keyless CHEVROLET TRAILBLAZER 2021 Owner's Guide

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Instruments and Controls 113
Remote Door Unlock
This setting specifies whether all doors,
or just the driver door, unlock when pressing
Kon the RKE transmitter.
Touch All Doors or Driver Door.
Remote Start Auto Heat Seats
This setting automatically turns on the
heated seats when using the remote start
function on cold days.
Touch Off or On.
Passive Door Unlock
This setting specifies which doors unlock
when using the button on the driver door
handle to unlock the vehicle.
Touch All Doors or Driver Door Only.
Passive Door Lock
This setting specifies whether the vehicle
will automatically lock, or lock and alert you
after all the doors are closed, and you walk
away from the vehicle with the RKE
transmitter. See Remote Keyless Entry (RKE)
System Operation (Key Access) 09or
Remote Keyless Entry (RKE) System
Operation (Keyless Access) 011.
Touch Off, On with Horn Chirp, or On. Remote Left in Vehicle Alert
This feature sounds an alert when the RKE
transmitter is left in the vehicle. This menu
also enables Remote No Longer in Vehicle
Alert.
Touch Off or On.
Teen Driver
See
Teen Driver 0162.
Valet Mode
This will lock the infotainment system and
steering wheel controls. It may also limit
access to vehicle storage locations,
if equipped.
To enable valet mode:
1. Enter a four-digit code on the keypad.
2. Touch Enter to go to the confirmation screen.
3. Re-enter the four-digit code.
Touch Lock or Unlock to lock or unlock the
system. Touch Back to go back to the
previous menu.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Lighting 119
Front Reading Lamps
The front reading lamps are in the overhead
console.
Press the lamp lenses to turn the front
reading lamps on or off.Rear Reading Lamps
If equipped, the rear reading lamps are over
the rear seats.
Press the lamp lens to turn the rear
passenger reading lamps on or off.
Lighting Features
Entry Lighting
Some exterior lamps and interior lamps turn
on briefly at night, or in areas with limited
lighting, when
Kis pressed on the Remote
Keyless Entry (RKE) transmitter. They stay
on for about 20 seconds after door is closed. When all of the doors have been closed or
the ignition is turned on, they gradually
fade out.
This feature can be changed. See
“Vehicle
Locator Lights” underVehicle Personalization
0 110.
Exit Lighting
Some exterior lamps and interior lights
come on at night, or in areas with limited
lighting, when the driver door is opened
after the ignition is turned off. The dome
lamp comes on after the ignition is turned
off. The exterior lamps and dome lamp
remain on for a set amount of time, then
automatically turn off.
The exterior lamps turn off immediately by
turning the exterior lamp control off.
This feature can be changed. See Vehicle
Personalization 0110.
Battery Load Management
The vehicle has Electric Power Management
(EPM) that estimates the battery's
temperature and state of charge. It then
adjusts the voltage for best performance
and extended life of the battery.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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162 Infotainment System
Phone
Touch and the following may display:
.My Number: Displays the cell phone
number of the Bluetooth connected
device.
.Active Call View: Shows active call display
when answering a call.
Touch the controls on the infotainment
display to disable or enable.
.Privacy : Only show call alerts in cluster.
.Sort Contacts: Touch to sort by first or
last name.
.Re-sync phone Contacts: This allows the
device contacts to re-sync if you are
having difficulty accessing all of the
contacts on your cell phone.
OnStar Phone TTY Mode: This enables
OnStar cell phone TTY mode.
Touch Disable or Enable.
Vehicle
This menu allows adjustment of different
vehicle features. SeeVehicle Personalization
0 110.
Personal
If equipped, this menu allows adjustment of
different user profile settings. See “Users”in
Using the System 0124 for information on
setting up user profiles.
The menu may contain the following:
Name
Touch to edit your user name that will be
displayed in the vehicle.
Vehicle Account Information
Touch to view the vehicle account
information and to change the account
password.
An “unverified user account” pop-up will
display until the account information
verification process has been completed on
the Internet. Check your registered e-mail
account for an activation e-mail to complete
the verification process.
