2021 CHEVROLET TRAILBLAZER Liftgate

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
6 Keys, Doors, and Windows
Keys, Doors, and
Windows
Keys and Locks
Keys (Key Access) . . . . . . . . . . . . . . . . . . . . . . . 6
Keys (Keyless Access) . . . . . . . . . . . . . . . . . . . . 8
Remote Keyless Entry (RKE) System . . . . . 9
Remote Keyless Entry (RKE) SystemOperation (Key Access) . . . . . . . . . . . . . . . . 9
Remote Keyless Entry (RKE) System Operation (Keyless Access) . . . . . . . . . . . . 11
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . 17
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . 20
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 21
Automatic Door Locks . . . . . . . . . . . . . . . . . . . 21
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . 21
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 29
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 29
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Immobilizer Operation . . . . . . . . . . . . . . . . . . 30
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 31
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 31
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 31
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . . . . . . . 31
Manual Rearview Mirror . . . . . . . . . . . . . . . . 32
Automatic Dimming Rearview Mirror . . . 32
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Power Windows . . . . . . . . . . . . . . . . . . . . . . . . 32
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Keys and Locks
Keys (Key Access)
{Warning
Leaving children in a vehicle with the
ignition 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 keys in the ignition, and children or
others could be caught in the path of a
closing window. Do not leave children in
a vehicle with the ignition key.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
12 Keys, Doors, and Windows
The RKE transmitter functions may work up
to 60 m (197 ft) away from the vehicle.
Other conditions can impact the
performance of the transmitter. SeeRemote
Keyless Entry (RKE) System 09.
Q:Press to lock all doors. The turn signal
indicators may flash and/or the horn may
sound on the second press to indicate
locking. See Vehicle Personalization 0110.
If the driver door is open when
Qis
pressed, and Open Door Anti-Lockout is
enabled through vehicle personalization, all
doors will lock and then the driver door will
immediately unlock. See Vehicle
Personalization 0110. If the passenger door
is open when
Qis pressed, all doors lock. Pressing
Qmay also arm the theft-deterrent
system. See Vehicle Alarm System 029.
K:Press to unlock the driver door. Press
unlock again within five seconds to unlock
all doors. The RKE transmitter can be
programmed to unlock all doors on the first
button press. See Vehicle Personalization
0 110. When remotely unlocking the vehicle
at night the back-up lamps will come on for
about 30 seconds to light your approach to
the vehicle. The turn signal indicators may
flash to indicate unlocking. See Vehicle
Personalization 0110.
Pressing
Kwill disarm the theft-deterrent
system. See Vehicle Alarm System 029.
/:Press and releaseQand then
immediately press and hold
/for at least
four seconds to start the engine from
outside the vehicle using the RKE
transmitter. See Remote Vehicle Start 017.
7:Press and release one time to initiate
vehicle locator. The exterior lamps flash and
the horn chirps three times. Press and hold
7for three seconds to sound the panic
alarm. The horn sounds and the turn signal
lamps flash for 30 seconds, or until
7is
pressed again or the vehicle is started.
b: Press twice quickly to open or close
the liftgate.
Press once to stop the liftgate from moving.
Keyless Access Operation
With the Keyless Access system, you can
lock and unlock the doors and access the
liftgate without removing the RKE
transmitter from your pocket, purse,
briefcase, etc. The RKE transmitter should be
within 1 m (3 ft) of the liftgate or door being
opened. The buttons are 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 0110.
Keyless Unlocking/Locking from the
Driver Door
When the doors are locked and the RKE
transmitter is within 1 m (3 ft) of the driver
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 will unlock.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Keys, Doors, and Windows 13
Driver Shown, Passenger Similar
Pressing the lock/unlock button will cause
all doors to lock if any of the following
occur:
.It has been more than five seconds since
the first lock/unlock button press.
.Two lock/unlock button presses were
used to unlock all doors.
.Any vehicle door has opened and all
doors are now closed.
Keyless Unlocking/Locking from Passenger
Doors
When the doors are locked and the RKE
transmitter is within 1 m (3 ft) of the door
handle, pressing the lock/unlock button on
that door handle will unlock all doors. Pressing the lock/unlock button will cause
all doors to lock if any of the following
occur:
.The lock/unlock button was used to
unlock all doors.
.Any vehicle door has opened and all
doors are now closed.
Disable/Enable Keyless Unlocking of Exterior
Door Handles and Liftgate
If equipped, keyless unlocking of the exterior
door handles and liftgate can be disabled
and enabled.
Disabling Keyless Unlocking:
With the vehicle off, press and hold
Qand
Kon the RKE transmitter at the same time
for approximately three seconds. The turn
signal lamps will flash four times quickly to
indicate access is disabled. Using any
exterior handle to unlock the doors or open
the liftgate 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 RKE transmitter at the same time
for approximately three seconds. The turn
signal lamps will flash twice quickly to
indicate access is enabled.
