lights CHEVROLET TRAILBLAZER 2021 User Guide

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
118 Lighting
Interior Lighting
Instrument Panel Illumination
Control
The brightness of the instrument cluster
display, infotainment display and controls,
steering wheel controls, and all other
illuminated controls, as well as feature
status indicators can be adjusted.
The knob for this feature is on the
instrument panel beside the steering
column.
Push the knob in all the way until it extends
out and then turn the knob clockwise or
counterclockwise to brighten or dim the
lights.
Courtesy Lamps
Courtesy lamps come on when any door is
opened, the
Kon the remote key is
pressed, or when the ignition is
switched off.
Dome Lamps
The front dome lamp controls are in the
overhead console.
(: Press to turn the lamps off, even when
a door is open.
H: When the button is returned to the
middle position, the lamps turn on
automatically when a door is opened.
': Press to turn on the dome lamps.
If equipped, the rear dome lamp controls are
in the headliner above the rear seats.
Reading Lamps
There are reading lamps on the overhead
console and over the rear seats. These lamps
come on when any door is opened.

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-
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-
14400528) - 2021 - CRC - 11/7/19
Driving and Operating 193
Stopping the Engine/Off (No Indicator
Lights)
When the vehicle is stopped, press ENGINE
START/STOP once to turn the engine off.
To shift out of P (Park), the vehicle must be
on and the brake pedal must be applied.
If the vehicle is in P (Park), the ignition will
turn off, and Retained Accessory Power
(RAP) will remain active. SeeRetained
Accessory Power (RAP) 0199
If the vehicle is not in P (Park), the ignition
will return to ACC/ACCESSORY and display
the message SHIFT TO PARK in the Driver
Information Center (DIC).
When the vehicle is shifted into P (Park), the
ignition system will turn off.
The vehicle may have an electric steering
column lock. The lock is activated when the
vehicle is turned off and either front door is
opened. A sound may be heard as the lock
actuates or releases. The steering column
lock may not release with the wheels turned
off center. If this happens, the vehicle may
not start. Move the steering wheel from left
to right while attempting to start the
vehicle. If this does not work, the vehicle
needs service. Do not turn the engine off when the vehicle
is moving. This will cause a loss of power
assist in the brake and steering systems and
disable the airbags.
If the vehicle must be turned off in an
emergency:
1. Brake using a firm and steady pressure. Do not pump the brakes repeatedly. This
may deplete power assist, requiring
increased brake pedal force.
2. Shift the vehicle to N (Neutral). This can be done while the vehicle is moving.
After shifting to N (Neutral), firmly apply
the brakes and steer the vehicle to a
safe location.
3. Come to a complete stop. Shift to P (Park) and turn the ignition off.
4. Set the electric parking brake. See Electric
Parking Brake 0205
{Warning
Turning off the vehicle while moving may
cause loss of power assist in the brake
and steering systems and disable the
airbags. While driving, only shut the
vehicle off in an emergency. If the vehicle cannot be pulled over and
must be turned off while driving, press and
hold ENGINE START/ STOP for longer than
two seconds, or press twice in five seconds.
ACC/ACCESSORY (Amber Indicator Light)
This mode allows you to use some electrical
accessories when the engine is off.
With the ignition off, pressing the button
one time without the brake pedal applied
will place the ignition system in ACC/
ACCESSORY.
The ignition will switch from ACC/
ACCESSORY to OFF after five minutes to
prevent battery rundown.
ON/RUN/START (Green Indicator Light)
This mode is for driving and starting. With
the ignition off and the brake pedal applied,
pressing the button once will place the
ignition system in ON/RUN/START. Once
engine cranking begins, release the button.
Engine cranking will continue until the
engine starts. See
Starting the Engine 0194.
The ignition will then remain in ON/RUN.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Driving and Operating 215
Selecting the Follow Distance Gap
When a slower moving vehicle is detected
ahead within the selected following gap,
ACC will adjust the vehicle's speed and
attempt to maintain the follow distance gap
selected.
Press
[on the steering wheel to adjust
the following gap. Each press cycles the gap
button through three settings: Far, Medium,
or Near.
