1994 CHEVROLET SUBURBAN heating

Table of Contents
Introduction - How to Use this Manual
This section tells you how to use your manual and includes safety
and vehicle damage warnings and symbols.
Section 1 - Seats and Safety Restraints
This section tells you how to use your seats and safety restraints
properly.
Section 2 - Features & Controls
This section explains how to start and operate your vehicle.
Section 3 - Comfort Controls & Audio Systems
This section tells you how to adjust the ventilation and comfort
controls and how to operate your audio system.
Section 4 - Your Driving and the Road
Here you’ll find helpful information and tips about the road and
how to drive under different conditions.
Section 5 - Problems on the Road
This section tells you what to do if you have a problem while
driving,
such as a flat tire or engine overheating.
Section 6 - Service & Appearance Care
Here the manual tells you how to keep your vehicle running
properly and looking good.
Section 7- Schedule Maintenance Services
This section tells you when to perform vehicle maintenance and
what fluids and lubricants to use,
Section 8 - Customer Assistance Information
This section tells you how to contact your GM division for
assistance and
how to get service publications. It also gives you
information on “Reporting Safety Defects” on page 8-4.
Index
Here’s an alphabetical listing of almost every subject in this
manual. You can use it
to quickly find something you want to read.
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For delay wiping, slide the lever under DELAY to the center of the rear
wiper control. The wiper will cycle every nine seconds.
For steady wiper action, move the slide lever all the way
to the right.
0 To wash the window, push in on the end of the lever. Window washer
fluid will continue
to spray until the lever is released. The wiper will
continue with three more wipes and then return to the setting that was
chosen before the lever was pushed.
The
rear window washer uses the same fluid bottle as the windshield
washer. If the fluid level
is low in the washer fluid bottle, you may not be
able to wash your rear window.
If you can wash your windshield, but not
your rear window, check the fluid level.
Cigarette Lighter/Ashtrays
The front ashtray is
located at the bottom
of the instrument
panel. Pull on the
bottom
of the ashtray
door to open
it.
TO use the cigarette lighter, push it in all the way, and let go. When it’s
ready,
it will pop back 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 overload,
damaging the lighter and the heating element.
To remove the front ashtray, pull on the front of the ashtray insert. Then
slide the insert out
of the ashtray door.
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Listed are four situations you may experience with your fuel gage:
0 At the gas station, the fuel pump shuts off before the gage reads full.
0 It takes a little more or less fuel to fill up than the fuel gage indicated.
For example, the gage may have indicated the tank was half full, but it
actually took a little more or less than half the tank’s capacity to fill the
tank.
0 The gage moves a little when you turn a corner or speed up.
0 The gage doesn’t go back to empty when you turn off the ignition.
None of these indicate a problem
with the fuel gage.
For information
on how to fill your fuel tank, see “Fuel - Filling Your
Tank”
in the Index.
For your fuel tank capacity, see “Fuel -Tank Capacity”
in the Index.
This gage shows the engine coolant temperature. If the gage pointer moves
into the red area, about
260°F (145°C) or more, your engine is too hot! It
means that your engine coolant has overheated.
If you have been operating
your vehicle under normal operating conditions, you should pull
off the
road, stop your vehicle, and turn off the engine as soon as possible.
Hot Coolant Can Burn You Badly!‘
In “Problems on the Road,” this manual shows what to do. See “Engine
Overheating” in the Index.
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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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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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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
e
F
t
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Rear Air Conditioning and Rear Heater
If your vehicle has a rear air conditioning and rear heater system
combination, controls are provided to regulate the temperature, location and
speed
of the air flow.
Front Control Rear Control
1
To adjust the air temperature, turn the temperature knob on the right side of
the control panel. For warmer air, turn the knob to the right (red) side, and
for cooler air, turn the knob to the left (blue) side.
To regulate the air flow location, adjust the center knob on the control panel.
Turn the knob toward the left for tloor vent air flow or toward the right for
headliner
vent air flow. Generally, the upper vents are used for air '
conditioning and the floor vents for heating: However, the control knob may
be set
to allow any desired blend of air flow.
To adjust the air flow speed, turn the fan control knob on the left side of the
control panel to the desired blower setting.
To activate the rear control, move the fan knob on the front control to
REAR CNTL. This will allow second seat passengers to adjust the controls
as they desire.
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