2021 CHEVROLET TRAILBLAZER All wheel drive

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Introduction 5
1.Air Vents 0178.
2. Turn Signal Lever. See Turn and
Lane-Change Signals 0117.
IntelliBeam System Button (If Equipped).
See Exterior Lamp Controls 0114.
3. Instrument Cluster 089.
Driver Information Center (DIC) Display.
See Driver Information Center (DIC) (Base
Level) 0104 or
Driver Information Center (DIC) (Uplevel)
0 107.
4. Windshield Wiper/Washer 083.
Rear Window Wiper/Washer 084.
5. Light Sensor. See Automatic Headlamp
System 0116.
6. Hazard Warning Flashers 0117.
7. Infotainment. See Overview0122.
8. Climate Control Systems 0174.
Automatic Climate Control System 0176.
Heated Front Seats 040. (If Equipped).
9. USB Port 0130.
Auxiliary Jack 0132.
10. Wireless Charging 086 (If Equipped).
11. Stop/Start Disable Button. See Stop/Start
System 0195 (If Equipped). Lane Keep Assist (LKA)
0229 (If
Equipped).
Traction Control/Electronic Stability
Control 0206.
Sport Mode (If Equipped). See Driver
Mode Control 0208
All-Wheel Drive 0203 (If Equipped).
12. Electric Parking Brake 0205.
13. Shift Lever. See Automatic Transmission
0 201.
14. Power Outlets 085.
15. Engine START/STOP Button. See Ignition
Positions (Key Access) 0191 or
Ignition Positions (Keyless Access) 0192
(If Equipped).
16. Steering Wheel Controls 083.
17. Horn 083.
18. Steering Wheel Adjustment 083 (Out
of View).
19. Cruise Control 0209.
Adaptive Cruise Control (Camera) 0211 (If
Equipped).
Forward Collision Alert (FCA) System
0 223 (If Equipped).
20. Hood Release. See Hood0245. 21. Data Link Connector (DLC) (Out of View).
SeeMalfunction Indicator Lamp (Check
Engine Light) 096.
22. Instrument Panel Storage 078.
Instrument Panel Fuse Block 0277.
23. Exterior Lamp Controls 0114.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Keys, Doors, and Windows 7
{Warning
If the key is unintentionally rotated while
the vehicle is running, the ignition could
be moved out of the RUN position.
This could be caused by heavy items
hanging from the key ring, or by large or
long items attached to the key ring that
could be contacted by the driver or
steering wheel. If the ignition moves out
of the RUN position, the engine will shut
off, braking and steering power assist
may be impacted, and airbags may not
deploy. To reduce the risk of
unintentional rotation of the ignition key,
do not change the way the ignition key
and Remote Keyless Entry (RKE)
transmitter, if equipped, are connected to
the provided key rings.
The ignition key and key rings, and RKE
transmitter, if equipped, are designed to
work together as a system to reduce the
risk of unintentionally moving the key out
of the RUN position. The ignition key has a
small hole to allow attachment of the
provided key ring.
It is important that any replacement ignition
keys have a small hole. See your dealer if a
replacement key is required.
The combination and size of the rings that
came with your keys were specifically
selected for your vehicle. The rings are
connected to the key like two links of a
chain to reduce the risk of unintentionallymoving the key out of the RUN position. Do
not add any additional items to the ring
attached to the ignition key.
Attach additional items only to the second
ring, and limit added items to a few
essential keys or small, light items no larger
than an RKE transmitter.
Interference from radio-frequency
identification (RFID) tags may prevent the
key from starting the vehicle. Keep RFID
tags away from the key when starting the
vehicle. The key that is part of the Remote
Keyless Entry (RKE) transmitter can be used
for the ignition and all locks.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Seats and Restraints 51
New parts and repairs may be necessary
even if the seat belt system was not being
used at the time of the crash.
Have the seat belt pretensioners checked if
the vehicle has been in a crash, or if the
airbag readiness light stays on after you
start the vehicle or while you are driving.
SeeAirbag Readiness Light 095.
