air condition CHEVROLET ASTRO CARGO VAN 2002 2.G Owners Manual

2-32
CAUTION:
It can be dangerous to get out of your vehicle if
the shift lever is not fully in PARK (P) with the
parking brake firmly 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. See ªShifting Into PARK (P)º in the Index.
If you're pulling a trailer, see ªTowing a Trailerº in the Index.
Locking Rear Axle (If Equipped)
If your vehicle has this feature, your locking rear axle
can give you additional traction on snow, mud, ice, sand
or gravel. It works like a standard axle most of the time,
but when one of the rear wheels has no traction and
the other does, this feature will allow the wheel with
traction to move the vehicle.
All-Wheel Drive (Option)
If your vehicle has
all
-wheel drive, your
engine's driving power is
sent to all four wheels for
extra traction when needed.
This is like four
-wheel drive, but there is no separate
lever or switch to engage or disengage the front axle.
It is fully automatic, and adjusts itself as needed for
road conditions.
You may experience a brief vehicle vibration upon
acceleration when driving in slippery conditions.
This is normal and is an indication that the all
-wheel
drive system is functioning properly.
Horn
To sound the horn, press the horn symbol on the center
of the steering wheel.

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Driver Information System (If Equipped)
This system displays the outside air temperature, compass
direction and trip information in the overhead console.
US/MET (United States/Metric): The US/MET
(United States/metric) button allows you to switch the
display between the English and metric system.
MODE: The MODE button can be used to toggle
between three modes of operation: OFF, COMP/TEMP
and TRIP.COMP/TEMP (Compass/Temperature): This
display provides the outside temperature and one of
eight compass readings to indicate the direction the
vehicle is facing.
Before you turn on the ignition and move the vehicle,
the temperature indicated will be the last outside
temperature recorded with the ignition on. If the outside
temperature is 37
F (3
C) or lower, the display will
toggle between the word ICE and the current
temperature every eight seconds. This is a warning to
the driver that road conditions may be icy, and that
appropriate precautions should be taken.
The compass is self
-calibrating, so it does not
need to be manually set. However, if C (Calibration) is
displayed, the compass will need to be calibrated. You
may also place the compass in a noncalibrated mode by
pressing and holding the MODE and US/MET buttons
simultaneously while in the COMP/TEMP mode. After
about 10 seconds, the compass will display C and you
can release the buttons. Drive the vehicle in a complete
360
circle three times at a speed of less than 5 mph
(8 km/h), and the compass will function normally.
Once the calibration is complete, the display will return
to a compass reading.

2-65
If the air bag readiness light stays on after you start the
vehicle or comes on when you are driving, your air bag
system may not work properly. Have your vehicle
serviced right away.
CAUTION:
If the air bag readiness light stays on after you
start your vehicle, it means the air bag system
may not be working properly. The air bags in
your vehicle may not inflate in a crash, or they
could even inflate without a crash. To help avoid
injury to yourself or others, have your vehicle
serviced right away if the air bag readiness light
stays on after you start your vehicle.
The air bag readiness light should flash for a few
seconds when you turn the ignition key to RUN. If the
light doesn't come on then, have it fixed so it will be
ready to warn you if there is a problem.
Charging System Indicator Light
The charging system light
will come on briefly when
you turn the ignition on, but
the engine is not running, as
a check to show you the
light is working.
Then 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 electrical charging system.
It could indicate that you have a loose accessory drive
belt, or another electrical problem. Have it checked
right away. Driving while this light is on could drain
your battery.
If you must drive a short distance with the light on,
be certain to turn off all your accessories, such as the
radio and heater/air conditioner.

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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.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.

3-2
Comfort Controls
This section tells you how to make your air system work
for you. Your comfort control system with air
conditioning uses ozone
-friendly refrigerant.
With these systems, 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.
Heating System
If your vehicle does not have air conditioning, your
heater controls will look like this.Fan Knob
The fan know is located on the left of the control
panel. This control has four positions. To increase
airflow, turn the knob toward HI. To decrease airflow,
move it toward LO.
Temperature Knob
This knob is next to the fan knob. It controls the
temperature of the air flowing into your vehicle. Turn
the knob clockwise for warmer air. Turn the knob
counterclockwise for cooler air.
Function Knob
This knob is on the right of the temperature knob.
The function knob allows you to choose the direction of
air delivery.
OFF: This setting turns the system off.
(Vent): The air comes out at the vents on your
instrument panel.

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(Bi-level): With this setting, the outside air comes
out both the instrument panel vents and floor ducts.
Adjust the temperature knob for warmer or cooler air.
(Floor): Most of the air comes out near the floor.
The rest comes out from the defroster vents under the
windshield and at the front side windows.
(Blend): With this setting, the outside air comes
out both the floor ducts and defroster vents. Adjust the
temperature knob for warmer or cooler air.
DEF (Defrost): This setting operates the defroster.
Most of the air comes out near the windshield, with
some going to the floor ducts and front side windows.
Heating/Air Conditioning System
(If Equipped)
If your vehicle has air conditioning, your heating/air
conditioning controls will look like this.
Fan Knob
The fan knob is located on the left of the control panel.
This knob has four positions. To increase airflow,
turn the knob toward HI. To decrease airflow, move it
toward LO.

