ECO CHEVROLET TRAILBLAZER 2021 Owner's Guide

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Instruments and Controls 91
Cluster Menu
There is an interactive display area in the
center of the instrument cluster.
Selecting menu and functions
< Type 1 >
Use the controls to open and scroll through
the different items and displays.
1.
l: Press to set or clear the menu item
when it is displayed
2.
m: Turn the band to scroll through the
menu items. 3. SELECT :
Press to access the cluster
applications. This button is also used to
return to or exit the last screen displayed on
the DIC.
Press SELECT to access the cluster
applications. Use
mto scroll through the
list of available applications. Not all
applications will be available on all vehicles.
< Type 2 >
Use the right steering wheel control to open
and scroll through the different items and
displays. Press
oto access the cluster applications.
Move thumbwheel up or down to scroll
through the list of available applications.
Not all applications will be available on all
vehicles.
Base Level Cluster
The list of available applications;
.TRIP
.VEHICLE
.ECO
Not all applications will be available on all
vehicles.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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94 Instruments and Controls
.It takes a little more or less fuel to fill up
than the gauge indicated. For example,
the gauge indicated the tank was half
full, but it actually took a little more or
less than half the tank's capacity to fill
the tank.
.The gauge moves a little while turning a
corner or speeding up.
.The gauge takes a few seconds to
stabilize after the ignition is turned on,
and goes back to empty when the
ignition is turned off.
Engine Coolant Temperature
Gauge
English Base Level, Metric Similar
English Uplevel
This gauge shows the engine coolant
temperature.
If the pointer moves toward the warning
area at the high end of the gauge, the
engine is too hot.
If the engine coolant has overheated and
the vehicle has been operating under normal
driving conditions, pull off the road, stop the
vehicle, and turn off the engine as soon as
possible. See Engine Overheating 0258.
Seat Belt Reminders
Driver Seat Belt Reminder Light
There is a driver seat belt reminder light on
the instrument cluster.
When the vehicle is started, this light
flashes and a chime may come on to remind
the driver to fasten the seat belt. Then the
light stays on solid until the belt is buckled.
This cycle may continue several times if the
driver remains or becomes unbuckled while
the vehicle is moving.
If the driver seat belt is buckled, neither the
chime nor the light comes on.
Passenger Seat Belt Reminder Light
There is a passenger seat belt reminder light
in the overhead console. See Passenger
Sensing System 056.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Instruments and Controls 95
When the vehicle is started, this light
flashes and a chime may come on to remind
in front of passenger to fasten the seat belt.
Then the light stays on solid until the belt is
buckled. This cycle may continue several
times if the passenger remains or becomes
unbuckled while the vehicle is moving.
If the passenger seat belt is buckled, neither
the chime nor the light comes on.
The front passenger seat belt reminder light
and chime may turn on if an object is put
on the seat such as a briefcase, handbag,
grocery bag, laptop, or other electronic
device. To turn off the reminder light and/or
chime, remove the object from the seat or
buckle the seat belt.
Airbag Readiness Light
This light shows if there is an electrical
problem with the airbag system. The system
check includes the airbag sensor(s), the
passenger sensing system, the pretensioners,
the airbag modules, the wiring, and thecrash sensing and diagnostic module. For
more information on the airbag system, see
Airbag System
051.
The airbag readiness light comes on for
several seconds when the vehicle is started.
If the light does not come on then, have it
fixed immediately.
{Warning
If the airbag readiness light stays on
after the vehicle is started or comes on
while driving, it means the airbag system
might not be working properly. The
airbags in the vehicle might not inflate in
a crash, or they could even inflate
without a crash. To help avoid injury,
have the vehicle serviced right away.
If there is a problem with the airbag
system, a Driver Information Center (DIC)
message may also come on.
Passenger Airbag Status Indicator
The vehicle has a passenger sensing system.
See Passenger Sensing System 056. The
overhead console has a passenger airbag
status indicator.
United States
Canada
When the vehicle is started, the passenger
airbag status indicator will light ON and OFF,
or the symbol for on and off, for several
seconds as a system check. Then, after
several more seconds, the status indicator
will light either ON or OFF, or either the on

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
96 Instruments and Controls
or off symbol, to let you know the status of
the front outboard passenger frontal airbag
and knee airbag.
If the word ON, or the on symbol, is lit on
the passenger airbag status indicator, it
means that the front outboard passenger
frontal airbag and knee airbag are allowed
to inflate.
