2022 CHEVROLET TRAILBLAZER ECU

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
344 OnStar
.Receive Roadside Assistance.
.Manage Wi-Fi Settings, if equipped.
Press
>to get a priority connection to an
OnStar Advisor available 24/7 to:
.Get help for an emergency.
.Be a Good Samaritan or respond to an
AMBER Alert.
.Get assistance in severe weather or other
crisis situations and find evacuation
routes.
OnStar Services
Emergency
Emergency Services require an active safety
and security plan. With Automatic Crash
Response, built-in sensors can automatically
alert a specially trained OnStar Advisor who
is immediately connected in to the vehicle
to help.
Press
>for a priority connection to an
OnStar Advisor who can contact emergency
service providers, direct them to your exact
location, and relay important information. With OnStar Crisis Assist, specially trained
Advisors are available 24 hours a day, 7 days
a week, to provide a central point of
contact, assistance, and information during a
crisis.
With Roadside Assistance, Advisors can
locate a nearby service provider to help with
a flat tire, a battery jump, or an empty
gas tank.
Security
If equipped, OnStar provides these services:
.With Stolen Vehicle Assistance, OnStar
Advisors can use GPS to pinpoint the
vehicle and help authorities quickly
recover it.
.With Remote Ignition Block, if equipped,
OnStar can block the engine from being
restarted.
.With Stolen Vehicle Slowdown,
if equipped, OnStar can work with law
enforcement to gradually slow the
vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked and the
vehicle alarm sounds, a notification by text,
e-mail, or phone call will be sent. If the
vehicle is stolen, an OnStar Advisor can work
with authorities to recover the vehicle.
OnStar Additional
Information
In-Vehicle Audio Messages
Audio messages may play important
information at the following times:
.Prior to vehicle purchase. PressQto set
up an account.
.After change in ownership and at
90 days.
Transferring Service
PressQto request account transfer
eligibility information. The Advisor can
cancel or change account information.
Selling/Transferring the Vehicle
Call 1-888-4ONSTAR (1-888-466-7827)
immediately to terminate your OnStar or
connected services if the vehicle is disposed
of, sold, transferred, or if the lease ends.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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346 OnStar
Languages
The vehicle can be programmed to respond
in multiple languages. Press
Qand ask for
an Advisor. Advisors are available in English,
Spanish, and French. Available languages
may vary by country.
Potential Issues
OnStar cannot perform Remote Door Unlock
or Stolen Vehicle Assistance after the vehicle
has been off continuously for 10 days
without an ignition cycle. If the vehicle has
not been started for 10 days, OnStar can
contact Roadside Assistance or a locksmith
to help gain access to the vehicle.
Global Positioning System (GPS)
.Obstruction of the GPS can occur in a
large city with tall buildings; in parking
garages; around airports; in tunnels and
underpasses; or in an area with very
dense trees. If GPS signals are not
available, the OnStar system should still
operate to call OnStar. However, OnStar
could have difficulty identifying the exact
location.
.In emergency situations, OnStar can use
the last stored GPS location to send to
emergency responders. A temporary loss of GPS can cause loss of
the ability to send a Turn-by-Turn
Navigation route. The Advisor may give a
verbal route or may ask for a call back after
the vehicle is driven into an open area.
Cellular and GPS Antennas
Cellular reception is required for OnStar to
send remote signals to the vehicle. Do not
place items over or near the antenna to
prevent blocking cellular and GPS signal
reception.
Unable to Connect to OnStar Message
If there is limited cellular coverage or the
cellular network has reached maximum
capacity, this message may come on. Press
Qto try the call again or try again after
driving a few miles into another
cellular area.
Vehicle and Power Issues
OnStar services require a vehicle electrical
system, wireless service, and GPS satellite
technologies to be available and operating
for features to function properly. These
systems may not operate if the battery is
discharged or disconnected.