Passive Locking
The vehicle will lock several seconds after all
doors are closed if the vehicle is off and at
least one RKE transmitter has been removed
or none remain in the interior.
If other electronic devices interfere with the
RKE transmitter signal, the vehicle may not
detect the RKE transmitter inside the vehicle.
If passive locking is enabled, the doors may
lock with the RKE transmitter inside the
vehicle. Do not leave the RKE transmitter in
an unattended vehicle.
To customize the doors to automatically lock
when exiting the vehicle, see “Remote Lock,
Unlock, Start” underVehicle Personalization
0 110.
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

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
14 Keys, Doors, and Windows
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 RKE
transmitter is left in the vehicle, the horn
will chirp three times after all doors are
closed. To turn on or off see Vehicle
Personalization 0110.
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 RKE transmitters inside. If an RKE
transmitter 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.
Keyless Liftgate Opening
Press the touch pad on the liftgate handle
to open the liftgate if the RKE transmitter is
within 1 m (3 ft).
Key Access
To access a vehicle with a weak transmitter
battery, see Door Locks019.
Programming Transmitters to the Vehicle
Only RKE transmitters programmed to the
vehicle will work. If a transmitter is lost or
stolen, a replacement can be purchased and
programmed through your dealer. The
vehicle can be reprogrammed so that lost or
stolen transmitters no longer work. Each
vehicle can have up to eight transmitters
matched to it.
Programming with Recognized Transmitters
A new transmitter can be programmed to
the vehicle when there are two recognized
transmitters.
To program, the vehicle must be off and all
of the transmitters, both currently
recognized and new, must be with you.
1. Place the two recognized transmitters in transmitter pocket.
2. Insert the vehicle key of the new transmitter into the key lock cylinder on
the outside of the driver door and turn
the key to the unlock position five times
within 10 seconds.
The DIC displays READY FOR REMOTE #2,
3, 4, ETC.
3. Remove the two recognized transmittersfrom transmitter pocket. Place the new
transmitter in transmitter pocket.
4. Press ENGINE START/STOP. When the transmitter is learned the DIC display
will show that it is ready to program the
next transmitter.
5. Remove the transmitter from the transmitter pocket and press the
transmitter
KorQbutton.
To program additional transmitters,
repeat Steps 3–5.
When all additional transmitters are
programmed, press and hold ENGINE
START/STOP for 12 seconds to exit
programming mode.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Keys, Doors, and Windows 19
Door Locks
{Warning
Unlocked doors can be dangerous.
.Passengers, especially children, can
easily open the doors and fall out of a
moving vehicle. The doors can be
unlocked and opened while the vehicle
is moving. The chance of being thrown
out of the vehicle in a crash is
increased if the doors are not locked.
So, all passengers should wear seat
belts properly and the doors should be
locked whenever the vehicle is driven.
.Young children who get into unlocked
vehicles may be unable to get out.
A child can be overcome by extreme
heat and can suffer permanent injuries
or even death from heat stroke.
Always lock the vehicle whenever
leaving it.
.Outsiders can easily enter through an
unlocked door when you slow down
or stop the vehicle. Locking the doors
can help prevent this from happening.To lock/unlock the doors from the outside:
.PressQorKon the Remote Keyless
Entry (RKE) transmitter. See Remote
Keyless Entry (RKE) System Operation (Key
Access) 09or
Remote Keyless Entry (RKE) System
Operation (Keyless Access) 011.
.Use the key in the driver door. The key
lock cylinder is covered with a cap.
To lock/unlock the doors from the inside:
.PressQorKon the power door lock
switch.
.Push down on the door lock knob to lock
a door.
.Pull the door handle once to unlock it.
Pull the door handle again to unlatch it. Keyless Access
The RKE transmitter must be within 1 m
(3 ft) of the liftgate or door being opened.
Press the button on the door handle to
open. See
Remote Keyless Entry (RKE)
System Operation (Key Access) 09or
Remote Keyless Entry (RKE) System
Operation (Keyless Access) 011.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
22 Keys, Doors, and Windows
If equipped, the safety lock is on the inside
edge of the rear doors. To use the
safety lock:1. Move the lever up to the lock position.
2. Close the door.
3. Do the same for the other rear door.
To open a rear door when the safety lock
is on: 1. Unlock the door by activating the inside handle, by pressing the power door lock
switch, or by using the Remote Keyless
Entry (RKE) transmitter.
2. Open the door from the outside.
When the safety lock is enabled, adults and
older children will not be able to open the
rear door from the inside. Cancel the safety
locks to enable the doors to open from the
inside.
To cancel the safety lock: 1. Unlock the door and open it from the outside.