If the word OFF, or the off symbol is lit, on
the airbag status indicator, it means that
the passenger sensing system has turned off
the front outboard passenger frontal airbag
and knee airbag.
If, after several seconds, both status
indicator lights remain on, or if there are no
lights at all, there may be a problem with
the lights or the passenger sensing system.
See your dealer for service.
{Warning
If the airbag readiness light ever comes
on and stays on, it means that
something may be wrong with the airbag
system. To help avoid injury to yourself
or others, have the vehicle serviced right
(Continued)
Warning (Continued)
away. SeeAirbag Readiness Light 095
for more information, including important
safety information.
Charging System Light
The charging system light comes on briefly
when the ignition is turned on, but the
engine is not running, as a check to show
the light is working. The light turns off
when the engine is started. If it does not,
have the vehicle serviced by your dealer.
If the light stays on, or comes on while
driving, there may be a problem with the
electrical charging system. Have it checked
by your dealer. Driving while this light is on
could drain the battery.
When this light comes on, the Driver
Information Center (DIC) also displays a
message. If a short distance must be driven with the
light on, be sure to turn off all accessories,
such as the radio and air conditioner.
Malfunction Indicator Lamp
(Check Engine Light)
This light is part of the vehicle’s emission
control on-board diagnostic system. If this
light is on while the engine is running, a
malfunction has been detected and the
vehicle may require service. The light should
come on to show that it is working when
the ignition is in Service Mode. See
Ignition
Positions (Key Access) 0191 or
Ignition Positions (Keyless Access) 0192.
Malfunctions are often indicated by the
system before any problem is noticeable.
Being aware of the light and seeking service
promptly when it comes on may prevent
damage.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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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-
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104 Instruments and Controls
Door Ajar Light
This light comes on when a door is open or
not securely latched. Before driving, check
that all doors are properly closed.
Information Displays
Driver Information Center (DIC)
(Base Level)
The DIC displays information about your
vehicle. It also displays warning messages if
a system problem is detected. SeeVehicle
Messages 0109. All messages appear in the
DIC display in the center of the instrument
cluster.
DIC Operation and Displays
.TRIP
.VEHICLE
.ECO
Some of the displayed functions differ
between vehicle driving and standstill and
some functions are only active when the
vehicle is driving. See Vehicle Personalization
0 110.
< Type 1 >
The DIC has different displays which can be
accessed by using the DIC buttons on the
turn signal lever.
DIC Buttons
1.
l: Press to set, or press and hold to
clear, the menu item displayed.
2.
m: Use the band to scroll through the
items in each menu.
3. SELECT : Press to access the cluster
applications. This button is also used to
return to or exit the last screen displayed on
the DIC.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Instruments and Controls 105
< Type 2 >
worx:Move thumbwheel up (w) or
down (
x) in a list.
oorp: Press to move between the
interactive display zones in the cluster.
Thumbwheel : Press to open a menu or
select a menu item. Press and hold to reset
values on certain screens.
Trip/Fuel Menu (TRIP) Items
Press SELECT on the turn signal lever until
the VEHICLE menu is displayed. Use
mor
thumbwheel up/down to scroll through the menu items. Not all items are available on
every vehicle. The following is a list of all
possible menu items:
Speed :
Shows the vehicle speed in either
kilometers per hour (km/h) or miles per
hour (mph).
Trip 1/2 or A/B : Shows the current distance
traveled, in either kilometers (km) or
miles (mi), since the trip odometer was last
reset.
This also shows the approximate average
liters per 100 kilometers (L/100 km) or miles
per gallon (mpg). This number is calculated
based on the number of L/100 km (mpg)
recorded since the last time this menu item
was reset. This number reflects only the
approximate average fuel economy that the
vehicle has right now, and will change as
driving conditions change.
Fuel Range : Shows the approximate
distance the vehicle can be driven without
refueling. LOW will be displayed when the
vehicle is low on fuel. The fuel range
estimate is based on an average of the
vehicle's fuel economy over recent driving
history and the amount of fuel remaining in
the fuel tank. Instantaneous Fuel Economy :
Displays the
current fuel economy in liters per
100 kilometers (L/100 km) or miles per
gallon (mpg). This number reflects only the
approximate fuel economy that the vehicle
has right now and changes frequently as
driving conditions change. This display
cannot be reset.
