
Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-7
Safety Belts
.............................................. 1-9
Child Restraints
.......................................1-32
Air Bag System
.......................................1-52
Restraint System Check
............................1-58
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-7
Windows
.................................................2-11
Theft-Deterrent Systems
............................2-17
Starting and Operating Your Vehicle
...........2-19
Mirrors
....................................................2-41
HomeLink
žTransmitter
.............................2-44
Storage Areas
.........................................2-48
Vehicle Personalization
.............................2-61
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-2
Climate Controls
......................................3-17
Warning Lights, Gages and Indicators
.........3-21
Audio System(s)
.......................................3-37Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-45
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
................. 5-8
Rear Axle
...............................................5-45
Four-Wheel Drive
.....................................5-45
Front Axle
...............................................5-46
Bulb Replacement
....................................5-47
Windshield Wiper Blade Replacement
.........5-52
Tires
......................................................5-54
Appearance Care
.....................................5-76
Vehicle Identi®cation
.................................5-83
Electrical System
......................................5-84
Capacities and Speci®cations
.....................5-91
Normal Maintenance Replacement Parts
......5-92
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
...........................7-10
INDEX................................................................1
2003 Chevrolet Blazer Owner ManualM

Keys...............................................................2-3
Remote Keyless Entry System.........................2-4
Remote Keyless Entry System Operation...........2-5
Doors and Locks.............................................2-7
Door Locks....................................................2-7
Power Door Locks..........................................2-8
Programmable Automatic Door Locks................2-8
Rear Door Security Locks..............................2-10
Lockout Protection........................................2-10
Leaving Your Vehicle....................................2-10
Windows........................................................2-11
Power Windows............................................2-12
Swing-Out Windows......................................2-13
Rear Window...............................................2-13
Sun Visors...................................................2-16
Theft-Deterrent Systems..................................2-17
Content Theft-Deterrent.................................2-17
Passlock
ž....................................................2-18
Starting and Operating Your Vehicle................2-19
New Vehicle Break-In....................................2-19
Ignition Positions..........................................2-19Starting Your Engine.....................................2-21
Engine Coolant Heater..................................2-22
Automatic Transmission Operation...................2-23
Manual Transmission Operation......................2-27
Four-Wheel Drive..........................................2-28
Parking Brake..............................................2-34
Shifting Into Park (P).....................................2-35
Shifting Out of Park (P).................................2-37
Parking Your Vehicle.....................................2-38
Parking Over Things That Burn.......................2-38
Engine Exhaust............................................2-39
Running Your Engine While You Are Parked. . . .2-39
Mirrors...........................................................2-41
Manual Rearview Mirror.................................2-41
Automatic Dimming Rearview Mirror................2-41
Outside Manual Mirror...................................2-42
Outside Power Mirrors...................................2-42
Outside Automatic Dimming Mirror..................2-43
Outside Convex Mirror...................................2-43
Outside Heated Mirrors..................................2-43
Section 2 Features and Controls
2-1

Mirrors
Manual Rearview Mirror
Pull the tab under the mirror toward you to reduce the
glare from headlamps behind you after dark. Push
the tab away from you for normal daytime operation.
Automatic Dimming Rearview Mirror
If your vehicle has this feature, the mirror automatically
changes to reduce glare from headlamps behind
you. A photocell on the back of the mirror senses when
it is becoming dark outside. Another photocell built
into the mirror surface senses when headlamps
are behind you.At night, when the glare is too high, the mirror will
gradually darken to reduce glare. This change may take
a few seconds. The mirror will return to its clear
daytime state when the vehicle is put into REVERSE (R)
or when the glare is reduced.
AUTO (Automatic Dimming):This button is located at
the base of the mirror. Use it to turn on the automatic
feature. The button has an indicator light to show it is on.
OFF:Press this button to turn the automatic feature off.Time Delay
The automatic mirror has a time delay feature which
prevents unnecessary switching from the night back to
the day position. This delay prevents rapid changing
of the mirror as you drive under lights and through traffic.
2-41

Cleaning the Photocells
Use a cotton swab and glass cleaner to clean the
photocells and mirror face when necessary.
Cleaning the Mirror
When cleaning the mirror, use a paper towel or similar
material dampened with glass cleaner. Do not spray
glass cleaner directly on the mirror as that may cause
the liquid cleaner to enter the mirror housing.
Outside Manual Mirror
Adjust your outside mirrors so you can see a little of the
side of your vehicle and the area beside and behind
your vehicle from a comfortable driving position.
You can also fold the mirrors in before entering a car
wash. Pull the mirrors in toward the vehicle. Push
the mirrors back out when ®nished.
Outside Power Mirrors
If your vehicle has this
feature, the controls are
located on the driver's door
armrest.
Move the selector switch to the left or right to choose
the driver's or passenger's mirror, then use the
arrows located on the four-way control pad to move the
mirror in the direction you want the mirror to go.
Put the selector switch back in the center position when
®nished adjusting the mirror so that you don't
accidentally bump into the control pad and get the
mirror out of adjustment.
2-42

Outside Automatic Dimming Mirror
If your vehicle has this feature, the driver's side
outside mirror will adjust for the glare of headlamps
behind you. See
Automatic Dimming Rearview Mirror on
page 2-41.
Outside Convex Mirror
A convex mirror's surface is curved so you can see
more from the driver's seat.
{CAUTION:
A convex mirror can make things (like other
vehicles) look farther away than they really are.
If you cut too sharply into the right lane, you
could hit a vehicle on your right. Check your
inside mirror or glance over your shoulder
before changing lanes.
Outside Heated Mirrors
Your vehicle may be equipped with outside heated
mirrors.
When you operate the rear window defogger, a defogger
also warms the heated outside rearview mirrors to
help clear them of ice, snow and condensation. See
ªRear Window Defoggerº under
Climate Control System
on page 3-17for more information.
2-43