2. Move the lever down to unlock. Do the same for the other door.Doors
Liftgate
{Warning
Exhaust gases can enter the vehicle if it
is driven with the liftgate or trunk/hatch
open, or with any objects that pass
through the seal between the body and
the trunk/hatch or liftgate. Engine
exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can
cause unconsciousness and even death.
If the vehicle must be driven with the
liftgate or trunk/hatch open:
.Close all of the windows.
.Fully open the air outlets on or under
the instrument panel.
.Adjust the climate control system to a
setting that brings in only outside air
and set the fan speed to the highest
setting. See “Climate Control Systems”
in the Index.
(Continued)
Warning (Continued)
.If the vehicle is equipped with a
power liftgate, disable the power
liftgate function.
See Engine Exhaust 0200.
Caution
To avoid damage to the liftgate or
liftgate glass, make sure the area above
and behind the liftgate is clear before
opening it.
Manual Liftgate
To unlock the liftgate, pressKon the
power door lock switch or press
Kon the
Remote Keyless Entry (RKE) transmitter
twice within five seconds. See Remote
Keyless Entry (RKE) System Operation (Key
Access) 09or
Remote Keyless Entry (RKE) System
Operation (Keyless Access) 011.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Keys, Doors, and Windows 23
To open the liftgate, press the touch pad
under the liftgate handle and lift up.
With Keyless Access, the liftgate can be
opened when locked if the RKE transmitter
is within 1 m (3 ft) of the touch pad. See
Remote Keyless Entry (RKE) System
Operation (Key Access)09or
Remote Keyless Entry (RKE) System
Operation (Keyless Access) 011.
Use the pull cup to lower and close the
liftgate. Do not press the touch pad while
closing the liftgate. This may cause the
liftgate to be unlatched. The liftgate has an electric latch. If the
battery is disconnected or has low voltage,
the liftgate will not open. The liftgate will
resume operation when the battery is
reconnected and charged.
Always close the liftgate before driving.
Power Liftgate Operation
{Warning
You or others could be injured if caught
in the path of the power liftgate. Make
sure there is no one in the way of the
liftgate as it is opening and closing.
Caution
Driving with an open and unsecured
liftgate may result in damage to the
power liftgate components.
If equipped, the power liftgate switch is on
the driver door. The vehicle must be in
P (Park).
The modes are:
.MAX: Opens to maximum height.
.3/4: Opens to a reduced height that can
be set from 3/4 to fully open. Use to
prevent the liftgate from opening into
overhead obstructions such as a garage
door or roof-mounted cargo. The liftgate
can be manually opened all the way.
.OFF: Opens manually only.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
24 Keys, Doors, and Windows
To power open or close the liftgate, select
MAX or 3/4 mode.
.Pressbtwice quickly on the RKE
transmitter until the liftgate moves.
.Press8on the driver door. The driver
door must either be unlocked or locked
without the security armed.
.Press the touch pad on the underside of
the liftgate handle after unlocking all
doors. A locked vehicle can be opened if
the RKE transmitter is within 1 m (3 ft) of
the touch pad.
.Presslon the bottom edge of the
liftgate to the left of the latch to close. Press any liftgate button, the touch pad,
or
bon the RKE transmitter while the
liftgate is moving to stop it. Pressing any
liftgate button or pressing
btwice quickly
on the RKE transmitter restarts the
operation in the reverse direction. Pressing
the touch pad on the liftgate handle will
restart the motion, but only in the opening
direction.
Caution
Manually forcing the liftgate to open or
close during a power cycle can damage
the vehicle. Allow the power cycle to
complete.
The power liftgate may be temporarily
disabled under extreme low temperatures,
or after repeated power cycling over a short
period of time. If this occurs, the liftgate can
still be operated manually.
If the vehicle is shifted out of P (Park) while
the power function is in progress, the
liftgate will continue to completion. If the
vehicle is accelerated before the liftgate has
completed moving, the liftgate may stop or
reverse direction. Check for DIC messages
and make sure the liftgate is closed and
latched before driving. Falling Liftgate Detection
If the power liftgate automatically closes
after a power opening cycle, it indicates that
the system is reacting to excess weight on
the liftgate or a possible support strut
failure. A repetitive chime will sound while
the falling liftgate detection feature is
operating. Remove any excess weight. If the
liftgate continues to automatically close
after opening, see your dealer for service
before using the power liftgate.
Interfering with the power liftgate motion
or manually closing the liftgate too quickly
after power opening may resemble a
support strut failure. This could also activate
the falling liftgate detection feature. Allow
the liftgate to complete its operation and
wait a few seconds before manually closing
the liftgate.
Obstacle Detection Features
If the liftgate encounters an obstacle during
a power open or close cycle, the liftgate will
automatically reverse direction and move a
short distance away from the obstacle. After
removing the obstruction, the power liftgate
operation can be used again. If the liftgate
encounters multiple obstacles on the same
power cycle, the power function will