Profile Picture
Touch to choose or change your profile
picture.
Profile Identifiers
Touch to have the vehicle recognize the
identifier you choose. Touch Vehicle Key 1 and/or Vehicle Key 2.
If the Remote Keyless Entry (RKE)
transmitter is lost or stolen, see your dealer.
Security
Touch to have your profile secured with
a PIN.
Touch No or Yes.
Vehicle Name
Touch to edit your vehicle name.
Vehicle Account
Touch to view the vehicle account
information and to change the account
password.
Remove Profile
Touch to remove the profile from the
vehicle.
Touch Remove or Cancel.
Teen Driver
If equipped, this allows multiple keys to be
registered for beginner drivers to encourage
safe driving habits. When the vehicle is
started with a Teen Driver key, it will
automatically activate certain safety
systems, allow setting of some features, and

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Infotainment System 163
limit the use of others. The Report Card will
record vehicle data about driving behavior
that can be viewed later. When the vehicle
is started with a registered key, the Driver
Information Center (DIC) displays a message
that Teen Driver is active.
To access:1. Touch Settings on the Home Page, then touch Vehicle, and then Teen Driver.
2. Create a Personal Identification Number (PIN) by choosing a four-digit PIN.
Re-enter the PIN to confirm. To change
the PIN, touch Change PIN.
The PIN is required to:
.Register or unregister keys.
.Change Teen Driver settings.
.Change or clear the Teen Driver PIN.
.Access or delete Report Card data.
Register keys to activate Teen Driver and
assign restrictions to the key:
Any vehicle key can be registered, up to a
maximum of eight keys. Label the key to
tell it apart from the other keys.
For a pushbutton start system: 1. Start the engine. 2. For automatic transmissions, the vehicle
must be in P (Park). For manual
transmissions, the vehicle must be
stopped with the parking brake set.
3. From the Settings menu, touch Vehicle and then Teen Driver.
4. Enter the PIN.
5. Place the Remote Keyless Entry (RKE) transmitter key you wish to register in
the transmitter pocket. The key does not
need to be the one that started the
vehicle. See Remote Keyless Entry (RKE)
System Operation (Key Access) 09or
Remote Keyless Entry (RKE) System
Operation (Keyless Access) 011 for
transmitter pocket location.
6. From the Teen Driver menu, touch Setup Keys..If the transmitter key has not
previously been registered, the option
to add the key displays. Touch Setup
and a confirmation message displays.
Teen Driver restrictions will be
applied whenever this key is used to
operate the vehicle.
.If the transmitter key has already
been registered, the option to
remove the key displays. If Remove is
touched, the transmitter key is no longer registered. A confirmation
message displays, and Teen Driver
restrictions will not be applied if this
transmitter key is used to operate
the vehicle.
In vehicles with a pushbutton start system,
if a Teen Driver and a non-Teen Driver key
are both present at start up, the vehicle will
recognize the non-Teen Driver key to start
the vehicle. The Teen Driver settings will not
be active.
For a keyed ignition system: 1. Start the engine.
2. For automatic transmissions, the vehicle must be in P (Park). For manual
transmissions, the vehicle must be
stopped with the parking brake set.
