2021 CHEVROLET BLAZER engine

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
106 Instruments and Controls
Caution (Continued)
by the vehicle warranty. Check the oil
level as soon as possible. Add oil if
required, but if the oil level is within the
operating range and the oil pressure is
still low, have the vehicle serviced.
Always follow the maintenance schedule
for changing engine oil.
This light should come on briefly as the
engine is started. If it does not come on,
have the vehicle serviced by your dealer.
If the light comes on and stays on, it means
that oil is not flowing through the engine
properly. The vehicle could be low on oil
and might have some other system
problem. See your dealer.
Low Fuel Warning Light
A Low Fuel Warning Light near the fuel
gauge comes on briefly when the ignition is
turned on as a check to show it is working.
It also comes on when the fuel gauge
indicator nears empty. The light turns off
when fuel is added. If it does not, have the
vehicle serviced.
Security Light
The security light should come on briefly as
the engine is started. If it does not come on,
have the vehicle serviced by your dealer.
If the system is working normally, the
indicator light turns off.If the light stays on and the engine does
not start, there could be a problem with the
theft-deterrent system. See
Immobilizer
Operation 024.
High-Beam On Light
This light comes on when the high-beam
headlamps are in use. See Headlamp High/
Low-Beam Changer 0122.
IntelliBeam Light
This light comes on when the IntelliBeam
system, if equipped, is enabled. See Exterior
Lamp Controls 0121.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Instruments and Controls 109
recent driving history and the amount of
fuel remaining in the fuel tank. If equipped,
also shows the instantaneous fuel economy.
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
0 262. In addition to the engine oil life
system monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule 0332.
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, see Engine Oil Life
System 0264.
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 0265.
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
0 296 and
Tire Pressure Monitor Operation 0297.
Average Speed : Displays the average
vehicle speed of the vehicle in kilometers
per hour (km/h) or miles per hour (mph).
This average is based on the various vehicle
speeds recorded since the last reset. Reset
the average speed by pressing the
thumbwheel while this display is active to
show a confirmation window to select yes
or no and press the thumbwheel.
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.”
Press the thumbwheel to select the distance
or reset best value. Use
yorzto choose
the distance and press the thumbwheel.
Scroll
yorzto select Reset Best Score.
Press the thumbwheel to reset the best
average fuel economy. After reset, the best
value displays “-,-”until the selected
distance has been traveled.
The display provides information on how
current driving behavior affects the running
average and how well recent driving
compares to the best that has been
achieved for the selected distance.
Follow Distance/Gap Setting : If equipped,
the current follow time to the vehicle ahead
is displayed as a time value on this page.
When Adaptive Cruise Control (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.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
110 Instruments and Controls
Driver Assistance :If equipped, shows
information for Lane Keep Assist (LKA), Lane
Departure Warning (LDW), and Forward
Collision Alert (FCA).
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 the
thumbwheel to open the menu while this
display is active to clear the graph. Select
yes or no and press the thumbwheel.
Timer : This display can be used as a timer.
To start the timer, press the thumbwheel to
open the menu while this display is active.
Use
yorzto select Start Timer or Reset.
Press the thumbwheel. To stop the timer,
press the thumbwheel while this display is
active. The display will show the amount of
time that has passed since the timer was
last reset.
Speed Limit : Shows sign information, which
comes from a roadway database in the
onboard navigation, if equipped. The sign
will show “− −”when there is no detected
speed limit or the system is unavailable. Press the thumbwheel while this display is
active to toggle Speed Limit sign on or off.
Speed limit signs in your vehicle display
may vary from actual road speed depending
on the version of your current
navigation map.
Battery Voltage :
Displays the current
battery voltage, if equipped. Battery voltage
changes are normal while driving. See
Charging System Light 0100. If there is a
problem with the battery charging system, a
DIC will display a message.
Oil Pressure : Oil pressure is displayed in
either kilopascal (kPa) or in pounds per
square inch (psi). Oil pressure can vary with
engine speed, outside temperature, and oil
viscosity. On some models, the oil pump will
vary engine oil pressure according to engine
needs. Oil pressure may change quickly as
the engine speed or load varies. This is
normal. If the oil pressure warning light or
DIC message indicates oil pressure outside
the normal operating range, check the
vehicle's oil as soon as possible.
Coolant Temperature : Displays the coolant
temperature in degrees Celsius (°C) or
degrees Fahrenheit (°F).
Driver Information Center (DIC)
(Uplevel)
The DIC displays are shown in the center of
the instrument cluster in the Info app.