Add-on Electrical Equipment
The OnStar system is integrated into the
electrical architecture of the vehicle. Do not
add any electrical equipment. See Add-On
Electrical Equipment 0241. Added electrical
equipment may interfere with the operation
of the OnStar system and cause it to not
operate.
Vehicle Software Updates
OnStar or GM may remotely deliver
software updates or changes to the vehicle
without further notice or consent. These
updates or changes may enhance or
maintain safety, security, or the operation
of the vehicle or the vehicle systems.
Software updates or changes may affect or
erase data or settings that are stored in the
vehicle, such as saved navigation
destinations, or pre-set radio stations.
Neither OnStar nor GM is responsible for
any affected or erased data or settings.
These updates or changes may also collect
personal information. Such collection is
described in the OnStar privacy statement or
separately disclosed at the time of
installation. These updates or changes may
also cause a system to automatically
communicate with GM servers to collect
information about vehicle system status,

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Connected Services 349
PressQ, then ask the Advisor to download
directions to the vehicle’s navigation system,
if equipped. After the call ends, the
navigation screen will provide prompts to
begin driving directions. Routes that are sent
to the navigation screen can only be
canceled through the navigation system.
See www.onstar.com (U.S.) or www.onstar.ca
(Canada).
Connections
The following services help with staying
connected.
For coverage maps, see www.onstar.com
(U.S.) or www.onstar.ca (Canada).
Ensuring Security
.Change the default passwords for the
Wi-Fi hotspot and myChevrolet mobile
application. Make these passwords
different from each other and use a
combination of letters and numbers to
increase the security.
.Change the default name of the SSID
(Service Set Identifier). This is your
network’s name that is visible to other
wireless devices. Choose a unique name
and avoid family names or vehicle
descriptions. Wi-Fi Hotspot (If Equipped)
The vehicle may have a built-in Wi-Fi
hotspot that provides access to the Internet
and web content at 4G LTE speed. Up to
seven mobile devices can be connected.
A data plan is required. Use the in-vehicle
controls only when it is safe to do so.
1. To retrieve Wi-Fi hotspot information, press
=to open the OnStar app on the
infotainment display, then select Wi-Fi
Hotspot. On some vehicles, touch Wi-Fi
or Wi-Fi Settings on the screen.
2. The Wi-Fi settings will display the Wi-Fi hotspot name (SSID), password, and on
some vehicles, the connection type (no
Internet connection, 3G, 4G, 4G LTE), and
signal quality (poor, good, excellent).
3. To change the SSID or password, press
Qor call 1-888-4ONSTAR to connect
with an Advisor. On some vehicles, the
SSID and password can be changed in
the Wi-Fi Hotspot menu.
After initial set-up, your vehicle’s Wi-Fi
hotspot will connect automatically to your
mobile devices. Manage data usage by
turning Wi-Fi on or off on your mobile
device, by using the myChevrolet mobile app, or by contacting an OnStar Advisor. On
some vehicles, Wi-Fi can also be managed
from the Wi-Fi Hotspot menu.
MyChevrolet Mobile App (If Available)
Download the myChevrolet mobile app to
compatible Apple and Android smartphones.
Chevrolet users can access the following
services from a smartphone:
.Remotely start/stop the vehicle,
if factory-equipped.
.Lock/unlock doors, if equipped with
automatic locks.
.Activate the horn and lamps.
.Check the vehicle’s fuel level, oil life,
or tire pressure, if factory-equipped with
the Tire Pressure Monitor System.
.Send destinations to the vehicle.
.Locate the vehicle on a map (U.S.
market only).
.Turn the vehicle's Wi-Fi hotspot on/off,
manage settings, and monitor data
consumption, if equipped.
.Locate a dealer and schedule service.
.Request roadside assistance.
.Set a parking reminder with pin drop,
take a photo, make a note, and set a
timer.

