side of the head restraint.
The head restraint will fold forward
automatically.When an occupant or child restraint is in the
seat, always return the head restraint to the
full upright position. Push the head restraint
up and rearward until it locks into place.
Push and pull on the head restraint to make
sure that it is locked.
Third Row Seats
The vehicle’s third row seats have head
restraints in the outboard seating positions
that cannot be adjusted up or down.
The third row outboard head restraints are
not removable.
The third row outboard head restraints are
designed to be folded.
When folding the third row seatbacks down,
the head restraint will automatically fold
out of the way as the seat is folded down.
The head restraint can be folded forward to
allow for better visibility when the rear seat
is unoccupied.
To fold the head restraint, press the button
on the side of the head restraint.
The head restraint will fold forward
automatically.