See Instrument Cluster (Base and Midlevel)
0 90 or
Instrument Cluster (Uplevel) 093. The
displays show the status of many vehicle
systems.
SorT: Press to move left or right
between the interactive display zones in the
cluster. Press the thumbwheel to select.
yorz: Use the thumbwheel to scroll up
or down in a list. Press the thumbwheel to
select.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
112 Instruments and Controls
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
0 262. In addition to the engine oil life
system monitoring the oil life, additional
maintenance is recommended. See
Maintenance Schedule 0332.
The Oil Life display must be reset after each
oil change. It will not reset itself. Do not to
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, see Engine Oil Life
System 0264.
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 0265.
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
0 296 and
Tire Pressure Monitor Operation 0297.
Best Fuel Economy : Displays average fuel
economy, the best fuel economy over the
selected distance, and a bar graph showing
instantaneous fuel economy.
Press
Tto change the selected distance.
Press and hold the thumbwheel while this
display is active to reset the best fuel
economy and average fuel economy. This
display can also be reset by selecting reset
in the menu. Top Consumers :
Shows a list of the features
that are currently impacting the fuel
economy, in order from highest to lowest.
If a feature is turned off, it will be removed
from the list.
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 thumbwheel to clear the graph or press
Tto reset through the menu.
Speed Signs : Shows sign information, which
comes from a roadway database in the
onboard navigation.
Off Road : Displays vehicle pitch and roll
information, road wheel angle, and
four-wheel drive (4WD) status.
Following Distance : The following distance
to a moving vehicle ahead in your path is
indicated in following time in seconds. See
Forward Collision Alert (FCA) System 0230.
Transmission Fluid Temperature Gauge :
Shows the temperature of the automatic
transmission fluid in either degrees Celsius
(°C) or degrees Fahrenheit (°F).
Blank Page : Shows no information.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Instruments and Controls 113
Vehicle Messages
Messages displayed on the Driver
Information Center (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 the thumbwheel. 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
.Engine and Transmission
.Tire Pressure
.Battery
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the vehicle's
propulsion power is reduced. A reduction in
propulsion power can affect the vehicle's
ability to accelerate. If this message is on,
but there is no observed reduction in
performance, proceed to your destination.
Under certain conditions the performance
may be reduced the next time the vehicle is
driven. The vehicle may be driven while this
message is on, but maximum acceleration
and speed may be reduced. Anytime this
message stays on, or displays repeatedly,
the vehicle should be taken to your dealer
for service as soon as possible.Under certain operating conditions,
propulsion will be disabled. Try restarting
after the ignition has been off for
30 seconds.
Vehicle Speed Messages
SPEED LIMITED TO XXX KM/H (MPH)
This message shows that the vehicle speed
has been limited to the speed displayed. The
limited speed is a protection for various
propulsion and vehicle systems, such as
lubrication, thermal, brakes, suspension,
Teen Driver if equipped, or tires.
Vehicle Personalization
The following are all possible vehicle
personalization features. Depending on the
vehicle, some may not be available.
For System, Apps, and Personal features and
functions, see
Settings0164.
To access the vehicle personalization menu: 1. Touch the Settings icon on the Home Page of the infotainment display.
2. Touch Vehicle to display a list of available options.
3. Touch to select the desired feature setting.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
114 Instruments and Controls
4. Touch9orRto turn a feature off or on.
5. Touch
zto go to the top level of the
Settings menu.
The menu may contain the following:
Rear Seat Reminder
This allows for a chime and a message when
the rear door has been opened before or
during operation of the vehicle.
Touch Off or On.
Climate and Air Quality
Touch and the following may display:
.Auto Fan Speed
.Auto Cooled Seats
.Auto Heated Seats
.Auto Defog
.Auto Rear Defog
Auto Fan Speed
This setting specifies the amount of airflow
when the climate control fan setting is
Auto Fan.
Touch Low, Medium, or High. Auto Cooled Seats
When enabled, this feature will
automatically activate ventilated seats at
the level required by the interior
temperature. See
Heated and Ventilated
Front Seats 040.
Touch Off or On.
Auto Heated Seats
When enabled, this feature will
automatically activate the heated seats at
the level required by the interior
temperature. The auto heated seats can be
turned off by using the heated seat buttons
on the center console. See Heated and
Ventilated Front Seats 040.
Touch Off or On.
Auto Defog
This setting automatically turns the front
defogger on when the engine is started.
Touch Off or On.
Auto Rear Defog
This setting automatically turns the rear
defogger on when the engine is started.
Touch Off or On.
