air conditioning CHEVROLET ASTRO PASSENGER 1993 1.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine Comfort Controls & Audio Systems
In this section you’ll find out how to operate the comfort control and audio
systems offered with your vehicle. Be sure to read about the \
particular system
supplied with your vehicle.
For explanation of vehicle symbols in this section, refer to “Vehicle
Symbols” in Section 0.
Comfort Controls ........................................................................\
........................... 3-3
Flow-Through Ventilation System
..................................................................... 3-3
Heating System
........................................................................\
.......................... 3-5
Heating/Air Conditioning System
...................................................................... 3-6
Rear Heater
........................................................................\
............................... 3-7
Rear Air Conditioning
........................................................................\
................ 3-8
Rear Window Defogger
........................................................................\
............. 3-8
Engine Block Heater
........................................................................\
..................... 3-9
Audio Systems
........................................................................\
............................... 3-9
FM Stereo ........................................................................\
................................ 3-1 0
AM.. ........................................................................\
........................................... 3-1 0
AM Stereo ........................................................................\
................................ 3-1 0
How to Operate Your ETR@ AM Radio ........................................................ 3-11
How to Operate Your ETR@ AM-FM
Stereo Audio System
........................................................................\
........... 3-1 3
3-1

Downloaded from www.Manualslib.com manuals search engine Comfort Controls
Flow-Through Ventilation System
K3302
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 valves. Outside air will also en\
ter the vehicle
when the heater or the air conditioning fan is running.
Venfilation Tips
Keep the hood and front air inlet free of ice, snow, or any \
other
obstruction (such as leaves). The heater and defroster will w\
ork far better, reducing the chance of fogging the inside
of your windows.
When you enter a vehicle in cold weather, turn the blower fan\
to HIGH
for a few moments before driving
off. This helps clear the intake ducts
of snow and moisture, and reduces the chance of fogging the i\
nside of
your windows.
Keep the air path under the front seats clear of objects. Thi\
s helps air
to circulate throughout your vehicle.
3-3

Downloaded from www.Manualslib.com manuals search engine Heating System
PO450
If your vehicle does not have air conditioning, this is what your heating
system will
look like.
Fan Lever
The top lever has five positions. To increase the air flow, move the lever
toward
HIGH. To decrease the air flow, move it toward OFF.
Temperature Lever
The left lever lets you select the temperature of the air flowing into your
vehicle. Move the lever up for warmer air. Move the lever dow\
n for cooler air.
Function Lever
The right lever can be moved to four different functions.
Defrost: The setting with the defrost symbol operates the defroster. Mos\
t of
the air comes out near the windshield, with some going to the floor vents.
Use this when you get fog or ice on the windshield.
HTR (Heater): 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.
This is best for cold weather.
VENT: The air comes out at the vents on your instrument panel and \
at your
front side windows.
BLEND: With this setting, the heated outside air comes out between the
heater vents and defroster vents with some air coming through \
the side
vents. Adjust the temperature lever for warmer or cooler air.
3-5

Downloaded from www.Manualslib.com manuals search engine HeatingAir Conditioning System
PO451
If your vehicle has air conditioning, your heating/air conditioning \
system will
look like this.
Before using your vehicle's air conditioning, open the windows to clear the
vehicle of hot air. Close the windows when using the system.
Fan Lever
The top lever has five positions. To increase the air flow, move the lever
toward
HIGH.
Temperature Lever
The left lever lets you select the temperature of the air flowing into your
vehicle. Move the lever up for warmer air. Move the lever down for cooler \
air.
Function Lever
The right lever can be moved to seven different heating and air conditioning
functions.
Defrost: The setting with the defrost symbol operates the defroster. Mos\
t of
the air comes out near the windshield, with some going to the floor vents
and side window defrost vents. Use this when you get fog or ice on the
windshield.
BLEND: With this setting, the heated outside air comes out between th\
e
heater vents and defroster vents, with some air coming through \
the side
vents. Adjust the temperature lever for warmer or cooler air.
3-6