3. From the Settings menu, touch Vehicle and then Teen Driver.
4. Enter the PIN.
5. Touch Setup Keys. The system displays instructions for registering or
unregistering a key. A confirmation
message displays.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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180 Driving and Operating
Driving and Operating
Driving Information
Driver Behavior . . . . . . . . . . . . . . . . . . . . . . . . 181
Driving Environment . . . . . . . . . . . . . . . . . . . 181
Vehicle Design . . . . . . . . . . . . . . . . . . . . . . . . . 181
Driving for Better Fuel Economy . . . . . . . 181
Distracted Driving . . . . . . . . . . . . . . . . . . . . . 182
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . 182
Impaired Driving . . . . . . . . . . . . . . . . . . . . . . . 182
Control of a Vehicle . . . . . . . . . . . . . . . . . . . 183
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 184
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 184
Driving on Wet Roads . . . . . . . . . . . . . . . . . 185
Hill and Mountain Roads . . . . . . . . . . . . . . 185
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 186
If the Vehicle Is Stuck . . . . . . . . . . . . . . . . . 187
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 187
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . . . . . . . 190
Ignition Positions (Key Access) . . . . . . . . . 191
Ignition Positions (Keyless Access) . . . . . 192
Starting the Engine . . . . . . . . . . . . . . . . . . . . 194
Stop/Start System . . . . . . . . . . . . . . . . . . . . . 195
Winter Cover . . . . . . . . . . . . . . . . . . . . . . . . . . 196Engine Heater . . . . . . . . . . . . . . . . . . . . . . . . . 198
Retained Accessory Power (RAP) . . . . . . . 199
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . 199
Shifting out of Park . . . . . . . . . . . . . . . . . . . 200
Parking over Things That Burn . . . . . . . . 200
Extended Parking . . . . . . . . . . . . . . . . . . . . . 200
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 200
Running the Vehicle While Parked . . . . . 201
Automatic Transmission
Automatic Transmission . . . . . . . . . . . . . . . 201
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 203
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 203
Brakes
Electric Brake Boost . . . . . . . . . . . . . . . . . . . 204
Antilock Brake System (ABS) . . . . . . . . . . 204
Electric Parking Brake . . . . . . . . . . . . . . . . . 205
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . 206
Ride Control Systems
Traction Control/Electronic Stability
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Driver Mode Control . . . . . . . . . . . . . . . . . . 208
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 209
Adaptive Cruise Control (Camera) . . . . . . 211
Driver Assistance Systems
Driver Assistance Systems . . . . . . . . . . . . . 219
Assistance Systems for Parking or Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Assistance Systems for Driving . . . . . . . . 222
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . . . . . . . . . . 224
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Side Blind Zone Alert (SBZA) . . . . . . . . . . . 227
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 228
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . 229
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Recommended Fuel . . . . . . . . . . . . . . . . . . . . 231
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . 231
Fuels in Foreign Countries . . . . . . . . . . . . . 232
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . 232
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 232
Filling a Portable Fuel Container . . . . . . . 233

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
192 Driving and Operating
3. Shift the vehicle to N (Neutral). This canbe done while the vehicle is moving.
Continue braking and steer the vehicle to
a safe location.
4. Come to a complete stop. Shift to P (Park). Push the key all the way in
toward the steering column, then turn
the ignition to LOCK/OFF.
5. Set the parking brake. See Electric
Parking Brake 0205.
Caution
Use the correct key, make sure it is all
the way in —or pushed all the way in
toward the steering column when turning
off the vehicle —and turn it only with
your hand.
1. (ACC/ACCESSORY) : This position allows
features such as the infotainment system
to operate while the vehicle is off. It also
unlocks the steering column, if equipped
with a locking steering column. Use this
position if the vehicle must be pushed or
towed. See Retained Accessory Power
(RAP). From ON/RUN, push the key all
the way in toward the steering column,
then turn the key to ACC/ACCESSORY.
If the key is left in ACC/ACCESSORY with the engine off, the battery could drain
and the vehicle may not start. A warning
chime will sound when the driver door is
opened and the key is in the ignition.
2. (ON/RUN) : This position can be used to
operate the electrical accessories and to
display some instrument cluster warning
and indicator lights. This position can
also be used for service and diagnostics,
and to verify the proper operation of the
malfunction indicator lamp as may be
required for emission inspection
purposes. The switch stays in this
position when the engine is running. The
transmission is also unlocked in this
position on automatic transmission
vehicles.
3. (START) : This is the position that starts
the engine. When the engine starts,
release the key. The ignition returns to
ON/RUN for driving.
Ignition Positions (Keyless Access)
The vehicle has an electronic keyless ignition
with pushbutton start.
