2003 BUICK REGAL Climate control

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-6
Safety Belts
.............................................. 1-6
Child Restraints
.......................................1-27
Air Bag Systems
......................................1-46
Restraint System Check
............................1-54
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-9
Windows
.................................................2-14
Theft-Deterrent Systems
............................2-16
Starting and Operating Your Vehicle
...........2-17
Mirrors
....................................................2-31
OnStar
®System
......................................2-34
Storage Areas
.........................................2-35
Sunroof
..................................................2-36
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-2
Climate Controls
......................................3-17
Warning Lights, Gages and Indicators
.........3-26
Driver Information Center (DIC)
..................3-42
Audio System(s)
.......................................3-44Driving Your Vehicle....................................... 4-2
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-31
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
................. 5-8
Headlamp Aiming
.....................................5-48
Bulb Replacement
....................................5-50
Windshield Wiper Blade Replacement
.........5-55
Tires
......................................................5-56
Appearance Care
.....................................5-77
Vehicle Identication
.................................5-85
Electrical System
......................................5-86
Capacities and Specications
.....................5-92
Normal Maintenance Replacement Parts
......5-93
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
............................ 7-9
Index.................................................................1
2003 Buick Regal Owner ManualM
2003 - Regal Owner Manual

Vehicle Damage Warnings
Also, in this book you willfind 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 specific component, control,
message, gage or indicator.
If you need helpfiguring out a specificnameofa
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
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2003 - Regal OM

Trunk
{CAUTION:
It can be dangerous to drive with the trunk lid
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 trunk lid open
or if electrical wiring or other cable
connections must pass through the seal
between the body and the trunk lid:
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“Climate Controls”
in the Index.
If you have air outlets on or under the
instrument panel, open them all the way.
See“Engine Exhaust”in the Index.
Trunk Lock
To unlock the trunk from the outside, insert the door key
and turn it. You can also press the trunk symbol on
your remote keyless entry transmitter.
Remote Trunk Release
Press the button located
inside of the glove box
door to release the trunk
from inside the vehicle.
The shift lever must be in
PARK (P) for the remote
trunk release button
to work.
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2003 - Regal OM

Running Your Engine While You
Are Parked
It’s 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.”
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the fan is at the highest setting. One place this
can happen is a garage. Exhaust—with
CO—can come in easily. NEVER park in a
garage with the engine running.
Another closed-in place can be a blizzard. See
“Winter Driving”in the Index.
{CAUTION:
It can be dangerous to get out of your vehicle
if the shift lever is not fully in PARK (P) with
the parking brakefirmly set. Your vehicle can
roll. Don’t leave your vehicle when the engine
is running unless you have to. If you’ve left the
engine running, the vehicle can move
suddenly. You or others could be injured. To
be sure your vehicle won’t move, even when
you’re on fairly level ground, always set your
parking brake and move the shift lever to
PARK (P).
Follow the proper steps to be sure your vehicle won’t
move. SeeShifting Into Park (P) on page 2-25.
If you are parking on a hill and if you’re pulling a trailer,
also seeTowing a Trailer on page 4-35.
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Instrument Panel Overview...............................3-2
Hazard Warning Flashers................................3-4
Other Warning Devices...................................3-4
Horn .............................................................3-5
Tilt Wheel.....................................................3-5
Turn Signal/Multifunction Lever.........................3-5
Exterior Lamps.............................................3-10
Interior Lamps..............................................3-13
Accessory Power Outlets...............................3-15
Auxiliary Power Connection (Power Drop).........3-16
Ashtrays and Cigarette Lighter........................3-17
Climate Controls............................................3-17
Dual Climate Control System..........................3-17
Dual Automatic Climate Control System...........3-20
Outlet Adjutment...........................................3-24
Passenger Compartment Air Filter...................3-24
Warning Lights, Gages and Indicators.............3-26
Instrument Panel Cluster................................3-27
Speedometer and Odometer...........................3-28
Tachometer.................................................3-29
Safety Belt Reminder Light.............................3-29
Air Bag Readiness Light................................3-30
Charging System Light..................................3-31
Brake System Warning Light..........................3-31
Anti-Lock Brake System Warning Light.............3-32
Traction Control System (TCS) Warning Light . . .3-33
Low Traction Light
........................................3-33Engine Coolant Temperature Warning Light......3-34
Engine Coolant Temperature Gage..................3-34
Tire Pressure Light.......................................3-35
Malfunction Indicator Lamp.............................3-35
Oil Pressure Light.........................................3-38
Low Oil Level Light.......................................3-39
Change Engine Oil Light................................3-39
Security Light...............................................3-40
Cruise Control Light......................................3-40
Low Washer Fluid Warning Light.....................3-40
Door/Trunk Ajar Warning Light........................3-40
Service Vehicle Soon Light............................3-41
Fuel Gage...................................................3-41
Low Fuel Warning Light.................................3-42
Driver Information Center (DIC).......................3-42
Audio System(s).............................................3-44
Setting the Time...........................................3-45
Radio with Cassette......................................3-45
Radio with Cassette and CD..........................3-49
Theft-Deterrent Feature..................................3-55
Audio Steering Wheel Controls.......................3-57
Understanding Radio Reception......................3-57
Care of Your Cassette Tape Player.................3-58
Care of Your CDs.........................................3-59
Care of Your CD Player................................3-59
Backglass Antenna.......................................3-59
Section 3 Instrument Panel
3-1
2003 - Regal OM