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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Index 351
IndexA
About Driving the Vehicle . . . . . . . . . . . . . . . . . .2
Accessories and Modifications . . . . . . . . . . . 245
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . 199
Adaptive Cruise Control . . . . . . . . . . . . . . . . . . . 211
Add-On Electrical Equipment . . . . . . . . . . . . . .241
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
Additional Maintenance and Care . . . . . . . . 322
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . . . . . .39
Agreements Trademarks and License . . . . . . . . . . . . . . . . 165
Air Cleaner/Filter, Engine . . . . . . . . . . . . . . . . 253
Air Conditioning . . . . . . . . . . . . . . . . . . . . . 174, 176
Air Filter
Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253
Air Filter, Passenger Compartment . . . . . . . 179
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
How Does an Airbag Restrain? . . . . . . . . . . .54
Passenger Sensing System . . . . . . . . . . . . . . .56
What Makes an Airbag Inflate? . . . . . . . . . .54
What Will You See after an AirbagInflates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
When Should an Airbag Inflate? . . . . . . . . . 53
Where Are the Airbags? . . . . . . . . . . . . . . . . . 52 Airbags
Adding Equipment to the Vehicle . . . . . . . 60
Passenger Status Indicator . . . . . . . . . . . . . . .95
Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . . .95
Servicing Airbag-Equipped Vehicles . . . . . . .59
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Alarm
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . .29
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Side Blind Zone (SBZA) . . . . . . . . . . . . . . . . . . 227
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 280
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . 203, 263 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Antilock Brake System (ABS) . . . . . . . . . . . . . 204 Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Apple CarPlay and Android Auto . . . . . . . . . 156
Armrest Rear Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Assistance Program, Roadside . . . . . . . . . . . . 335
Assistance Systems for Driving . . . . . . . . . . 222

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Index 353
Child Restraints (cont'd)Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73, 74
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Climate Control Systems . . . . . . . . . . . . . . . . . .174 Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . 174
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . 89
Collision Damage Repair . . . . . . . . . . . . . . . . . 337
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . . . 301
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 349
Control
Traction and Electronic Stability . . . . . . . 206
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . .183 Controls
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 123
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Coolant Engine Temperature Gauge . . . . . . . . . . . . . 94
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174, 176
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Courtesy Transportation Program . . . . . . . . 337
Coverage Explanations . . . . . . . . . . . . . . . . . . . 146
Covers Rear Compartment/Storage Panel . . . . . . . .79
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 209 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
Cruise Control, Adaptive . . . . . . . . . . . . . . . . . . 211
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Customer Assistance . . . . . . . . . . . . . . . . . . . . . 334
Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Text Telephone (TTY) Users . . . . . . . . . . . . 334
Customer Information
Publications Ordering Information . . . . . 339
Customer Satisfaction Procedure . . . . . . . . . 332
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .341
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . 337
Danger, Warning, and Caution . . . . . . . . . . . . . .2 Data Collection
Infotainment System . . . . . . . . . . . . . . . . . . 342
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Data Recorders, Event . . . . . . . . . . . . . . . . . . . 342
Database Coverage Explanations . . . . . . . . . 146
Daytime Running Lamps (DRL) . . . . . . . . . . . . 116
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . .182
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Diagnostics Connected Services . . . . . . . . . . . . . . . . . . . . 350
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . .182
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 21
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Drive Belt Routing, Engine . . . . . . . . . . . . . . . . 331
Drive Systems All-Wheel Drive . . . . . . . . . . . . . . . . . . . 203, 263
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Driver Assistance Systems . . . . . . . . . . . . . . . 219