The Remote Keyless Entry (RKE) transmitter
must be in the vehicle for the system to
operate. If the pushbutton start is not
working, the vehicle may be near a strong
radio antenna signal causing interference to
the Keyless Access system. 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-
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194 Driving and Operating
Service Mode
This power mode is available for service and
diagnostics, and to verify the proper
operation of the malfunction indicator lamp
as may be required for emission inspection
purposes. With the vehicle off and the brake
pedal not applied, pressing and holding the
button for more than five seconds will place
the vehicle in Service Mode. The instruments
and audio systems will operate as they do
in ON/RUN, but the vehicle will not be able
to be driven. The engine will not start in
Service Mode. Press the button again to turn
the vehicle off.
Starting the Engine
Move the shift lever to P (Park) or
N (Neutral). The engine will not start in any
other position. To restart the engine when
the vehicle is already moving, use
N (Neutral) only.
Caution
Do not try to shift to P (Park) if the
vehicle is moving. If you do, you could
damage the transmission. Shift to P (Park)
only when the vehicle is stopped.
Caution
If you add electrical parts or accessories,
you could change the way the engine
operates. Any resulting damage would
not be covered by the vehicle warranty.
SeeAdd-On Electrical Equipment 0241.
Starting Procedure (Key Access)
1. With your foot off the accelerator pedal,
turn the ignition key to START. When
the engine starts, let go of the ignition.
The idle speed will go down as the
engine gets warm. Do not race the
engine immediately after starting it.
Operate the engine and transmission
gently to allow the oil to warm up and
lubricate all moving parts.
Caution
Cranking the engine for long periods of
time, by returning the ignition to the
START position immediately after
cranking has ended, can overheat and
damage the cranking motor, and drain
the battery. Wait at least 15 seconds
between each try, to let the cranking
motor cool down. 2. If the engine does not start after five to
10 seconds, especially in very cold
weather (below −18 °C or 0 °F), it could
be flooded with too much gasoline. Try
pushing the accelerator pedal all the way
to the floor and holding it there as you
hold the key in START for up to a
maximum of 15 seconds. Wait at least
15 seconds between each try, to allow
the cranking motor to cool down. When
the engine starts, let go of the key and
the accelerator. If the vehicle starts
briefly but then stops again, do the
same thing. This clears the extra gasoline
from the engine.
Do not race the engine immediately
after starting it.
Operate the engine and transmission
gently until the oil warms up and
lubricates all moving parts.Starting Procedure (Keyless Access)
1. With the Keyless Access system, the Remote Keyless Entry (RKE) transmitter
must be in the vehicle. Press ENGINE
START/STOP with the brake pedal
applied. When the engine begins
cranking, let go of the button.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Driving and Operating 195
The idle speed will go down as the
engine gets warm. Do not race the
engine immediately after starting it.
If the RKE transmitter is not in the
vehicle, if there is interference, or if the
RKE battery is low, a Driver Information
Center (DIC) will display a message. See
Remote Keyless Entry (RKE) System
Operation (Key Access)09or
Remote Keyless Entry (RKE) System
Operation (Keyless Access) 011
Caution
Cranking the engine for long periods of
time, by returning the ignition to the
START position immediately after
cranking has ended, can overheat and
damage the cranking motor, and drain
the battery. Wait at least 15 seconds
between each try, to let the cranking
motor cool down.
2. If the engine does not start after five to 10 seconds, especially in very cold
weather (below −18 °C or 0 °F), it could
be flooded with too much gasoline. Try
pushing the accelerator pedal all the way
to the floor and holding it there as you
press ENGINE START/ STOP. Wait at least 15 seconds between each try, to allow
the cranking motor to cool down. When
the engine starts, release the accelerator.
If the vehicle starts briefly but then
stops again, do the same thing. This
clears the extra gasoline from the
engine. Do not race the engine
immediately after starting it. Operate
the engine and transmission gently until
the oil warms up and lubricates all
moving parts.
Stop/Start System
The Stop/Start system will shut off the
engine to help conserve fuel. It has
components designed for the increased
number of starts.
