air condition CHEVROLET SUBURBAN 1994 Owners Manual

Driving In Snow (Diesel Engines)
When driving in a heavy snowstorm or in swirling snow with a diesel
engine, snow can get into
the air intake system. If you keep driving in these
conditions the air cleaner may get plugged, causing black smoke and loss of
power. In an emergency, if the air cleaner gets plugged with snow, you can
remove the air cleaner.
Then, drive to a place of safety as soon as possible
and put the air cleaner back
on.
Starting Your Diesel Engine
Your diesel engine starts differently than a gasoline engine.
1. Automatic Transmission:
Move your shift lever to “P’ (Park) or “N” (Neutral). Your engine
won’t start in any other position
- that’s a safety feature. To restart
when you’re already moving, use
“N” (Neutral) only.
NOTICE:
Don’t try to shift to 4‘P’’ (Park) if your vehicle is moving. If you
do, you could damage the transmission. Shift to
“P” (Park) only
when your vehicle is stopped.
2. Manual Transmission:
Move your shift lever to neutral and hold the clutch pedal to the floor
while starting
the engine. Your vehicle won’t start if the clutch pedal is
not all the way down - that’s a safety feature.
Turn your ignition
key to RUN. Don’t turn it to START.
With the ignition in RUN, the “GLOW PLUGS” light will come on. If
the engine is already warm, this light may
not come on. That’s normal.
During starting, your “GLOW
PLUGS” light may go on and off a few
times. This
is normal. This means that part of your engine is being
warmed up for better starting. When the light goes off, your engine is
ready to start.
Do not start the engine with this light on.
NOTICE:
If the “GLOW PLUGS” light stays on, it means that your
vehicle could have one
of several problems, so you should have it
serviced right away.
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Low Coolant Warning Light
The orange Low
Coolant Warning
light, if
you have one,
is located in the upper
left corner of the
instrument cluster.
If
you have a diesel engine, you have a low coolant light. If this light comes
on anytime the engine is running, your system is low on coolant and the
engine may overheat. See “Engine Coolant”
in the Index and have your
vehicle serviced
as soon as you can.
Charging System Warning Light
The red Charging
System Warning light
is located at the upper
right corner of the
instrument cluster.
The Charging System Warning light should come on briefly when you turn
on the ignition, before starting the engine, as a check to show you it is
working. After the engine starts, the light should go out. If it stays on or
comes
on while you are driving, you may have a problem with your
charging system. It could indicate a problem with the alternator drive belt,
or
some other charging system problem. Have it checked right away.
Driving while this light is on could drain your battery.
If
you must drive a short distance with this light on, it helps to turn off all
your accessories, such
as the radio and air conditioner.
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Comfort Controls and Audio Systems
Section
-
In this section you’ll find out how to operate the comfort control systems
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 the Introduction.
Comfort Controls . . . . . . . . . . ,
Flow-Through Ventilation System . . .
. . . . . . . . . . * . . . . . 3-2
,................... 3-2
Heating System
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Electronic Heating/Air Conditioning System . . . . . . . . . . . . . . . . . . . 3-5
Rear Air Conditioning and Heating Systems (Wagon Models)
. . . . . 3-8
Rear Window Defogger , , . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Audiosystems
............................................ 3-12
FM Stereo . . . . . . . . . . 3-12 ... ..................I...
AM .........................,,....................... 3-12
AMStereo
............................................. 3-12
How to Operate Your AM ETR@ Radio
. . . . . . . . . . . . . . . . . . . . . . 3-13
How to Operate Your AM-FM Stereo Audio System and
Cassette Player
. . . . . . . . . . . . . , . . . . . . . . . . . . . , , . . . . . . . . . 3-14
How to Operate Your AM-FM Stereo Audio System and
Cassette Player with Graphic Equalizer
. . . . . . . . . . . . . . . . . . . 3-1 8
Care of Your Cassette Tape Player . , , , , . . . . . . . . . . . . . . . . . . . 3-22
Fixed Mast Antenna
. . . . . . . . . . ............ 3-22 ...........
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Comfort Controls
Flow-Through Ventilation System
Your vehicle’s flow-through ventilation system supplies outside air to the
inside of your vehicle when it is moving.
I
With the side
windows closed, air
will flow into the front
I
F”
air inlet
through
and out
exhaust grilles,
the
vehicle
the rear air
valves.
Outside air will also enter the vehicle when the heater or the air
conditioning fan is running, unless your optional air conditioner is in the
MAX mode. For more information see “MAX Button” in this section.
Ventilation Tips
Keep the hood and front air inlet free of ice, snow, or any other
obstruction
(such as leaves). The heater and defroster will work 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 HI
for a few moments before driving off. This helps clear the intake ducts
of snow and moisture, and reduces the chance of fogging the inside of
your windows.
Keep the air path under the front seats clear of objects. This helps air to
circulate throughout your vehicle.
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Air Vents
If your vehicle does not have air conditioning, there are air vents below the
instrument panel.
Use the handles below
your steering wheel, with the vent symbols
on them, to open and
close the vents.
%$$$ * 2, ,.' !';."." ,i ':* 2 p*~$;mP$ .',.;"X,, ,., I If your vehicle has air
conditioning, you will
find air vents in the
center and on the sides
of your instrument
panel.
You can move the vents grilles from side to side or up and down to direct
the flow
of air, or close the vents altogether.
When you close a vent, it will increase the flow of air coming out
of any
vents that are open.
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Heater Output
Engine Coolant Heater
If your vehicle has a diesel engine, it is equipped with an engine coolant
heater. An engine coolant heater
is optional on gas engine vehicles. You can
use an engine coolant heater during initial start-up
in cold weather (20” F,
-8” C, or lower) to help heat the passenger compartment faster. Because an
engine coolant heater warms the engine coolant, your vehicle’s heating
system can provide some heat as soon as you start the engine.