3-4
Temperature Knob
This knob is next to the fan knob. It controls the
temperature of the air flowing into your vehicle. Turn
the knob clockwise for warmer air. Turn the knob
counterclockwise for cooler air.
Function Knob
This knob is located on the right side of the temperature
knob. The function knob allows you to choose the
direction of air delivery.
OFF: This setting turns the system off.
MAX A/C (Maximum Air Conditioning): This setting
cools the air the fastest, by recirculating the inside air.
A/C (Air Conditioning): This setting brings in outside
air, cools and dehumidifies it.
(Bi-Level): This setting brings in outside air and
blows it out through the floor ducts and the instrument
panel vents. If you move the temperature knob between
hot and cold, cooler air will come out of the upper vents
while warmer air comes out of the floor ducts. The air
conditioning compressor may operate in this setting to
cool the air.
(Vent): The air comes out at the vents on your
instrument panel. The air conditioning compressor will
not run in this position. Adjust the temperature knob for
warmer or cooler air.
(Floor): Most of the air comes out near the floor.
The rest comes out from the defroster vents under the
windshield and at the front side windows.
(Blend): With this setting, the outside air comes
out of both the floor ducts and defroster vents. Adjust
the temperature knob for warmer or cooler air. The air
conditioning compressor may operate in this setting to
dehumidify the air.
DEF (Defrost): This setting operates the defroster.
Most of the air comes out near the windshield, with
some going to the floor ducts and front side windows.
The air conditioning compressor may operate in this
setting to dehumidify the air.

3-5 Rear Heating System (Option)
You may have the optional rear heater. The three-speed
fan thumbwheel is to the right of the radio. Turn the
thumbwheel toward HIGH for higher airflow in the
rear area. Turn the thumbwheel to OFF to turn the
system off.
Rear Air Conditioning System (Option)
You may have rear air conditioning. The rear air
conditioning thumbwheel is located to the right of the
heater controls. Turn the thumbwheel toward HIGH for
higher airflow in the rear area. Turn the switch to OFF
to turn the system off.

3-6 Air Conditioning
Before using your vehicle's air conditioning, open the
windows to clear the vehicle of hot air. This reduces the
time it takes for your vehicle to cool down. Then keep
your windows closed for the air conditioner to work at
its best.
You can use MAX A/C with the temperature knob in
the blue area when it's really hot outside and you need
to cool the inside air quickly. MAX A/C lets in only a
little air from the outside.
If you first use MAX A/C, you can then use A/C with
the temperature knob in the blue area as soon as the
vehicle has cooled down, so outside air will be going
through your vehicle.
If your vehicle has rear air conditioning, setting it on LOW
may enhance the front air conditioning performance by
allowing trapped refrigerant in the rear lines to circulate.
The rear air conditioning system will only send cooled
air if the front system is on. It can still be used to
circulate air, even if the front system is off.
When the air conditioning, defrost or blend is on, you
may notice a slight increase or decrease in engine speed,
due to compressor operation. This is normal because the
system is designed to cycle the compressor on and off to
maintain the desired temperature.
Heating
On cold days, use the floor setting with the temperature
knob in the red area. Outside air will be brought in
through the floor ducts. The heater works best if you
keep your windows closed while using it.
If you use the optional engine coolant heater before
starting your engine, your heating system will produce
warmer air faster to heat the passenger compartment in
cold weather. See ªEngine Coolant Heaterº in the Index.
Defrosting
Use defrost to remove fog or ice from the windshield
quickly in extremely cold conditions. The temperature
knob should be in the red area and the fan control
toward high. The air conditioning compressor may
operate in this setting to dehumidify the air.
The blend setting is useful for cold weather with a large
number of passengers or very humid conditions to help
keep the windshield clear.

3-8 Ventilation System
For mild outside temperatures when little heating or
cooling is needed, use the vent setting to direct outside
air through your vehicle. Air will flow through the
instrument panel vents.
Your vehicle's flow
-through ventilation system supplies
outside air to the inside of your vehicle when it is
moving. With the side windows closed, air will flow into
the front air inlet grilles at the base of the windshield,
through the vehicle and out the rear air exhaust valve.
Outside air will also enter the vehicle when the heater
or the air conditioning compressor is running.
Your vehicle has air vents near the center and on the
sides of the instrument panel that allow you to adjust the
direction and the amount of airflow inside the vehicle.
Move the dial on the vent up or down to direct airflow
to your preference. Increase or reduce the amount of
airflow by opening and closing the louvers. The vents
turn to direct the airflow from side to side.