Press the button to turn the fog lamps on. Press the
button again to turn them off. A light will glow in
the button when the fog lamps are on.
Fog lamps will go off whenever your high-beam
headlamps come on. When the high-beams go off, the
fog lamps will come on again.
Interior Lamps
Instrumental Panel Brightness
The thumbwheel for this feature is located on the
driver's side of the instrument panel next to the exterior
lamps control.
Turn the thumbwheel up to make your instrument panel
lights brighter. Turn the thumbwheel all the way up to
turn on the interior lamps. To dim the instrument
panel lights, turn the thumbwheel down.
Entry Lighting
Your vehicle is equipped with an illuminated entry feature.
When a door is opened, the dome lamps will come
on if the DOME OVERRIDE button is in the out position.
When the doors are closed, the lamps will stay on for
a short period of time and will turn off automatically.
If you use your keyless entry transmitter, if equipped, to
unlock your vehicle, the interior lamps will come on
for a short time whether or not the DOME OVERRIDE
button is in the out position.
Exit Lighting
With exit lighting, the interior lamps will come on when
you remove the key from the ignition to help you
see while exiting the vehicle. If the DOME OVERRIDE
button is in the out position, these lamps will stay
on for a short period of time and then will go out.
Front Reading Lamps
Press the button located near each lamp on the
overhead console to turn a reading lamp on and off.
The lamps can be swiveled to point in the desired
direction.
If you have the mini console, press the lens on each
lamp to turn it on or off.
Front Map Lamps
If your vehicle has front map lamps, they are located on
the inside rearview mirror. They will automatically
come on for about 40 seconds when the doors are
unlocked with the keyless entry transmitter, if equipped,
or until the ignition key is turned to RUN or
ACCESSORY. The lamps will also stay on for about
40 seconds after you exit the vehicle unless you lock the
doors with the keyless entry transmitter.
You can also turn the lamps on and off by pressing the
button near each lamp.
3-14

Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass. This
can be minimized if the climate control system is
used properly. There are two modes to clear fog or frost
from your windshield and side windows. Use the
defog mode to clear the windows of fog or moisture and
warm the passengers. use the defrost mode to
remove fog or frost from the windshield more quickly.
For best results, clear all snow and ice from the
windshield before defrosting.
-(Defog):Use this mode to direct half the air to the
windshield and half to the ¯oor outlet. Close the
center outlets to help defrost the side windows more
quickly. In this mode, the system will automatically force
outside air into your vehicle and it will also run the
air-conditioning compressor, unless it falls below the
temperature at which air conditioning is effective.
1(Defrost):This mode directs most of the air to the
windshield and the side window vents, with only a
little air directed to the ¯oor vents. When you select this
mode, the system runs the air-conditioning compressor
unless the outside temperature is at or below freezing.
Do not drive the vehicle until all the windows are clear.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
will come on to let your know that the rear window
defogger is activated.
If your vehicle has heated outside rearview mirrors,
when the rear defogger button is pressed the mirrors will
warm to help clear any fog or frost from the surface of
the mirrors.
Notice:Don't use a razor blade or something else
sharp on the inside of the rear window. If you
do, you could cut or damage the defogger and the
repairs would not be covered by your warranty.
Do not attach a temporary vehicle license, tape, a
decal or anything similar to the defogger grid.
3-19

·If other vehicles are lined up to pass a slow vehicle,
wait your turn. But take care that someone isn't
trying to pass you as you pull out to pass the slow
vehicle. Remember to glance over your shoulder
and check the blind spot.
·Check your mirrors, glance over your shoulder, and
start your left lane change signal before moving out
of the right lane to pass. When you are far
enough ahead of the passed vehicle to see its front
in your inside mirror, activate your right lane
change signal and move back into the right lane.
(Remember that your right outside mirror is convex.
The vehicle you just passed may seem to be
farther away from you than it really is.)
·Try not to pass more than one vehicle at a time on
two-lane roads. Reconsider before passing the
next vehicle.
·Don't overtake a slowly moving vehicle too rapidly.
Even though the brake lamps are not ¯ashing, it
may be slowing down or starting to turn.
·If you're being passed, make it easy for the
following driver to get ahead of you. Perhaps you
can ease a little to the right.
Loss of Control
Let's review what driving experts say about what
happens when the three control systems (brakes,
steering and acceleration) don't have enough friction
where the tires meet the road to do what the driver
has asked.
In any emergency, don't give up. Keep trying to steer
and constantly seek an escape route or area of
less danger.
Skidding
In a skid, a driver can lose control of the vehicle.
Defensive drivers avoid most skids by taking reasonable
care suited to existing conditions, and by not
ªoverdrivingº those conditions. But skids are always
possible.
The three types of skids correspond to your vehicle's
three control systems. In the braking skid, your wheels
aren't rolling. In the steering or cornering skid, too
much speed or steering in a curve causes tires to slip
and lose cornering force. And in the acceleration
skid, too much throttle causes the driving wheels
to spin.
A cornering skid is best handled by easing your foot off
the accelerator pedal.
4-14