When pressed, the current gap setting
displays briefly on the instrument cluster.
The gap setting will be maintained until it is
changed.
Since each gap setting corresponds to a
following time (Far, Medium, or Near), the
following distance will vary based on vehicle
speed. The faster the vehicle speed, the
further back your vehicle will follow a
vehicle detected ahead. Consider traffic and
weather conditions when selecting the
following gap. The range of selectable gaps
may not be appropriate for all drivers and
driving conditions. Changing the gap setting automatically
changes the alert timing sensitivity (Far,
Medium, or Near) for the Forward Collision
Alert (FCA) feature. See
Forward Collision
Alert (FCA) System 0223.
Alerting the Driver
If ACC is engaged, driver action may be
required when ACC cannot apply sufficient
braking because of approaching a vehicle
too rapidly.
When this condition occurs, six red lights
will flash on the windshield and eight beeps
will sound from the front. See “Collision/
Detection Systems” underVehicle
Personalization 0110.
See Defensive Driving 0182.
Approaching and Following a Vehicle
The vehicle ahead indicator is in the
instrument cluster. It only displays when a
vehicle is detected in your vehicle’s path
moving in the same direction. If this symbol
is not displaying, ACC will not respond to or
brake for vehicles ahead.
ACC automatically slows the vehicle down
and adjusts vehicle speed to follow a
detected vehicle ahead at the selected
following gap. The vehicle speed increases or
decreases to follow a detected vehicle in
front of your vehicle when that vehicle is
traveling slower than your vehicle set speed.
It may apply limited braking, if necessary.
When braking is active, the brake lamps will
come on. The automatic braking may feel or
sound different than if the brakes were
applied manually. This is normal.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Driving and Operating 223
Forward Collision Alert (FCA)
System
If equipped, the FCA system may help to
avoid or reduce the harm caused by
front-end crashes. When approaching a
vehicle ahead too quickly, FCA provides a
red flashing alert on the windshield and
rapidly beeps. FCA also lights an amber
visual alert if following another vehicle
much too closely.
FCA detects vehicles within a distance of
approximately 60 m (197 ft) and operates at
speeds above 8 km/h (5 mph).
{Warning
FCA is a warning system and does not
apply the brakes. When approaching a
slower-moving or stopped vehicle ahead
too rapidly, or when following a vehicle
too closely, FCA may not provide a
warning with enough time to help avoid
a crash. It also may not provide any
warning at all. FCA does not warn of
pedestrians, animals, signs, guardrails,
bridges, construction barrels, or other
(Continued)
Warning (Continued)
objects. Be ready to take action and
apply the brakes. SeeDefensive Driving
0 182.
FCA can be disabled through vehicle
personalization. See “Collision/Detection
Systems” underVehicle Personalization
0 110.
Detecting the Vehicle Ahead
FCA warnings will not occur unless the FCA
system detects a vehicle ahead. When a
vehicle is detected, the vehicle ahead
indicator will display green. Vehicles may
not be detected on curves, highway exit
ramps, or hills, due to poor visibility; or if a
vehicle ahead is partially blocked by
pedestrians or other objects. FCA will not
detect another vehicle ahead until it is
completely in the driving lane.
{Warning
FCA does not provide a warning to help
avoid a crash, unless it detects a vehicle.
FCA may not detect a vehicle ahead if
the FCA sensor is blocked by dirt, snow,
or ice, or if the windshield is damaged.
It may also not detect a vehicle on
winding or hilly roads, or in conditions
that can limit visibility such as fog, rain,
or snow, or if the headlamps or
windshield are not cleaned or in proper
condition. Keep the windshield,
headlamps, and FCA sensors clean and in
good repair.
Collision Alert
When your vehicle approaches another
detected vehicle too rapidly, the red FCA
display will flash on the windshield.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
228 Driving and Operating
Lane Change Alert (LCA)
If equipped, the LCA system is a
lane-changing aid that assists drivers with
avoiding lane change crashes that occur with
moving vehicles in the side blind zone (or
spot) areas or with vehicles rapidly
approaching these areas from behind. The
LCA warning display will light up in the
corresponding outside mirror and will flash
if the turn signal is on.