Driver Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Driver Information Center (DIC) . . . . . .104, 107
Driver Mode Control . . . . . . . . . . . . . . . . . . . . . 208

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
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356 Index
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, 121
J
JackAuxiliary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Jump Starting - North America . . . . . . . . . . . 302
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . . . .9, 11
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6, 8
L
Labeling, Tire Sidewall . . . . . . . . . . . . . . . . . . . .281
Lamps Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Daytime Running (DRL) . . . . . . . . . . . . . . . . . 116
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Exterior Controls . . . . . . . . . . . . . . . . . . . . . . . . 114
Exterior Lighting Battery Saver . . . . . . . . .120
Malfunction Indicator (Check Engine) . . . 96
On Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . .103
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Lane Change Alert (LCA) . . . . . . . . . . . . . . . . . 228
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . . . . 229
Lane Keep Assist Light . . . . . . . . . . . . . . . . . . . 100
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . . . 46
LATCH System Replacing Parts after a Crash . . . . . . . . . . . . 72 LATCH, Lower Anchors and Tethers for
Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Illumination Control . . . . . . . . . . . . . . . . . . . . 118
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Lights Airbag Readiness . . . . . . . . . . . . . . . . . . . . . . . .95
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . . 99
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Brake System Warning . . . . . . . . . . . . . . . . . 98
Charging System . . . . . . . . . . . . . . . . . . . . . . . 96
Check Engine (Malfunction Indicator) . . . 96
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . .103
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Electric Parking Brake . . . . . . . . . . . . . . . . . . . 98
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . .102
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Front Fog Lamp . . . . . . . . . . . . . . . . . . . . . . . . .103
High-Beam On . . . . . . . . . . . . . . . . . . . . . . . . . .103
High/Low Beam Changer . . . . . . . . . . . . . . . 115
Lane Keep Assist . . . . . . . . . . . . . . . . . . . . . . . 100
Low Fuel Warning . . . . . . . . . . . . . . . . . . . . . .102
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . . 94 Lights (cont'd)
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Service Electric Parking Brake . . . . . . . . . . . 99
Sport Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . . . . . . . . . . . 101
Traction Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 21
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . . 21
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Low Fuel Warning Light . . . . . . . . . . . . . . . . . 102
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . . . . . . . . . 67
Lumbar Adjustment . . . . . . . . . . . . . . . . . . . . . . . 39
Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327

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Index 357
Maintenance and CareAdditional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .322
Maintenance Schedule . . . . . . . . . . . . . . . . . . . 316 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325
Malfunction Indicator Lamp . . . . . . . . . . . . . . . 96
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Map Data Updates . . . . . . . . . . . . . . . . . . . . . . . 146
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Media Avoiding Untrusted Devices . . . . . . . . . . . . .130
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Mirrors
Automatic Dimming Rearview . . . . . . . . . . . 32
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Manual Rearview . . . . . . . . . . . . . . . . . . . . . . . . 32
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Mirrors, Interior Rearview . . . . . . . . . . . . . . . . . . 31
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 Driver Control . . . . . . . . . . . . . . . . . . . . . . . . . 208
Monitor System, Tire Pressure . . . . . . . . . . . 286
Multi-band Antenna . . . . . . . . . . . . . . . . . . . . . 129N
Navigation Connected Services . . . . . . . . . . . . . . . . . . . . 348
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Using the System . . . . . . . . . . . . . . . . . . . . . . . 134
Navigation Symbols . . . . . . . . . . . . . . . . . . . . . .138
New Vehicle Break-In . . . . . . . . . . . . . . . . . . . . 190
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Engine Oil Life System . . . . . . . . . . . . . . . . . .252
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . .102
Older Children, Restraints . . . . . . . . . . . . . . . . . .61
Online Owner Center . . . . . . . . . . . . . . . . . . . . 334
