heater CHEVROLET SUBURBAN 1993 User Guide

Rear Window Defogger
K2112 J
You can tell if your vehicle has this option by looking at the rear window. If
you see lines running across the glass, you have it. These are the wires
which heat your window.
NOTICE
I Scraping the inside of your rear window could cut and damage the
defogger. Your warranty would not cover this damage. And don't put
decals there, you might have
to scrape them off. I
For best results, clear the window of as much snow or ice as possible first.
To turn on the rear window defogger, find the switch marked REAR DEFOG
on your instrument panel, just below the heater system. Press \
the right side
of the switch, with the defog symbol on it, until the light in the switch comes
on, then release
it. The rear window defogger will only work if the ignition
switch
is turned to RUN.
You can turn the defogger off at any time by pressing the left, lighted side of
the switch. The defogger will shut itself
off after several minutes, so that the
glass does not get too hot.
If the defogger shuts off, and the window still
isn't clear, turn the defogger on again.
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Your Driving and the Road
AN480044
Run your engine only as long as you must. This saves fuel. When you run
the engine, make
it go a little faster than just idle. That is, push the
accelerator slightly. This uses
less fuel for the heat that you get and it keeps
the battery charged.
You will need a well-charged battery to restart the
vehicle, and possibly
for signaling later on with your headlights. Let the heater
run for awhile. Then,
shut the engine off and close the window almost all the
way to preserve the heat. Start the engine again and repeat this only when
you feel really uncomfortable from the cold. But do it as little as possible.
Preserve the fuel as long as you can. To help keep warm, you can get out
of the vehicle and do some fairly vigorous exercises every half hour or so
until help comes.
If You’re Stuck in Deep Snow
This manual explains how to get the vehicle out of deep snow without
damaging it. See “Rocking Your Vehicle” in the Index.
Towing a mailer
I A If you don’t use the correct equipment and drive properly, you can
lose control when
you pull a trailer. For example, if the trailer is too
heavy, the brakes may not work well-or even at all. You and your
passengers could be seriously injured. Pull a trailer only
if you have
followed all the steps in this section.
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If No Steam Is Coming From Your C gine:
If you get the overheat warning but see or hear no steam, the problem may
not be too serious. Sometimes the engine can get a little too hot when you:
Climb a long hill on a hot day.
Stop after high speed driving.
Idle for long periods in traffic.
Tow a trailer.
If you get the overheat warning with no sign of steam, try this for a minute
or so:
1. If you have an air conditioner, turn it off.
2. Turn on your heater to full hot at the highest fan speed and open the
3. If you’re in a traffic jam, shift to N (Neutral).
window
as necessary.
If you no longer have the overheat warning, you can drive. Just to be safe,
drive slower for about ten minutes.
If the warning doesn’t come back on, you
can drive normally.
If the warning continues, pull over, stop, and park your vehicle right away.
If there’s still no sign of steam, push the accelerator until the engine speed is
about twice as fast as normal idle speed. Bring the engine speed back to
normal idle speed after two or three minutes.
Now see if the warning stops.
But then,
if you still have the warning, TURN OFF THE ENGINE AND GET
EVERYONE
OUT OF THE VEHICLE until it cools down.
You may decide not
to lift the hood but to get service help right away.
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The coolant level should be at or above COLD. If it isn’t, you may have a
leak in the radiator hoses, heater hoses, radiator, water pump or somewhere
else in the cooling system.
CAUTION
A
Heater and radiator hoses, and other engine parts, can be very\
hot.
Don’t touch them. If you
do, you can be burned.
Don’t run the engine
if there is a leak. If you run the engine, 1‘ it coulc
lose all coolant. That could cause an engine fire, and you could
be
I burned. Get any leak fixed before you drive the vehicle.
I
If there seems to be no leak, check to see if the electric engine fan (if you
have one) is running. If the engine is overheating, the fan \
should be running.
If
it isn’t, your vehicle needs service.
Start the engine again to see
if the regular fan runs when the engine does.
If
it doesn’t, your vehicle needs service. Turn off the engine.
How to Add Coolant to the Coolant Recovery Tank
If you haven’t found a problem yet, but the coolant level \
isn’t at or above
COLD, add a 50150 mixture of clean water (preferably distilled) and a proper
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antifreeze at the coolant recovery tank. (See “Coolant” i\
n the Index for more information about the proper coolant mix.)
Adding only plain water to your cooling system can be dangerou\
s. Plain water,
or some other liquid like alcohol, can boil before the
proper coolant mix will. Your vehicle’s coolant warning system is set
for the proper coolant mix. With plain water
or the wrong mix, your
engine
could get too hot but you wouldn’t get the overheat warning.
Your engine could catch fire and you or others could be burned. Use
a 50150 mix of clean water and a proper antifreeze. I I
NOTICE I
In cold weather, water can freeze and crack the engine. radiator, heater
I core and other parts. Use the recommended coolant.
1
1 ::.
L.
k’
II
PO206
CAUTION
- = -
You can be burned if you spill coolant on hot engine parts. Coolant
contains ethylene glycol
and it will burn if the engine parts are hot
enough. Don’t spill coolant on
a hot engine.
When the coolant in the coolant recovery
is at or above COLD, start your
vehicle.
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Service & Appearance Care
oil. If time determines when you change your oil, change the filter ea\
ch time
you change your oil.
Engine Block Heater:
An engine block heater can be a big help if you have to park outside in very
cold weather,
0°F (-18°C) or colder. If your vehicle has this option, see
“Engine Block Heater” in the Index.
What to Do with Used Oil:
Used engine oil contains things that have caused skin cancer in
laboratory animals. Don’t let
used oil stay on your skin for very long.
