2003 CHEVROLET TRAIL BLAZER climate control

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-6
Safety Belts
.............................................. 1-8
Child Restraints
.......................................1-28
Air Bag Systems
......................................1-49
Restraint System Check
............................1-59
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
.................................................2-14
Theft-Deterrent Systems
............................2-16
Starting and Operating Your Vehicle
...........2-18
Mirrors
....................................................2-34
OnStar
žSystem
......................................2-38
HomeLinkžTransmitter
.............................2-39
Storage Areas
.........................................2-43
Sunroof
..................................................2-50
Vehicle Personalization
.............................2-50
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-21
Warning Lights, Gages and Indicators
.........3-35
Driver Information Center (DIC)
..................3-51Audio System(s)
.......................................3-64
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-44
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
...............5-10
Rear Axle
...............................................5-47
Four-Wheel Drive
.....................................5-48
Bulb Replacement
....................................5-50
Windshield Wiper Blade Replacement
.........5-51
Tires
......................................................5-54
Appearance Care
.....................................5-79
Vehicle Identi®cation
.................................5-87
Electrical System
......................................5-88
Capacities and Speci®cations
...................5-100
Normal Maintenance Replacement Parts
....5-102
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
............................ 7-8
Index................................................................ 1
2003 Chevrolet TrailBlazerM

Vehicle Damage Warnings
Also, in this book you will ®nd these notices:
Notice:These mean there is something that could
damage your vehicle.
A notice will tell you about something that can damage
your vehicle. Many times, this damage would not be
covered by your warranty, and it could be costly. But the
notice will tell you what to do to help avoid the
damage.
When you read other manuals, you might see
CAUTION and NOTICE warnings in different colors
or in different words.
You'll also see warning labels on your vehicle. They use
the same words, CAUTION or NOTICE.
Vehicle Symbols
Your vehicle has components and labels that use
symbols instead of text. Symbols, used on your vehicle,
are shown along with the text describing the operation
or information relating to a speci®c component, control,
message, gage or indicator.
If you need help ®guring out a speci®c name of a
component, gage or indicator, reference the following
topics:
·Seats and Restraint Systems in Section 1
·Features and Controls in Section 2
·Instrument Panel Overview in Section 3
·Climate Controls in Section 3
·Warning Lights, Gages and Indicators in Section 3
·Audio System(s) in Section 3
·Engine Compartment Overview in Section 5
iv

Liftgate/Liftglass
{CAUTION:
It can be dangerous to drive with the liftgate or
liftglass open because carbon monoxide (CO)
gas can come into your vehicle. You can't see
or smell CO. It can cause unconsciousness
and even death. If you must drive with the
liftgate open or if electrical wiring or other
cable connections must pass through the seal
between the body and the liftgate or liftglass:
·Make sure all other windows are shut.
·Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. See ªClimate Control
Systemº in the Index.
·If you have air outlets on or under the
instrument panel, open them all the way.
See ªEngine Exhaustº in the Index.
Liftgate Release
To unlock the liftgate, you may use the power door
locks or the keyless entry system described earlier.
On some vehicles the liftglass will also unlock when
the liftgate is unlocked. Press the pushbutton on
the liftglass to open it.
To open the entire liftgate, lift the handle located in
the center of the liftgate. If you open the liftgate,
the liftgate module will lock the liftglass after a one to
two second delay.
Emergency Release for Opening
Liftgate
1. Remove the trim plug to expose the access hole in
the trim panel. The access hole is located on the
inside of the liftgate.
2. Use a tool to reach through the access hole in the
trim panel.
3. Pry the left release lever up to the unlock position.
Pry the right release lever up to unlatch the liftgate.
4. Reattach the trim plug.
2-13

Engine Exhaust
{CAUTION:
Engine exhaust can kill. It contains the gas
carbon monoxide (CO), which you can not
see or smell. It can cause unconsciousness
and death.
You might have exhaust coming in if:
·Your exhaust system sounds strange
or different.
·Your vehicle gets rusty underneath.
·Your vehicle was damaged in a collision.
·Your vehicle was damaged when driving
over high points on the road or over
road debris.
·Repairs were not done correctly.
·Your vehicle or exhaust system had been
modi®ed improperly.
If you ever suspect exhaust is coming into
your vehicle:
·Drive it only with all the windows down to
blow out any CO; and
·Have your vehicle ®xed immediately.
Running Your Engine While You
Are Parked
It is better not to park with the engine running. But if
you ever have to, here are some things to know.
{CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust into
your vehicle. See the earlier Caution under
Engine Exhaust on page 2-32.
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the climate control fan is at the highest setting.
One place this can happen is a garage.
Exhaust Ð with CO Ð can come in easily.
NEVER park in a garage with the engine
running.
Another closed-in place can be a blizzard.
See
Winter Driving on page 4-38.
2-32