Downloaded from www.Manualslib.com manuals search engine HTR (Heater): 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.
This is best for cold weather.
VENT The air comes out at the vents on your instrument panel and at your
front side windows. The air conditioner will not run. Adjust t\
he temperature
lever for warmer or cooler air.
BI-LEV NC: With this, outside air comes in through the heater floor vent and
the instrument panel vents.
If you move your temperature control lever
between cold and hot, cooler air will come out of the upper vents while
warmer air comes out of the
floor vent. This setting is useful in cool weather
with bright sunlight.
NORM NC: This setting cools the outside air. If you first used MAX NC, use
NORM NC as soon as the vehicle has cooled down, so outside air will be
going through your vehicle.
MAX NC: This cools the air the fastest. Move the other lever all the \
way to
Cold.
MAX A/C lets in only a little air from the outside. You can use MAX
NC at first when it’s really hot outside and you need to cool off quickly.
When the air conditioning or defrost is on, you may notice a slight increase
or decrease in engine .speed.
Rear Heater
You may have the optional rear heater. The three-speed fan switch is above
the radio. Slide the lever toward
HI for warmer air in the rear area. Move the
switch to
OFF to turn the system off.
~ PO654
3-7

Downloaded from www.Manualslib.com manuals search engine Comfort Contmls & Audio Systems
Rear Air Conditioning
You may have rear air conditioning. The rear air conditioning switch is loca\
ted
above the radio at the top of the instrument panel. Slide the lever toward
HI
for cooler air in the rear area. Slide the lever to OFF to turn the system off.
If your vehicle has rear air conditioning, setting it on LOW may enhance front
NC performance by allowing trapped refrigerant in rear lines to circulate.
The system
will only send cooled air if the front system is on. It can still be
used
to recirculate air, even if the front system is off.
Before using the rear air conditioning, open the windows to cl\
ear the vehicle
of hot air. Close the windows when using the system.
Rear Window Defogger
HATCH REL REAR DEFOG
If your vehicle has this option the rear window will have lines \
running across
the glass. These lines heat your window.
For best results, clear the window of as much snow and ice as possible
before using the rear window defogger.
To turn on the rear window defogger, find the switch marked
Rear Defog on
your instrument panel to the left of the steering column. Press the top of the
switch until the light in the switch comes on, then release it. The rear window
defogger will only work when the ignition is in the
RUN position.
You can turn the defogger
off at any time by pressing the bottom of the
switch. The defogger will shut itself
off after several minutes so that the glass
3-8

Downloaded from www.Manualslib.com manuals search engine Service & Appearance Care
braking system-for example, when your brake linings wear down and you
have
to have new ones put in-be sure you get new genuine GM
replacement parts.
If you don’t, your brakes may no longer work properly. For
example,
if someone puts in brake linings that are wrong for your vehicle, the
balance between your front and rear brakes can change, for the\
worse. The
braking performance you’ve come to expect can change in many\
other ways
if someone puts in the wrong replacement brake parts.
Hydro-Boost Brake System (Hydraulic Pump)
The power steering pump is also used as the Hydro-Boost pump. \
Refer to
“Power Steering Fluid” in this section when. checking the fluid level or adding
fluid.
Fluid Leak Check
After the vehicle has been parked for awhile, inspect the surf\
ace beneath the
vehicle for water, oil, fuel or other fluids. Water dripping f\
rom the air
conditioning system is normal. If you notice fuel leaks or fumes, the causes
should be found and corrected at once.
Battery
Every new GM vehicle has
add water
to one of these,
a Delco Freedom@ battery.
the original battery’s label. a Delco Freedom@ battery. You never have
to
When it’s time for a new battery, we recommend
Get one that has the catalog number shown on
Vehicle Storage
If you’re not going to drive your vehicle for 25 days or more, take off the
black, negative
(-) cable from the battery. This will help keep your battery
from running down.
I CAUTION
For more informarlon on vehicle storage, contact your dealer’\
s service
department, or write to:
Adistra Corporation 171 Hamilton Street Plymouth,
MI 48170
General Motors
of Canada, Limited
Customer Services Department
Oshawa, Ontario L1 J5Z6
In
Canada, write
to:
6-34