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
OnStar Additional Information . . . . . . . . . . . 344
OnStar Emergency . . . . . . . . . . . . . . . . . . . . . . . 344
OnStar Overview . . . . . . . . . . . . . . . . . . . . . . . . . 343
OnStar Security . . . . . . . . . . . . . . . . . . . . . . . . . . 344
OnStar System . . . . . . . . . . . . . . . . . . . . . . 133, 144
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . 258
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . .4
P
ParkShifting Into . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Shifting Out of . . . . . . . . . . . . . . . . . . . . . . . . 200
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Parking Brake and P (Park) MechanismCheck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Over Things That Burn . . . . . . . . . . . . . . . . . 200
Parking or Backing
Assistance Systems . . . . . . . . . . . . . . . . . . . . . 221
Passenger Airbag Status Indicator . . . . . . . . . 95
Passenger Compartment Air Filter . . . . . . . 179
Passenger Sensing System . . . . . . . . . . . . . . . . 56
Pedestrian Ahead Indicator . . . . . . . . . . . . . . 100
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Phone Apple CarPlay and Android Auto . . . . . . . . 156

Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
Index 359
S
Safety Defects ReportingCanadian Government . . . . . . . . . . . . . . . . . 340
General Motors . . . . . . . . . . . . . . . . . . . . . . . . . 341
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 340
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Safety System Check . . . . . . . . . . . . . . . . . . . . . 50
Satellite Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Scheduling Appointments . . . . . . . . . . . . . . . . 336
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
How to Wear Seat Belts Properly . . . . . . . .45
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . 46
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Replacing after a Crash . . . . . . . . . . . . . . . . . 50
Use During Pregnancy . . . . . . . . . . . . . . . . . . 49
Seats Adjustment, Front . . . . . . . . . . . . . . . . . . . . . . .38
Folding Seatback . . . . . . . . . . . . . . . . . . . . . . . . . 41
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . .36
Heated Front . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Lumbar Adjustment, Front . . . . . . . . . . . . . . .39
Power Adjustment, Front . . . . . . . . . . . . . . . .38
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . .39
Securing Child Restraints . . . . . . . . . . . . . . . 73, 74 Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Accessories and Modifications . . . . . . . . . 245
Climate Control System . . . . . . . . . . . . . . . . . 174
Doing Your Own Work . . . . . . . . . . . . . . . . . 245
Maintenance Records . . . . . . . . . . . . . . . . . . . 327
Maintenance, General Information . . . . . . 315
Parts Identification . . . . . . . . . . . . . . . . . . . . . 328
Scheduling Appointments . . . . . . . . . . . . . . 336
Service Electric Parking Brake Light . . . . . . . 99
Services Special Application . . . . . . . . . . . . . . . . . . . . . .322
Servicing System . . . . . . . . . . . . . . . . . . . . . . . . 146
Servicing the Airbag . . . . . . . . . . . . . . . . . . . . . . 59
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Shift Lock Control Function Check, Automatic Transmission . . . . . . . . . . . . . . . . 263
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . 227
Sidemarker
Bulb Replacement . . . . . . . . . . . . . . . . . . 269, 271
Signals, Turn and Lane-Change . . . . . . . . . . . . 117 Software Updates . . . . . . . . . . . . . . . . . . . . . . . . 126
Spare Tire
Compact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .301
Special Application Services . . . . . . . . . . . . . . 322
Specifications and Capacities . . . . . . . . . . . . . 329
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Sport Mode Light . . . . . . . . . . . . . . . . . . . . . . . . 100
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Start Vehicle, Remote . . . . . . . . . . . . . . . . . . . . . . 17
Starter Switch Check . . . . . . . . . . . . . . . . . . . . . 263
Starting the Engine . . . . . . . . . . . . . . . . . . . . . . 194
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183 Wheel Adjustment . . . . . . . . . . . . . . . . . . . . . . .83
Wheel Controls . . . . . . . . . . . . . . . . . . . . . . . . . .83
Steering Wheel Controls . . . . . . . . . . . . . . . . . . 123
Stop/Start System . . . . . . . . . . . . . . . . . . . . . . . 195
Stoplamps and Back-Up Lamps Bulb Replacement . . . . . . . . . . . . . . . . . . 269, 271
Storage Areas
Cargo Management System . . . . . . . . . . . . 80
Center Console . . . . . . . . . . . . . . . . . . . . . . . . . .79
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . .78
Rear Compartment/Storage PanelCover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Roof Rack System . . . . . . . . . . . . . . . . . . . . . . . 80