Collision/Detection Systems
Touch and the following may display:
.Alert Type
.Forward Collision System
.Front Pedestrian Detection
.Adaptive Cruise Go Notifier
.Lane Change Alert
.Rear Camera Park Assist Symbols
.Rear Cross Traffic Alert
Alert Type
This feature will set the type of alert
received from the driver assistance systems
to help avoid crashes, either Beeps or Safety
Alert Seat vibration pulses.
Touch Beeps or Safety Alert Seat.
Forward Collision System
This setting can alert of a potential crash
with a detected vehicle ahead and can apply
brakes to help reduce a collision’s severity.
Touch Off, Alert, or Alert and Brake.
Front Pedestrian Detection
This feature may help avoid or reduce the
harm caused by front-end crashes with
nearby pedestrians.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Lighting 123
This indicator light turns on in the
instrument cluster when the high-beam
headlamps are on.
Flash-to-Pass
To flash the high beams, pull the turn signal
lever toward you, and release.
Daytime Running Lamps (DRL)
DRL can make it easier for others to see the
front of your vehicle during the day. Fully
functional DRL are required on all vehicles
first sold in Canada.
The dedicated DRL will come on when all of
the following conditions are met:
.The ignition is on.
.The exterior lamp control is in AUTO.
.The light sensor determines it is daytime.
.The parking brake is released or the
vehicle is not in P (Park).
The taillamps, instrument panel lights, and
other lamps will not be on. The DRL turn off when the headlamps are
turned to
Oor the ignition is off. For
vehicles sold in Canada, this control only
works when the vehicle is parked.
Automatic Headlamp System
When the exterior lamp control is set to
AUTO and it is dark enough outside, the
headlamps come on automatically.
There is a light sensor on top of the
instrument panel. Do not cover the sensor.
The system may also turn on the headlamps
when driving through a parking garage or
tunnel. If the vehicle is started in a dark garage, the
automatic headlamp system comes on
immediately. If it is light outside when the
vehicle leaves the garage, there is a slight
delay before the automatic headlamp
system changes to the Daytime Running
Lamps (DRL). During that delay, the
instrument cluster may not be as bright as
usual. Make sure the instrument panel
brightness control is in the full bright
position. See
Instrument Panel Illumination
Control 0124.
When it is bright enough outside, the
headlamps will turn off or may change
to DRL.
The automatic headlamp system turns off
when the exterior lamp control is turned to
Oor the ignition is off.
Lights On with Wipers
If the windshield wipers are activated in
daylight with the engine on, and the
exterior lamp control is in AUTO, the
headlamps, parking lamps, and other
exterior lamps come on. The transition time
for the lamps coming on varies based on
wiper speed. When the wipers are not

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
126 Lighting
Rear Reading Lamps
The rear reading lamps are over the rear
seats or over the rear passenger doors.
Press the lamp lens to turn the rear
passenger reading lamps on or off.
Lighting Features
Entry Lighting
Some exterior lamps turn on briefly at
night, or in areas with limited lighting,
when
Kis pressed on the RKE transmitter.
After about 30 seconds the exterior lamps
turn off. Entry lighting can be disabled
manually by turning the ignition on or to
ACC/ACCESSORY, or by pressing
Qon the
RKE transmitter. When any door is opened,
the remote unlock is pressed, or when the ignition is switched off, all interior lights
turn on and then interior lamps dim to off
within 20 seconds after all doors are closed.
The entry lighting feature for exterior
lighting can be changed. See
“Vehicle
Locator Lights” underVehicle Personalization
0 113.
Exit Lighting
Some exterior lamps 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 when any
door is opened or after the ignition is
turned off. The exterior lamps and dome
lamp remain on after the door is closed for
a set amount of time, then automatically
turn off.
The exterior lamps turn off immediately by
turning the exterior lamp control off.
The exit lighting for exterior lights can be
changed. See Vehicle Personalization 0113.
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.
When the battery's state of charge is low,
the voltage is raised slightly to quickly bring
the charge back up. When the state of
charge is high, the voltage is lowered
slightly to prevent overcharging. If the
vehicle has a voltmeter gauge or a voltage
display on the Driver Information Center
(DIC), you may see the voltage move up or
down. This is normal. If there is a problem,
an alert will be displayed.
The battery can be discharged at idle if the
electrical loads are very high. This is true for
all vehicles. This is because the generator
(alternator) may not be spinning fast
enough at idle to produce all of the power
needed for very high electrical loads.
A high electrical load occurs when several of
the following are on, such as: headlamps,
high beams, rear window defogger, climate
control fan at high speed, heated seats,
engine cooling fans, trailer loads, and loads
plugged into accessory power outlets.