2002 BUICK RANDEZVOUS air condition

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NOTICE:
Modifications made to the engine, transaxle,
exhaust, intake or fuel system of your vehicle or
the replacement of the original tires with other
than those of the same Tire Performance Criteria
(TPC) can affect your vehicle's emission controls
and may cause the SERVICE ENGINE SOON or
CHECK ENGINE light to come on.
Modifications to these systems could lead to
costly repairs not covered by your warranty. This
may also result in a failure to pass a required
Emission Inspection/Maintenance test.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running. If the light doesn't come on, have it repaired.
This light will also come on during a malfunction in
one of two ways:

Light Flashing
-- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service may be required.

Light On Steady
-- An emission control
system malfunction has been detected on your
vehicle. Dealer or qualified service center diagnosis
and service may be required.

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If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:

Reducing vehicle speed.

Avoiding hard accelerations.

Avoiding steep uphill grades.

If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.
If the light stops flashing and remains on steady, see ªIf
the Light Is On Steadyº following.
If the light continues to flash, when it is safe to do so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least 10 seconds and restart the
engine. If the light remains on steady, see ªIf the Light
Is On Steadyº following. If the light is still flashing,
follow the previous steps, and drive the vehicle to your
dealer or qualified service center for service.If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. See ªFilling Your Tankº in the Index. The
diagnostic system can determine if the fuel cap has been
left off or improperly installed. A loose or missing fuel
cap will allow fuel to evaporate into the atmosphere. A
few driving trips with the cap properly installed should
turn the light off.
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently as designed since small amounts of
air are sucked into the fuel line causing a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure to install the fuel cap properly. See
ªFilling Your Tankº in the Index. It will take a few
driving trips to turn the light off.

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Message Center
The message center is located at the top of the
instrument panel cluster in between the tachometer and
speedometer. It gives you important safety and
maintenance facts.
Charging System Indicator Message
The charging system
battery symbol will come
on in the message center
when you turn on the
ignition as a check to
show you it is working.
It will remain on as long as the engine is not running. It
should go out once the engine is running. If it stays on,
or comes on while you are driving, you may have a
problem with the charging system. It could indicate that
you have problems with a generator drive belt, or
another electrical problem. Have it checked right away.
Driving while this indicator appears in the message
center could drain your battery.
If you must drive a short distance with the message on,
be certain to turn off all your accessories, such as the
radio and air conditioner.
Service Traction System Warning
Message (Option)
United States Canada
If your vehicle has the traction control system and this
message is displayed when you're driving, there may be
a problem with your traction control system. Your
vehicle may need service.
When this message is displayed, the traction control system
will not limit wheel spin. Adjust your driving accordingly.
If there's an engine
-related and brake system problem
that is specifically related to traction control, the traction
control system will turn off and the warning message
will come on. If the brake system problem is caused by
the brakes beginning to overheat, the brakes will need to
cool down before the traction control system warning
message will turn off.
If the traction control system warning message comes on
and stays on for an extended period of time when the
system is turned on, your vehicle needs service.

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Service Vehicle Soon Message
United States Canada
This light will come on if your vehicle has certain
non
-emission related problems.
For example, if the entire electrical system fails to send
and receive messages from the vehicle's components,
this message will come on.
These problems may not be obvious and may affect
vehicle performance or durability. Consult a qualified
dealership for necessary repairs to maintain top
vehicle performance.
AWD Disable Warning Message (Option)
United States Canada
You will receive this message when there is a spare tire
on the vehicle, when the anti
-lock brake system warning
light comes on, or when the rear differential fluid is in
an overtemp condition. The message will go out when
the differential fluid cools.
The all
-wheel-drive system will be disabled until the
compact spare tire is replaced by a full
-size tire. If the
warning message is still on after putting on the full
-size
tire, you need to reset the warning message. To reset the
warning message, turn the ignition to OFF then to ON.
If the message stays on, see your dealer right away. See
ªAll
-Wheel Driveº in the Index for more information.

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When the System Does Not Seem to Work Properly
The light will flash red when shifting into REVERSE (R)
if a trailer was attached to your vehicle, or a bicycle or an
object was on the back of, or hanging out of your liftgate
during your last drive cycle. The light will continue to
flash whenever in REVERSE (R), until your vehicle is
driven forward at least 15 mph (25 km/h) without any
obstructions behind the vehicle.It may also flash red if the ultrasonic sensors are not
kept clean. So be sure to keep your rear bumper free of
mud, dirt, snow, ice and slush or the system may not
work properly. Other conditions that may affect system
performance include things like the vibrations from a
jackhammer or the compression of air brakes on a very
large truck. If after cleaning the rear bumper and then
driving forward at least 15 mph (25 km/h), the display
continues to flash red, see your dealer.
As always, drivers should use care when backing up a
vehicle. Always look behind you, being sure to check
for other vehicles, obstructions and blind spots.
For cleaning instructions, see ªCleaning Your Vehicleº
in the Index.