Vehicle Information Menu (VEHICLE)
Items
Press MENU on the turn signal lever until
the VEHICLE menu is displayed. Use
mor
thumbwheel up/down to scroll through the
menu items. Not all items are available on
every vehicle. The following is a list of all
possible menu items:
Remaining Oil Life : Shows an estimate of
the oil's remaining useful life. If REMAINING
OIL LIFE 99% is displayed, that means 99%
of the current oil life remains.
When the remaining oil life is low, the
CHANGE ENGINE OIL SOON message will
appear on the display. The oil should be
changed as soon as possible. See Engine Oil
0 250. In addition to the engine oil life
system monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule 0316.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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106 Instruments and Controls
The Oil Life display must be reset after each
oil change. It will not reset itself. Do not
reset the Oil Life display at any time other
than when the oil has just been changed.
It cannot be reset accurately until the next
oil change. To reset the engine oil life
system, press and hold
lor thumbwheel
for several seconds while the Oil Life display
is active. See Engine Oil Life System 0252.
Air Filter Life : Shows an estimate of the
engine air filter’s remaining useful life and
the state of the system. Engine Air Filter Life
95% means 95% of the current air filter life
remains. Messages will display based on the
engine air filter life and the state of the
system. When the REPLACE AT NEXT OIL
CHANGE message displays, the engine air
filter should be replaced at the time of the
next oil change. When the REPLACE SOON
message displays, the engine air filter
should be replaced at the earliest
convenience.
The Air Filter Life display must be reset after
the engine air filter replacement. To reset,
see Engine Air Filter Life System 0253.
Tire Pressure : Shows the approximate
pressures of all four tires. Tire pressure is
displayed in either kilopascal (kPa) or in
pounds per square inch (psi). If the pressure is low, the value for that
tire is shown in amber. See
Tire Pressure
Monitor System 0286 and
Tire Pressure Monitor Operation 0287.
Following Distance : When Adaptive Cruise
Control (ACC) is not engaged, the current
follow time to the vehicle ahead is displayed
as a time value on this page. If equipped
and when ACC has been engaged, the
display switches to the gap setting page.
This page shows the current gap setting
along with the vehicle ahead indicator.
Units : Press
lor thumbwheel on the turn
signal lever while units is displayed. Select
imperial or metric units by turning adjuster
wheel. Confirm by pressing
lor
thumbwheel.
ECO Drive Assist Menu (ECO) Items
This menu is only available on some
vehicles. Press MENU on the turn signal
lever until the ECO menu is displayed. Use
mor thumbwheel up/down to scroll
through the menu items. Not all items are
available on every vehicle. The following is a
list of all possible menu items: Fuel Economy :
The center displays the
approximate instantaneous fuel economy as
a number and bar graph. Displayed above
the bar graph is a running average of fuel
economy for the most recently traveled
selected distance. Displayed below the bar
graph is the best average fuel economy that
has been achieved for the selected distance.
The selected distance is displayed at the top
of the page as “last xxx mi/km.”
Top Consumers : List of top comfort
consumers currently switched on is
displayed in descending order. Fuel saving
potential is indicated.
During sporadic driving conditions, the
engine will activate the heated rear window
automatically. In this event, the heated rear
window is indicated as one of the top
consumers, without activation by the driver.
Economy Trend : Shows history of the
Average Fuel Economy from the last 50 km
(30 mi). Each bar represents about 5 km
(3 mi) of driving. During driving the bars will
shift to always reflect the most recent
distance on the right side. Press and hold
lor thumbwheel to clear the graph.
ECO Index : Provides feedback on the
efficiency of current driving behavior. The
bar graph shows a value that is based on

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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108 Instruments and Controls
Thumbwheel :Press to open a menu or
select a menu item. Press and hold to reset
values on certain screens.
DIC Info Pages
The following is the list of all possible DIC
info page displays. Some may not be
available for your particular vehicle. Some
items may not be turned on by default but
can be turned on through the Options app.
See “DIC Info Page Options” earlier in this
section.
Speed : Shows the vehicle speed in either
kilometers per hour (km/h) or miles per
hour (mph). The vehicle odometer is also
shown on this page.
Trip 1 or Trip 2, Average Fuel Economy :
Shows the current distance traveled, in
either kilometers (km) or miles (mi), since
the trip odometer was last reset.