{Warning
LCA does not alert the driver to vehicles
outside of the system detection zones,
pedestrians, bicyclists, or animals. It may
not provide alerts when changing lanes
under all driving conditions. Failure to use
proper care when changing lanes may
result in injury, death, or vehicle damage.
Before making a lane change, always
check mirrors, glance over your shoulder,
and use the turn signals.LCA Detection Zones
1. SBZA Detection Zone
2. LCA Detection Zone
The LCA sensor covers a zone of
approximately one lane over from both
sides of the vehicle, or 3.5 m (11 ft). The
height of the zone is approximately between
0.5 m (1.5 ft) and 2 m (6 ft) off the ground.
The Side Blind Zone Alert (SBZA) warning
area starts at approximately the middle of
the vehicle and goes back 5 m (16 ft). Drivers
are also warned of vehicles rapidly
approaching from up to 70 m (230 ft) behind
the vehicle.
How the System Works
The LCA symbol lights up in the outside
mirrors when the system detects a moving
vehicle in the next lane over that is in the side blind zone or rapidly approaching that
zone from behind. A lit LCA symbol indicates
it may be unsafe to change lanes. Before
making a lane change, check the LCA
display, check mirrors, glance over your
shoulder, and use the turn signals.
Left Outside Mirror
DisplayRight Outside Mirror Display
When the vehicle is started, both outside
mirror LCA displays will briefly come on to
indicate the system is operating. When the
vehicle is in a forward gear, the left or right
outside mirror display will light up if a
moving vehicle is detected in the next lane
over in that blind zone or rapidly
approaching that zone. If the turn signal is
activated in the same direction as a
detected vehicle, this display will flash as an
extra warning not to change lanes.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Vehicle Care 303
The jump start negative terminal (3) and
positive terminal (4) are on the battery of
the vehicle providing the jump start.
The positive jump start connection for the
discharged battery is under a trim cover.
Open the cover to expose the terminal.1. Check the other vehicle. It must have a 12-volt battery with a negative ground
system.
Caution
If the other vehicle does not have a
12-volt system with a negative ground,
both vehicles can be damaged. Only use
a vehicle that has a 12-volt system with a
negative ground for jump starting.
2. Position the two vehicles so that they are not touching.
3. Set the parking brake firmly and put the shift lever in P (Park) with an automatic
transmission, or Neutral with a manual
transmission.
Caution
If any accessories are left on or plugged
in during the jump starting procedure,
they could be damaged. The repairs
would not be covered by the vehicle
warranty. Whenever possible, turn off or
unplug all accessories on either vehicle
when jump starting.
4. Turn the ignition off. Turn off all lights and accessories in both vehicles, except
the hazard warning flashers if needed.
{Warning
An electric fan can start up even when
the engine is not running and can injure
you. Keep hands, clothing, and tools
away from any underhood electric fan.
{Warning
Using a match near a battery can cause
battery gas to explode. People have been
hurt doing this, and some have been
blinded. Use a flashlight if you need
more light.
(Continued)
Warning (Continued)
Battery fluid contains acid that can burn
you. Do not get it on you. If you
accidentally get it in your eyes or on
your skin, flush the place with water and
get medical help immediately.
{Warning
Fans or other moving engine parts can
injure you badly. Keep your hands away
from moving parts once the engine is
running.
5. Connect one end of the red positive (+) cable to the positive (+) terminal on the
discharged battery.
6. Connect the other end of the red positive (+) cable to the positive (+)
terminal of the good battery.
7. Connect one end of the black negative (–) cable to the negative (–)
terminal of the good battery.
8. Connect the other end of the black negative (–) cable to the negative (–)
grounding point for the discharged
battery.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Service and Maintenance 323
.Trained dealer technicians have the
diagnostic equipment to test the battery
and ensure that the connections and
cables are corrosion-free.
Belts
.Belts may need replacing if they squeak
or show signs of cracking or splitting.
.Trained dealer technicians have access to
tools and equipment to inspect the belts
and recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are crucial to
safe driving.
.Signs of brake wear may include chirping,
grinding, or squealing noises, or difficulty
stopping.