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Comfort Controls
This section tells you how to make your air system work
for you.
With this system, you can control the heating, cooling
and ventilation in your vehicle. Your vehicle also has
a flow
-through ventilation system described later in
this section.
Dual Manual Comfort Control
Fan Knob
The left knob is used to select the force of air you want.
Turn the knob clockwise to increase fan speed and
counterclockwise to decrease fan speed. The fan must be
turned on for the air conditioning compressor to operate.Temperature Knob
The center knob controls the temperature of the air
coming through the system. Turn the knob clockwise
(toward the red area) for warmer air. Turn the knob
counterclockwise (toward the blue area) for cooler air.
Mode Knob
The right knob is used to select and determine the
direction of the air flowing into the vehicle.
(Upper): This setting directs air through the
instrument panel outlets and the rear console outlets.
(Bi-Level): This setting directs air into your
vehicle in two ways. Cooler air is directed toward your
upper body through the front instrument panel outlets
and the rear console outlets, while warmed air is
directed through the heater ducts at your feet.
(Lower): This setting brings in most of the air
through the floor ducts. It is also used to send air to the
rear of the vehicle. Keep the area under the front seats
free of objects that could obstruct airflow to the rear of
the vehicle.

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(Defog): This setting directs air to the windshield
and through the floor ducts. This mode is particularly
useful during cold or inclement weather because of your
vehicle's larger windshield area.
(Defrost): This setting directs most of the air to the
windshield and side window vents.
Mode Buttons
(Recirculation): Press this button (the light will
glow) to recirculate the air inside of your vehicle and to
limit the amount of outside air and/or odors entering
the vehicle.
Press this button again (the light will go off) to send
outside air into your vehicle. Using this setting while
trying to defrost or defog the windows will help clear
the vents of moisture. When the defog, defrost or lower
setting is selected, the system will automatically go to
outside air mode.
Operating the Heating/Ventilation/Air Conditioning
(HVAC) system in the recirculation mode may cause
fogging of the vehicle's windows when the weather
is cold and damp. To clear the fog, switch the HVAC
system to either the defog or defrost mode and increase
the fan speed. To avoid refogging of the windows,
operate the HVAC system in the outside air mode.Air Conditioning
On very hot days, your vehicle will cool down more
quickly and economically if you open the windows long
enough to let hot, inside air escape. For all settings,
adjust the temperature knob and fan speed as desired.
To get maximum cooling or a quick cool
-down on
very hot days, press the A/C and recirculation buttons
(the lights will glow) and turn the temperature knob
counterclockwise (toward the blue area). Then, adjust
the mode knob to direct the air to the desired location.
This setting should not be used for long periods of time
because the air may become too cold and dry.
Push the A/C button again (the light will go off) to turn
off the air conditioning.
When the air conditioner compressor is on, you may
sometimes notice slight changes in your vehicle's engine
performance and power. This is normal. The system is
designed to help fuel economy while it maintains the
desired cooling level.
The air conditioner removes moisture from the air, so
you may sometimes notice water dripping from under
your vehicle's engine compartment when it is idling or
after it has been turned off. This is normal.

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Heating
Turn the temperature knob clockwise (toward the red
area) to warm the air.
In the lower mode, outside air will be brought in and
sent through the floor outlets. The heater works best if
you keep your windows closed while using it.
The bi
-level setting is designed for use on sunny days
when the air is only moderately warm or cool. On days
like these, the sun may adequately warm your upper
body, but your lower body may not be warm enough.
For the best results, move the temperature knob to the
middle position, and then adjust it for comfort.
Your vehicle has a computer controlled transaxle
designed to warm up the engine faster when the outside
temperature is 35
F (2
C) or colder. You may notice
that the transaxle will shift at a higher vehicle speed
until the engine is warmed up. This is a normal
condition designed to provide heat to the passenger
compartment and defrost the windows more quickly.
If your vehicle is equipped with an engine coolant heater
and you use it during cold weather, 0
F (
-18
C) or
lower, your heating system will provide heat more
quickly because the engine coolant is already warmed.
See ªEngine Coolant Heaterº in the Index.Defogging and Defrosting
Your system has two settings for clearing the front and
side windows.
To rapidly defrost the windshield, turn the temperature
knob all the way clockwise (to the red area) and turn the
mode knob to defrost. Adjust the fan to the highest speed.
To keep the windshield clear and bring in heated air
through the heater ducts, turn the mode knob to defog.
When the temperature outside is above freezing, the air
conditioner compressor will run in these settings to help
remove moisture from the air.
Your vehicle is equipped with side window defogger
vents located on the top of the instrument panel. For
additional side window defogging, turn the mode knob
to the bi
-level setting and adjust the fan to the highest
speed. Aim the side vents on the instrument panel
toward the side windows. For increased airflow to the
side vents, close the center vents.
Operating the HVAC system in the recirculation mode may
cause fogging of the vehicle's windows when the weather is
cold and damp. To clear the fog, switch the HVAC system to
either the defog or defrost mode and increase the fan speed.
To avoid re
-fogging of the windows, operate the HVAC
system in the outside air mode.
For additional information, refer to ªRecirculationº
earlier in this section.