Airbag System
The vehicle has the following airbags:
.A frontal airbag for the driver
.A frontal airbag for the front outboard
passenger
.A knee airbag for the driver
.A knee airbag for the front outboard
passenger
.A seat-mounted side impact airbag for the
driver
.A seat-mounted side impact airbag for the
front outboard passenger
.Seat-mounted side impact airbags for the
second row outboard passengers
.A roof-rail airbag for the driver and for
the rear passengers seated directly behind
the driver
.A roof-rail airbag for the front outboard
passenger and the rear passengers seated
directly behind the front outboard
passenger
All vehicle airbags have the word AIRBAG on
the trim or on a label near the deployment
opening.
For frontal airbags, the word AIRBAG is on
the center of the steering wheel for the
driver and on the instrument panel for the
front outboard passenger.
For knee airbags, the word AIRBAG is on the
lower part of the instrument panel.
For seat-mounted side impact airbags, the
word AIRBAG is on the side of the seatback
or side of the seat closest to the door.
For roof-rail airbags, the word AIRBAG is on
the ceiling or trim.
Airbags are designed to supplement the
protection provided by seat belts. Even
though today's airbags are also designed to
help reduce the risk of injury from the force
of an inflating bag, all airbags must inflate
very quickly to do their job.
Here are the most important things to know
about the airbag system:{Warning
You can be severely injured or killed in a
crash if you are not wearing your seat
belt, even with airbags. Airbags are
designed to work with seat belts, not
replace them. Also, airbags are not
designed to inflate in every crash. In
some crashes seat belts are the only
restraint. See When Should an Airbag
Inflate? 053.
Wearing your seat belt during a crash
helps reduce your chance of hitting
things inside the vehicle or being ejected
from it. Airbags are “supplemental
restraints” to the seat belts. Everyone in
the vehicle should wear a seat belt
properly, whether or not there is an
airbag for that person.
{Warning
Because airbags inflate with great force
and faster than the blink of an eye,
anyone who is up against, or very close
to any airbag when it inflates can be
seriously injured or killed. Do not sit
(Continued)

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
54 Seats and Restraints
determine the severity of the impact.
Deployment thresholds can vary with
specific vehicle design.
Frontal airbags are designed to inflate in
moderate to severe frontal or near frontal
crashes to help reduce the potential for
severe injuries, mainly to the driver's or
front outboard passenger's head and chest.
Whether the frontal airbags will or should
inflate is not based primarily on how fast
the vehicle is traveling. It depends on what
is hit, the direction of the impact, and how
quickly the vehicle slows down.
Frontal airbags may inflate at different crash
speeds depending on whether the vehicle
hits an object straight on or at an angle,
and whether the object is fixed or moving,
rigid or deformable, narrow or wide.
Frontal airbags are not intended to inflate
during vehicle rollovers, in rear impacts,
or in many side impacts.
In addition, the vehicle has advanced
technology frontal airbags. Advanced
technology frontal airbags adjust the
restraint according to crash severity.Knee airbags are designed to inflate in
moderate to severe frontal or near frontal
impacts. Knee airbags are not designed to
inflate during vehicle rollovers, in rear
impacts, or in many side impacts.
Seat-mounted side impact airbags are
designed to inflate in moderate to severe
side crashes, depending on the location of
the impact. These airbags are also designed
to inflate in some moderate to severe or
near-frontal impacts that could result in the
occupant moving toward the side of the
vehicle. Seat-mounted side impact airbags
are not designed to inflate in rollovers,
or rear impacts. A seat-mounted side impact
airbag is designed to inflate on the side of
the vehicle that is struck.
Roof-rail airbags are designed to inflate in
moderate to severe side crashes depending
on the location of the impact. In addition,
these roof-rail airbags are designed to inflate
during a rollover or in a severe frontal
impact. Roof-rail airbags are not designed to
inflate in rear impacts. Both roof-rail airbags
will inflate when either side of the vehicle is
struck or if the sensing system predicts that
the vehicle is about to roll over on its side,
or in a severe frontal impact.In any particular crash, no one can say
whether an airbag should have inflated
simply because of the vehicle damage or
repair costs.
What Makes an Airbag Inflate?
In a deployment event, the sensing system
sends an electrical signal triggering a release
of gas from the inflator. Gas from the
inflator fills the airbag causing the bag to
break out of the cover. The inflator, the
airbag, and related hardware are all part of
the airbag module.
For airbag locations, see
Where Are the
Airbags? 052.