Travel Note Recorder
Your vehicle may have this feature.
O(Record):To record a message, press this button
and begin speaking. Press the button again to stop
recording. You may also press and hold this button while
you are speaking and then let it go when you are
®nished.
w(Play):To play a recorded message, press this
button. Pressing the button more than once will return
you to previously recorded messages. If you press
and hold this button for more than one second, all of the
recorded messages will be played back.
c(Stop):To delete messages, press this button
while the message is playing. If you press and hold the
play and record buttons at the same time for a half
of a second, all of the messages will be deleted.
Front Storage Area
If your vehicle has this console compartment, squeeze
the front lever while lifting the top to open it. You
can store cassettes and compact discs in the slots in
front of the compartment.
Your vehicle's console will be equipped with cupholders
located on the front and rear of the storage
compartment.
The console may also contain one or more of the
following components:
·Rear Seat Audio Controls
·Rear Seat Accessory Power Outlets
·Rear Climate Control
If your vehicle has the center armrest compartment, lift
the cover to expose the storage area which includes
slots for cassettes or compact discs.
2-44

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-7
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-7
Exterior Lamps.............................................3-15
Interior Lamps..............................................3-18
Accessory Power Outlets...............................3-20
Ashtrays and Cigarette Lighter........................3-20
Climate Controls............................................3-21
Dual Climate Control System..........................3-21
Dual Automatic Climate Control System...........3-24
Rear Climate Control System.........................3-30
Steering Wheel Climate Controls.....................3-34
Climate Controls Personalization.....................3-34Warning Lights, Gages and Indicators.............3-35
Instrument Panel Cluster................................3-36
Speedometer and Odometer...........................3-37
Tachometer.................................................3-38
Safety Belt Reminder Light.............................3-38
Air Bag Readiness Light................................3-38
Charging System Light..................................3-39
Voltmeter Gage............................................3-40
Brake System Warning Light..........................3-41
Anti-Lock Brake System Warning Light.............3-42
Engine Coolant Temperature Gage..................3-42
Malfunction Indicator Lamp.............................3-43
Oil Pressure Gage........................................3-46
Change Engine Oil Light................................3-47
Security Light...............................................3-47
Cruise Control Light......................................3-48
Reduced Engine Power Light.........................3-48
Service Four-Wheel Drive Warning Light..........3-49
Check Gages Warning Light...........................3-49
Gate Ajar Light.............................................3-50
Fuel Gage...................................................3-50
Low Fuel Warning Light.................................3-51
Section 3 Instrument Panel
3-1

The main components of your instrument panel are the following:
A. Exterior Lamp Controls. See
Exterior Lamps on
page 3-15.
B. Air Outlets. See ªOutlet Adjustmentº under
Dual
Climate Control System on page 3-21.
C. Turn Signal/Multifunction Lever. See
Turn
Signal/Multifunction Lever on page 3-7.
D. Instrument Panel Cluster. See
Instrument Panel
Cluster on page 3-36.
E. Ignition Switch. See
Ignition Positions on page 2-19.
F. Transfer Case Controls or Traction Control Button.
See ªAutomatic Transfer Caseº under
Four-Wheel
Drive on page 2-24.
G. Rear Window Washer/Wiper. See ªRear Window
Washer/Wiperº under
Turn Signal/Multifunction Lever
on page 3-7.
H. Audio System. See
Audio System(s) on page 3-64.I. Climate Controls. See
Dual Climate Control System
on page 3-21.
J. Hood Release. See
Hood Release on page 5-10.
K. Ashtray. See
Ashtrays and Cigarette Lighter on
page 3-20.
L. Shift Lever. See
Shifting Into Park (P) on page 2-29.
M. Lighter. See
Ashtrays and Cigarette Lighter on
page 3-20.
N. Accessory Power Outlet. See
Accessory Power
Outlets on page 3-20.
O. Rear Window Defogger. See ªRear Window
Defoggerº under
Dual Climate Control System on
page 3-21.
P. Glove Box. See
Glove Box on page 2-43.
3-5

Climate Controls
Dual Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
9(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
If the knob is in off mode, outside air will still enter the
vehicle, and will be directed based on the position of the
mode knob. The temperature can still be adjusted
using the temperature knob.
Turn the right knob clockwise or counterclockwise to
direct the air¯ow inside of your vehicle.To change the current mode, select one of the following:
H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode directs about half of the air
to the instrument panel outlets; then directs most of
the remaining air to the ¯oor outlets. A little air is
directed toward the windshield and the side window
outlets. Cooler air is directed to the upper vents
and warmer air to the ¯oor outlets.
6(Floor):This mode directs most of the air to the
¯oor outlets with a little air directed to the windshield and
the side window outlets. The recirculation button
cannot be selected while in ¯oor mode.
h(Recirculation):Recirculation mode is used to
recirculate the air inside of your vehicle. When this
button is pressed, an indicator light in the button
will come on to let you know that it is active. Use this
mode to help prevent outside odors and/or dust
from entering your vehicle or to help cool the air inside
of your vehicle more quickly. The air conditioning
compressor will also come on when this mode is
activated. While in recirculation mode, the windows may
fog when the weather is cold and damp. To clear the
fog, select either the defog or defrost mode and increase
fan speed. Recirculation mode shuts off when the
engine is turned off.
3-21