.Trained dealer technicians have access to
tools and equipment to inspect the brakes
and recommend quality parts engineered
for the vehicle.
Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See Recommended Fluids and
Lubricants 0325 for GM approved fluids.
.Engine oil and windshield washer fluid
levels should be checked at every fuel fill.
.Instrument cluster lights may come on to
indicate that fluids may be low and need
to be filled.
Hoses
Hoses transport fluids and should be
regularly inspected to ensure that there are
no cracks or leaks. With a multi-point
inspection, your dealer can inspect the hoses
and advise if replacement is needed.
Lamps
Properly working headlamps, taillamps, and
brake lamps are important to see and be
seen on the road.
.Signs that the headlamps need attention
include dimming, failure to light, cracking,
or damage. The brake lamps need to be
checked periodically to ensure that they
light when braking.
.With a multi-point inspection, your dealer
can check the lamps and note any
concerns.
Shocks and Struts
Shocks and struts help aid in control for a
smoother ride.
.Signs of wear may include steering wheel
vibration, bounce/sway while braking,
longer stopping distance, or uneven
tire wear.
.As part of the multi-point inspection,
trained dealer technicians can visually
inspect the shocks and struts for signs of
leaking, blown seals, or damage, and can
advise when service is needed.
Tires
Tires need to be properly inflated, rotated,
and balanced. Maintaining the tires can save
money and fuel, and can reduce the risk of
tire failure.
.Signs that the tires need to be replaced
include three or more visible treadwear
indicators; cord or fabric showing through
the rubber; cracks or cuts in the tread or
sidewall; or a bulge or split in the tire.
.Trained dealer technicians can inspect and
recommend the right tires. Your dealer
can also provide tire/wheel balancing
services to ensure smooth vehicle
operation at all speeds. Your dealer sells
and services name brand tires.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Index 355
Fuel (cont'd)Economy, Driving for Better . . . . . . . . . . . . 181
Filling a Portable Fuel Container . . . . . . . .233
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . .232
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . .232
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Low Fuel Warning Light . . . . . . . . . . . . . . . .102
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . 231
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Fuses Engine Compartment Fuse Block . . . . . . . .274
Fuses and Circuit Breakers . . . . . . . . . . . . . .274
Instrument Panel Fuse Block . . . . . . . . . . . . 277
Rear Compartment Fuse Block . . . . . . . . . .278
G
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Gauges
Engine Coolant Temperature . . . . . . . . . . . . 94
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Warning Lights and Indicators . . . . . . . . . . 88
General Information Service and Maintenance . . . . . . . . . . . . . . . 315 General Information (cont'd)
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Global Positioning System (GPS) . . . . . . . . . .145
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Guidance Problems with the Route . . . . . . . . . . . . . . . 145
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Hazard Warning Flashers . . . . . . . . . . . . . . . . . 117
HD Radio Technology . . . . . . . . . . . . . . . . . . . . .128
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 266
Daytime Running Lamps (DRL) . . . . . . . . . . 116
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Headlamps, Front Turn Signal,
Sidemarker, and Parking
Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 267, 268
High-Beam On Light . . . . . . . . . . . . . . . . . . . .103
High/Low Beam Changer . . . . . . . . . . . . . . . 115
Lamps On Reminder . . . . . . . . . . . . . . . . . . . .103
Heated Front Seats . . . . . . . . . . . . . . . . . . . . . . . 40 Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174, 176
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . 103
Hill and Mountain Roads . . . . . . . . . . . . . . . . .185
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . 206
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
How to Wear Seat Belts Properly . . . . . . . . . 45
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174, 176
I
If the System Needs Service . . . . . . . . . . . . . 146
Ignition Positions . . . . . . . . . . . . . . . . . . . . 191, 192
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Indicator Pedestrian Ahead . . . . . . . . . . . . . . . . . . . . . . 100
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . 100
Infants and Young Children, Restraints . . . . 62
Information Publication Ordering . . . . . . . . . . . . . . . . . . . 339
Infotainment System . . . . . . . . . . . . . . . . . . . . 342
Instrument Cluster . . . . . . . . . . . . . . . . . . . . . . . . 89
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Instrument Panel Overview . . . . . . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . . . . . . . . 31