How Does an Airbag Restrain?
In moderate to severe frontal or near frontal
collisions, even belted occupants can contact
the steering wheel or the instrument panel.
In moderate to severe side collisions, even
belted occupants can contact the inside of
the vehicle.
Airbags supplement the protection provided
by seat belts by distributing the force of the
impact more evenly over the
occupant's body.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
82 Instruments and Controls
Instruments and Controls
Controls
Steering Wheel Adjustment . . . . . . . . . . . . 83
Steering Wheel Controls . . . . . . . . . . . . . . . . 83
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Windshield Wiper/Washer . . . . . . . . . . . . . . 83
Rear Window Wiper/Washer . . . . . . . . . . . 84
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Power Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Wireless Charging . . . . . . . . . . . . . . . . . . . . . . 86
Warning Lights, Gauges, and Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Instrument Cluster . . . . . . . . . . . . . . . . . . . . . 89
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 93
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Engine Coolant Temperature Gauge . . . . 94
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . . 94
Airbag Readiness Light . . . . . . . . . . . . . . . . . 95
Passenger Airbag Status Indicator . . . . . . 95
Charging System Light . . . . . . . . . . . . . . . . . 96
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . . . . . . . . . . . . . . . 96 Brake System Warning Light . . . . . . . . . . . 98
Electric Parking Brake Light . . . . . . . . . . . . . 98
Service Electric Parking Brake Light . . . . . 99
Antilock Brake System (ABS) Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
All-Wheel-Drive Light . . . . . . . . . . . . . . . . . . . 99
Sport Mode Light . . . . . . . . . . . . . . . . . . . . . 100
Lane Keep Assist (LKA) Light . . . . . . . . . . 100
Vehicle Ahead Indicator . . . . . . . . . . . . . . . 100
Pedestrian Ahead Indicator . . . . . . . . . . . . 100
Traction Off Light . . . . . . . . . . . . . . . . . . . . . 100
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . 101
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . . . . . . . 101
Tire Pressure Light . . . . . . . . . . . . . . . . . . . . . 101
Engine Oil Pressure Light . . . . . . . . . . . . . . 102
Low Fuel Warning Light . . . . . . . . . . . . . . . 102
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 102
High-Beam On Light . . . . . . . . . . . . . . . . . . . 103
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . 103
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 103
Cruise Control Light . . . . . . . . . . . . . . . . . . . 103
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . 104
Information Displays
Driver Information Center (DIC) (Base Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Driver Information Center (DIC) (Uplevel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . . . . . 109
Engine Power Messages . . . . . . . . . . . . . . . 110
Vehicle Speed Messages . . . . . . . . . . . . . . . 110
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . . . . . . . . 110

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
92 Instruments and Controls
SeeDriver Information Center (DIC) (Base
Level) 0104 or
Driver Information Center (DIC) (Uplevel)
0 107.
Uplevel Cluster
The list of available applications;
.{(Home)
.4(Info) : This is where the selected Driver
Information Center (DIC) displays can be
viewed. See Driver Information
.f(Audio)
.n(Navigation)
.5(Phone)
.8(Options) Not all applications will be available on all
vehicles.
Info Pages
Press
oorpto move between the
interactive display zones in the
cluster. Use the thumbwheel to
select the items to be displayed in
the Info app. See Driver Information Center
(DIC) (Base Level) 0104 or
Driver Information Center (DIC) (Uplevel)
0 107.
Audio
Press thumbwheel to select the Audio app,
then press
pto enter the Audio menu. In
the Audio menu browse for music, select
from the favorites, or change the audio
source. Move thumbwheel up (
w) or (x)
to change the station or go to the next or
previous track.
Navigation
Press thumbwheel to select the Navigation
app, then press
pto enter the Navigation
menu. If there is no active route, you can
resume the last route and turn the voice
prompts on/off. If there is an active route, press thumbwheel to cancel or resume route
guidance or turn the voice prompts on
or off.
Phone
Press thumbwheel to select the Phone app,
then press
pto enter the Phone menu. In
the Phone menu, if there is no active phone
call, view recent calls, or scroll through
contacts. If there is an active call, mute the
phone or switch to handset operation.
Options
Press thumbwheel to select the Options app,
then press
pto enter the Options menu.