The Average Fuel Economy display shows
the approximate average liters per
100 kilometers (L/100 km) or miles per
gallon (mpg). This number is calculated
based on the number of L/100 km (mpg)
recorded since the last time this menu item
was reset. This number reflects only the approximate average fuel economy that the
vehicle has right now, and will change as
driving conditions change.
Fuel Range and Instantaneous Fuel
Economy :
Shows the approximate distance
the vehicle can be driven without refueling.
LOW will be displayed when the vehicle is
low on fuel. The fuel range estimate is
based on an average of the vehicle's fuel
economy over recent driving history and the
amount of fuel remaining in the fuel tank.
The Instantaneous Fuel Economy display
shows the current fuel economy in either
liters per 100 kilometers (L/100 km) or miles
per gallon (mpg). This number reflects only
the approximate fuel economy that the
vehicle has right now and changes
frequently as driving conditions change.
Oil Life : Shows an estimate of the oil's
remaining useful life. If REMAINING OIL LIFE
99% is displayed, that means 99% of the
current oil life remains.
When the remaining oil life is low, the
CHANGE ENGINE OIL SOON message will
appear on the display. The oil should be
changed as soon as possible. See Engine Oil
0 250. In addition to the engine oil life system monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule
0316.
The Oil Life display must be reset after each
oil change. It will not reset itself. Do not
reset the Oil Life display at any time other
than when the oil has just been changed.
It cannot be reset accurately until the next
oil change. To reset the engine oil life
system, press and hold the center toggle
switch for several seconds while the Oil Life
display is active. See Engine Oil Life System
0 252.
Tire Pressure : Shows the approximate
pressures of all four tires. Tire pressure is
displayed in either kilopascal (kPa) or in
pounds per square inch (psi). If the
pressure is low, the value for that
tire is shown in amber. See Tire Pressure
Monitor System 0286 and
Tire Pressure Monitor Operation 0287.
Air Filter Life : Shows an estimate of the
engine air filter’s remaining useful life and
the state of the system. Engine Air Filter Life
95% means 95% of the current air filter life
remains. Messages will display based on the
engine air filter life and the state of the
system. When the REPLACE AT NEXT OIL
CHANGE message displays, the engine air

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Instruments and Controls 109
filter should be replaced at the time of the
next oil change. When the REPLACE SOON
message displays, the engine air filter
should be replaced at the earliest
convenience.
The Air Filter Life display must be reset after
the engine air filter replacement. To reset,
seeEngine Air Filter Life System 0253.
Fuel Economy : Displays average fuel
economy, the best fuel economy over the
selected distance, and a bar graph showing
instantaneous fuel economy.
Following Distance : When Adaptive Cruise
Control (ACC) is not engaged, the current
follow time to the vehicle ahead is displayed
as a time value on this page.
If equipped and when ACC has been
engaged, the display switches to the gap
setting page.
This page shows the current gap setting
along with the vehicle ahead indicator.
Driver Assistance : Displays the states of all
active safety systems.
Top Consumers : List of top comfort
consumers currently switched on is
displayed in descending order. Fuel saving
potential is indicated. During sporadic driving conditions, the
engine will activate the heated rear window
automatically. In this event, the heated rear
window is indicated as one of the top
consumers, without activation by the driver.
Economy Trend :
Shows history of the
Average Fuel Economy from the last 50 km
(30 mi). Each bar represents about 5 km
(3 mi) of driving. During driving the bars will
shift to always reflect the most recent
distance on the right side. Press and hold
the center toggle switch to clear the graph
or press
pto reset through the menu.
ECO Index : Provides feedback on the
efficiency of current driving behavior. The
bar graph shows a value that is based on
current fuel consumption compared to what
is expected from the vehicle with good and
bad driving habits.
Vehicle Messages
Messages displayed on the DIC indicate the
status of the vehicle or some action that
may be needed to correct a condition.
Multiple messages may appear one after
another. The messages that do not require
immediate action can be acknowledged and
cleared by pressing
V. The messages that
require immediate action cannot be cleared
until that action is performed.
All messages should be taken seriously;
clearing the message does not correct the
problem.
If a SERVICE message appears, see your
dealer.
Follow the instructions given in the
messages. The system displays messages
regarding the following topics:
.Service Messages
.Fluid Levels
.Vehicle Security
.Brakes
.Steering
.Ride Control Systems
.Driver Assistance Systems
.Cruise Control
.Lighting and Bulb Replacement
.Wiper/Washer Systems
.Doors and Windows
.Seat Belts
.Airbag Systems