The main components of the instrument panel are the following:
A. Exterior Lamps Control
B. Turn Signal/Multifunction Lever
C. Instrument Panel Cluster
D. Audio Steering Wheel Controls
E. Air Outlets
F. Side Window Defogger Outlet
G. Hood ReleaseH. Tilt Wheel Lever
I. Horn
J. Audio System
K. Ashtray
L. Climate Control
M. Glove Box
N. Instrument Panel Fuse Block
3-3
2003 - Regal OM

When adding electrical equipment, be sure to follow the
proper installation instructions included with the
equipment.
For information on accessing the connection and
electrical hookup, please refer to your service manual.
To order a service manual,Service Publications
Ordering Information on page 7-10.
Ashtrays and Cigarette Lighter
The center front ashtray is located just below the
instrument panel’s comfort controls.
To remove the ashtray, open the storage door. Then
open the small black door, lift up on the ashtray and pull
it out.
Notice:Don’t put papers or other flammable
items into your ashtrays. Hot cigarettes or other
smoking materials could ignite them, causing
a damaging fire.
To use the lighter, just push it in all the way and let go.
When it’s ready, it will pop back out by itself.
Notice:Don’t hold a cigarette lighter in with your
hand while it is heating. If you do, it won’t be able to
back away from the heating element when it’s
ready. That can make it overheat, damaging the
lighter and the heating element.
Climate Controls
Dual Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
Manual Operation
To change the current mode, select one of the following
settings on the right knob.
MAX (Maximum Air-Conditioning):This mode
recirculates much of the air inside your vehicle and
sends it through the instrument panel outlets. The
air-conditioning compressor will run automatically in
this setting unless the outside temperature is
below 40°F(4°C).
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2003 - Regal OM

On cool, but sunny days, the sun may warm your upper
body, but your lower body may not be warm enough.
Select BI-LEV and set the temperature levers to a
comfortable setting. The system will bring in outside air
and direct it to your upper body, while sending slightly
warmed air to your lower body. Push the A/C button for
cooling.
Defogging and Defrosting
Fog on the inside of the 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 blend mode to clear the windows of fog
or moisture and warm the passengers. Use the defrost
mode to remove frost or fog from the windshield
more quickly. For best results, clear all snow and ice
from the windshield before defrosting.
0DEF (Defrost):This setting, located on the right
knob, directs most of the air through the defroster
and the side window outlets. Some of the air is directed
to thefloor and side window outlets. The air-conditioning
compressor will run automatically in this setting unless
the outside temperature is below 40°F(4°C).To defrost the window quickly, turn the mode knob to
the defrost setting and turn the driver’s and passenger’s
temperature levers all the way to the red area.
To warm passengers while keeping the windows clear,
use BLEND.
Do not drive the vehicle until all the windows are clear.
Rear Window Defogger
0
(Rear):Press the button to turn the defogger on.
The rear window defogger will shut off after about
15 minutes. If you turn it on again, the rear window
defogger will only run for about seven and one
half minutes before turning off. You can also turn it off
by pressing the button again.
Do not drive the vehicle until all the windows are clear.
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.
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2003 - Regal OM