The use
of an engine coolant heater also reduces the time it takes for the
engine to reach normal operating temperature, and shortens the time it takes
the heater
to reach full output. For more information, See “Engine Coolant
Heater” in the Index.
Diesel Engine
If you idle your diesel engine for a long time when it’s cold outside, your
heater may blow out cool air. This is normal. When you increase the engine
speed, your heater should blow
out warmer air. If it doesn’t, your coolant
level may be low. See “Engine Coolant”
in the Index to find out how to
check your coolant level.
Heating System (Without Air Conditioning)
If your vehicle does not have air conditioning, this is what your heating
system will look like.
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Function Lever
The upper lever on the control panel can be moved to three different heating
functions.
0 Vent (Left): Air comes out at the vents on your instrument panel and at
your front side windows.
a heat setting, is best for cold weather.
0 Defrost (Right): This setting operates the defroster. Air comes out near
the bottom of the windshield and at your front side windows. Use this
setting, along with
a heat setting, when you get fog or ice on the
windshield.
0 Heater (Center): Air comes out near the floor. This setting, along with
Placing the lever between positions sends air out both vents.
Temperature Lever
The lower lever on the control panel lets you select the temperature of the
air flowing into the passenger area
of your vehicle. Move the lever right
toward
(+) for warmer air. Move the lever left toward (-) for cooler air.
Fan Control Knob
The knob on the right side of the heating system control panel controls the
fan speed. The knob has four speed positions. To increase the air flow, turn
the knob toward (+). To decrease the air flow, turn it toward (-).
Electronic Heating/Air Conditioning System
If your vehicle has air conditioning, your heating/air conditioning system
will
look like this.
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When you first turn on your vehicle’s air conditioning, open the windows to
clear the vehicle
of hot air. Using the MAX button can also help. See
“MAX Button” in this section for more information.
.‘
s
...... Lj”. . ..-. .....
‘I ,OFF
..... .. ... : .
Function Display
Your system has a lighted display showing each system when it is operating.
During normal operation, all the lights won’t come on
at the same time.
Only the ones displaying the current settings will light.
Temperature Selector Bar
The bar under your system display lets you select the temperature of the air
flowing into the passenger area
of your vehicle. Press COLD for cooler air
and press HOT for warmer air. Release the bar when the system reaches the
temperature you want. The temperature is shown on the display by the
arrow moving between
C and H.
Air Controls (8L END)
The two buttons to the right of the system display control the air flow. You
can blend
the air flow to suit your needs. The amount of blending is shown
on the display by an arrow moving between the figure’s feet (floor air flow)
and head (vent air flow).
Left Button
Vent (Top) : Press the top of this button and the air flow will come through
the instrument panel vents.
Heater (Bottom) : Press the bottom of this button and the air flow will
come through the floor outlet.
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The air flow can be blended between the two positions. To blend between
positions press the side
of the button showing the area where you would like
more air flow. The system will automatically begin to blend toward the
position chosen.
To stop the system between positions, just press the SAME
side of the button again.
Right Button
Defrost (Top) : This setting operates the defroster. Air comes out near the
bottom of the windshield and at your front side windows. Use this setting,
along with a heat setting, when you get fog or ice on the windshield.
Heater (Bottom) : Press the bottom of this button and air comes out near
the floor. This setting, along
with a heat setting, is best for passenger
comfort in cold weather.
The air flow can be blended between the two positions.
To blend between
positions press the side of the button showing the area where
you would like
more air
flow. The system will automatically begin to blend toward the
position chosen. To stop the system between positions, just press
the SAME
side of the button again.
A/C Button
Press the button marked A/C to turn your air conditioner on and off. The
A/C symbol will light on your display and air will come out of your
instrument panel vents. The fan will automatically be set on
LOW .
When you press the A/C button to turn the air conditioner off, the system
will operate in the vent mode. When you turn the air conditioner back
on,
the system will operate in the mode that you last selected unless the OFF
button was pressed.
MAX Button
If you press the MAX button, the air in your vehicle will be recirculated.
With the air conditioner on,
MAX will give you maximum cooling. It can
also be used
in all modes to help keep dust out of your vehicle. When MAX
is selected, REC will light on your display.
If your air conditioner develops high system pressure, it will automatically
go into the
MAX mode and REC will light on your display. The A/C
system will remain in the MAX mode, even if you press the MAX button,
until system pressure returns to a normal level.
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Fan Control Button
This button is in the upper right corner of your system control panel. The
fan has four settings
- low, medium low, medium high and high. Press the
top
of the button (+) to increase the air flow. Press the bottom of the button
(-) to decrease the air flow. The setting you select is shown on your display
as
LOW, MED LOW, MED HI or HI.
OFF Button
Press this button to turn the air conditioningheating system off. Pressing
OFF will erase the present mode of operation from the system’s \
memory,
Outside air will still come out of the heater outlet whenever the vehicle
is
moving forward.
If the OFF button was pressed, you must press A/C, MAX, or one of the
BLEND buttons for the system to come back on.
Rear Air Conditioning and Heating Systems (Wagon
Models)
If your vehicle has either or both of these systems, you can increase and
decrease the air flow at the rear vents. Depending
on the system you have
and the setting selected, you can send cooled
or heated air to the rear of the
vehicle.
Rear Air Conditioning (Without Rear Heater)
If your vehicle has rear air conditioning (without rear heater), the controls \
are located above the front and second seats.
The front and rear overhead
controls let
you increase and decrease the air flow at the rear vents.
Front Control Rear Control
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F
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