Downloaded from www.Manualslib.com manuals search engine replacement belt. Your dealership or parts supplier can help you with this.
The Accessory Drive Belt Routing label on your vehicle will sh\
ow you how to route the belt your vehicle uses.
Windshield Wiper Blade lnsetts
I
K3630
To replace your wiper blade inserts, pinch the two tabs on the wiper arm and
slide the insert out of the blade. When you slide the new one into place, be
sure the tabs are locked in position.
Air Conditioning
Every now and then have your dealership check your air conditi\
oning system
to be sure it has not lost any cooling ability.
If you think the system is not
working properly, have your dealership check it out as soon as\
possible.
The air conditioning will not work when the temperature is bel\
ow
40°F (4°C).
Lubrication
Accelerator Control System
Refer to the Maintenance Schedule to determine how often the accelerator
linkage pivot points must be lubricated and what type
of lubricant to use.
Accelerator cables and cruise control cables should not be lubr\
icated. Any
cables that are worn
or are hard to pull should be replaced.
When cleaning the engine compartment with water or steam, avoid\
directing
the flow onto the throttle linkage in a manner that would cause moisture to
enter the cables.
6-39

Downloaded from www.Manualslib.com manuals search engine Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the air conditioning
system in your vehicle needs refrigerant, be sure the proper refrigerant
is
used. If you’re not sure, ask your GM dealer.
Air Conditioning Refrigerant Capacity
TYPE SYSTEM QUANTITY
R-12 C-60 3.00
Ibs. (1.4 kg)
R-12 C-69 3.75 Ibs. (1.7 kg)
Crankcase
QUANTITY
ENGINE Without Filter
I With Filter
VIN CODE
4.3L
4.5 Quarts
(4.3 Liters) 4 Quarts (3.8 Liters) W 4.3L
4.5 Quarts (4.3 Liters) 4 Quarts (3.8 Liters) Z
All quantities are approximate.
After refill, the level
MUST be checked.
TO1 8E
Fuel Tank
TYPE QUANTITY
Standard 27 Gallons (102 Liters)
I
Quantity is approximate.
TO1 87 I
6-65

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Fuses and Circuit Breakers Usage
Name
Inst. Lps.
Pwr. Acc.
Horn-Dm.
Gages
Aux. Htr. NC
Stop-Haz.
Tail Lps.
Turn
BIU
Htr. NC
Radio
ECM B
ECM
I
Pwr. Wdo.
Wiper
Brake
Fog Lamps***
DRL**
Pow. Mirrors*
Trailer*
Circuits Protected
Instrument Panel Lamps, Radio Dial
Lamps, Heater Lamps
Power Door Locks, Power Seat
Horn Relay, Digital Clock, Cigarette
Lighter, Dome Lights, Radio Memory,
Glove Box Lamp
Instrument Cluster Gages, Brake
Switch, Audio Alarm, Headlight Switch
Illumination, Ash Tray Illumination,
Cruise Control
Auxiliary Heater-Rear NC
(if equipped)
Stop Lamps, Hazard Flash, Digital
Instrument Cluster
Headlamp Switch, Tail and Parking
Lamps
Direction Signal Flash, Back Up
Lamps
Front Heater
& Air Conditioning
Radio
Engine Control Module
Engine Control Module
Power Windows
Windshield Wiper
Anti-Lock Brake System,
Speedometer
Fog Lamps
Canadian Daytime Running Lights
Power Mirror
Trailer Wirina Harness
Fuse
10 Amp
30 Amp
20 Amp
25 Amp
20 Amp
20 Amp
20 Amp
20 Amp
10 Amp
10 Amp
10 Amp
25 Amp
15 Amp
15 Amp
10 Amp
3 Amp
30 Amr,
Circuit
Breaker
30 Amp
30 Amp
*In-line fuse.
**Canada only.
“*In-line fuse (certain models).
TO007
6-68