{Warning
The automatic engine Stop/Start feature
causes the engine to shut off while the
vehicle is still on. Do not exit the vehicle
before shifting to P (Park). The vehicle
may restart and move unexpectedly.
Always shift to P (Park), and then turn
the ignition off before exiting the vehicle.
Auto Engine Stop/Start
When the brakes are applied and the vehicle
is at a complete stop, the engine may turn
off. When stopped, the tachometer displays
AUTO STOP. See
Tachometer093. When the
brake pedal is released or the accelerator
pedal is pressed, the engine will restart.
To maintain vehicle performance, other
conditions may cause the engine to
automatically restart before the brake pedal
is released.
Auto Stops may not occur and/or auto
restarts may occur because:
.The climate control settings require the
engine to be running to cool or heat the
vehicle interior.
.The vehicle battery charge is low.
.The vehicle battery has recently been
disconnected.
.Minimum vehicle speed has not been
reached since the last Auto Stop.
.The accelerator pedal is pressed.
.The engine or transmission is not at the
required operating temperature.
.The outside temperature is not in the
required operating range.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Driving and Operating 233
The fuel door unlocks when the vehicle
doors are unlocked. SeeRemote Keyless
Entry (RKE) System Operation (Key Access)
0 9or
Remote Keyless Entry (RKE) System
Operation (Keyless Access) 011.
To open the fuel door, push and release the
rearward center edge of the door.
Turn the fuel cap counterclockwise to
remove. When refueling, hang the fuel cap
from the hook on the fuel door. Fully insert
and latch the fill nozzle, then begin fueling.
{Warning
Overfilling the fuel tank by more than
three clicks of a standard fill nozzle may
cause:
.Vehicle performance issues, including
engine stalling and damage to the fuel
system.
.Fuel spills.
.Under certain conditions, fuel fires.
Be careful not to spill fuel. Wait five seconds
after you have finished pumping before
removing the fill nozzle. Clean fuel from
painted surfaces as soon as possible. See
Exterior Care 0307. Reinstall the cap by
turning it clockwise until it clicks. Push the
fuel door closed until it latches.
{Warning
If a fire starts while you are refueling, do
not remove the fill nozzle. Shut off the
flow of fuel by shutting off the pump or
by notifying the station attendant. Leave
the area immediately.
Caution
If a new fuel cap is needed, get the right
type of cap from your dealer. The wrong
type of fuel cap may not fit properly,
may turn on the malfunction indicator
lamp, and could damage the fuel system
and emissions system. See Malfunction
Indicator Lamp (Check Engine Light) 096.
Filling a Portable Fuel Container
{Warning
Never fill a portable fuel container while
it is in the vehicle. Static electricity
discharge from the container can ignite
the fuel vapor. You or others could be
badly burned and the vehicle could be
damaged. To help avoid injury to you
and others:
.Dispense fuel only into approved
containers.
.Do not fill a container while it is
inside a vehicle, in a vehicle's trunk, in
a pickup bed, or on any surface other
than the ground.
(Continued)

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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244 Vehicle Care
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314General Information
For service and parts needs, visit your
dealer. You will receive genuine GM parts
and GM-trained and supported service
people.
Genuine GM parts have one of these marks:
California Proposition 65 Warning
{Warning
Most motor vehicles, including this one,
as well as many of its service parts and
fluids, contain and/or emit chemicals
known to the State of California to cause
(Continued)
Warning (Continued)
cancer and birth defects or other
reproductive harm. Engine exhaust, many
parts and systems, many fluids, and
some component wear by-products
contain and/or emit these chemicals. For
more information go to
www.P65Warnings.ca.gov/
passenger-vehicle.
See Battery - North America 0261 and
Jump Starting - North America 0302 and
the back cover.
California Perchlorate Materials
Requirements
Certain types of automotive applications,
such as airbag initiators, seat belt
pretensioners, and lithium batteries
contained in Remote Keyless Entry
transmitters, may contain perchlorate
materials. Special handling may be
necessary. For additional information, see
www.dtsc.ca.gov/hazardouswaste/
perchlorate.