Move thumbwheel up (
w) or down (x) to
scroll through items in the Setting menu.
Units : Press
pwhile Units is displayed to
enter the Units menu. Choose US or metric
units by pressing thumbwheel while the
desired item is highlighted. A checkmark will
be displayed next to the selected item.
Speedometer
The speedometer shows the vehicle's speed
in either kilometers per hour (km/h) or
miles per hour (mph).

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Instruments and Controls 97
Caution
If the vehicle is driven continually with
this light on, the emission control system
may not work as well, the fuel economy
may be lower, and the vehicle may not
run smoothly. This could lead to costly
repairs that might not be covered by the
vehicle warranty.
Caution
Modifications to the engine, transmission,
exhaust, intake, or fuel system, or the
use of replacement tires that do not
meet the original tire specifications, can
cause this light to come on. This could
lead to costly repairs not covered by the
vehicle warranty. This could also affect
the vehicle’s ability to pass an Emissions
Inspection/Maintenance test. See
Accessories and Modifications0245.
If the light is flashing : A malfunction has
been detected that could damage the
emission control system and increase vehicle
emissions. Diagnosis and service may be
required. To help prevent damage, reduce vehicle
speed and avoid hard accelerations and
uphill grades. If towing a trailer, reduce the
amount of cargo being hauled as soon as
possible.
If the light continues to flash, find a safe
place to park. Turn the vehicle off and wait
at least 10 seconds before restarting the
engine. If the light is still flashing, follow
the previous guidelines and see your dealer
for service as soon as possible.
If the light is on steady :
A malfunction has
been detected. Diagnosis and service may be
required.
Check the following:
.A loose or missing fuel cap may cause
the light to come on. The diagnostic
system can detect if the fuel cap has
been left off or improperly installed. This
would allow fuel to evaporate into the
atmosphere. See Filling the Tank0232 A
few driving trips with the cap properly
installed may turn the light off.
.Poor fuel quality can cause inefficient
engine operation and poor driveability,
which may go away once the engine is
warmed up. If this occurs, change the fuel brand. It may require at least one full
tank of the proper fuel to turn the light
off. See
Recommended Fuel 0231.
If the light remains on, see your dealer.
Emissions Inspection and Maintenance
Programs
If the vehicle requires an Emissions
Inspection/Maintenance test, the test
equipment will likely connect to the
vehicle's Data Link Connector (DLC).
The DLC is under the instrument panel to
the left of the steering wheel. Connecting
devices that are not used to perform an
Emissions Inspection/Maintenance test or to
service the vehicle may affect vehicle
operation. See Add-On Electrical Equipment
0 241. See your dealer if assistance is
needed.
The vehicle may not pass inspection if:
.The light is on when the engine is
running.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Instruments and Controls 99
Parking Brake system. A message may also
display in the Driver Information
Center (DIC).
If the light does not come on, or remains
flashing, see your dealer.
Service Electric Parking Brake
Light
This light should come on briefly when
starting the vehicle. If it does not come on,
have it fixed so it will be ready to warn if
there is a problem.
If this light stays on, take the vehicle to
your dealer as soon as possible. See the
information for the Electric Parking Brake
underElectric Parking Brake 0205.
A message may also display in the Driver
Information Center (DIC).
Antilock Brake System (ABS)
Warning Light
This light comes on briefly when the engine
is started.
If the light does not come on, have it fixed
so it will be ready to warn if there is a
problem.
If the light comes on while driving, stop as
soon as it is safely possible and turn off the
vehicle. Then start the engine again to reset
the system. If the ABS light stays on,
or comes on again while driving, the vehicle
needs service. A chime may also sound
when the light comes on steady.
If the ABS light is the only light on, the
vehicle has regular brakes, but the antilock
brakes are not functioning. If both the ABS and the brake system
warning light are on, the vehicle's antilock
brakes are not functioning and there is a
problem with the regular brakes. See your
dealer for service.
See
Brake System Warning Light 098.
All-Wheel-Drive Light
All-Wheel-Drive LightFront-Wheel-Drive
Light
If equipped, the corresponding light comes
on when an All-Wheel Drive (AWD) mode or
Front-Wheel-Drive mode is selected. See
Driver Mode Control 0208.
If the light turns amber, there may be a
malfunction. See your dealer.