Clean
your skin and nails with soap and water, or a good hand ,,:: :‘:-;
cleaner. Wash or properly throw away clothing or rags containing-:’-:;$ ~
used engine oil.
. ,A:<< --.
L. .. . .. ,-. f .- , L ., -J ’,: ._ - -
..:.: ;,i, j I -.. : j ,!
Used oil can be a real threat to the environment. If YOU change your own oil,
be sure to drain all free-flowing oil from the filter before disposal. Don’t ever
dispose of oil by putting it in the trash, pouring it on the ground, into sewers,
or into streams or bodies of water. Instead, recycle it by taking it to a place
that collects used oil. If you have a problem properly disposing of your used
oil, ask your dealer, a service station or a local recycling center for help.
Air Cleaner
c
PO21 6
Refer to the Maintenance Schedule to determine when to replace the air
cleaner filter and crankcase ventilation filter. See “Schedule\
d Maintenance Services” in the Index.
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Service & Appearance Care
The following explains your cooling system and how to add cool\
ant when it is
low.
If you have a problem with engine overheating, see “Engine
Overheating” in the Index.
The proper coolant for your vehicle
will:
Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 258°F (125°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they should.
What to Use:
Use a mixture of clean water (preferably distilled), and antifreeze that meets
“GM Specification
6038-M,” which won’t damage aluminum parts. Also use
GM Engine Coolant Supplement (sealer) with a complete coolant change.
If
you use these, you don’t need to add anything else.
Adding only plain water to your cooling system can be dangerous.
I
Plain water, or some other liquid like alcohol, can boil before the \
proper coolant mix will. Your vehicle’s coolant warning system is set
for the proper coolant mix. With plain water or the wrong mix, your
engine could get too hot but you wouldn’t get the overheat \
warning. Your engine could catch fire and you or others could be burned. Us\
e
a 50/50 mix of clean water and a proper antifreeze.
jIi ,yo.w use an improper coolant mix, your engine .coutd overheat andi
badly damaged. The repair cost wouldn’t be covered by your warranty.’ TP~
much water in ;the mix can freeze and crack the engine, radiator, .heater
wre-ad -.other parts.
Some conditions, such as air trapped in the cooling system, can affect the
coolant level in the radiator. Check the coolant level when th\
e engine is cold
and follow the steps under “Adding Coolant” for the prope\
r way to
add
coolant.
.. .. ..
If you have to add coolant mdre than four times a year, have your dealer
check
your cooling system.
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Service & Appearance Care
Light Bulb Data
Lamp or Bulb
6052
Headlamps: 2 Headlamp System
Exterior Liqhts:
Trade No.
Haloaen (Opt.) H6054
Headlamps: 4 Headlamp System
9005
(Composite) 9006
Interior Lights:
Dome Lamps 21
1-2
I Readina Lamps I 211-2
Roof Console Lamps
1 94
Instrument Panel Compartment Lamp 1
94
Four Wheel Drive Shift Lever 161
Four Wheel Drive Indicator 194
, Heater or
NC Control Lamp 1003
, Courtesy Lamp
168
1 Ashtray Lamp I 194
Malfunction Indicator (“Service Engine
-
Soon”)
*Suburban only tCanadian Vehicles only
74
Upshift Indicator 74
Power Rating
55/65 121
35/65
2
65
2
1 Candle Power
,,.,I
32-2
11
10
12 2
XI
TO293
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Skidding ..................................... 4-23
Stuck
in Deep Snow .... 4-56, 5-31
Through Water
............... 2-1 5, 4-34
Uphill
.......................................... 4-28
Winter
........................................ 4-53
With a Trailer
............................ 4-60
Drunken Driving
........................... 4-1 0
E
Electrical System ......................... 6-37
Add-on Equipment
................... 6-67
Engine
Adding Coolant
... 5-1 1, 5-13, 6-27
Air Cleaner
................................ 6-1 6
Block Heater
.......... 2-16, 3-5, 6-16
Computer Command Control
System
..................................... 6-45
Coolant
............................ 6-25, 6-68
Coolant Temperature Gage
...... 2-77
Cooling System
......................... 5-10
Crankcase .................................. 6-69
Exhaust
..................................... 2-28
Fan Noise
.................................. 5-1 6
Identification
................... 6-65, 6-68
Leaving Vehicle While Running
....................... 2-26
Oil (See
“Oil”)
Overheating ................................. 5-8
Running While Parked
............. 2-29
Starting
...................................... 2-1 4
Equipment, Add-on
...................... 6-48
Exhaust System
........................... 6-45
F
Fan Noise ...................................... 5-1 6
Filter Replacement Chart
............ 6-69
Finish
Care
............................................ 6-61
Damage
..................................... 6-62
Automatic Transmission
........... 6-17
Brake
.......................................... 6-32
Fluid Capacities
.................................. 6-68
Coolant
....................................... 5-11
Front Axle ................................. 6-24
Hydraulic
Clutch ....................... 6-21
Leak Check
............................... 6-35
Manual Transmission
............... 6-20
Power Steering
......................... 6-29
Radiator
..................................... 5-13
Rear Axle
.................................. 6-24
Recommended Fluids
.............. 7-25
Transfer Case
............................ 6-23
Windshield Washer
........ 2-40, 6-31
Four-wheel Drive
............... 2-30, 6-23
Transfer Case
................. 2-30, 6-23
Front Axle
..................................... 6-24
Fuel
.................................................. 6-4
Filling Your Tank
......................... 6-6
Foreign Countries
....................... 6-6
Gage
.......................................... 2-76
Gasolines
for Cleaner Air ......... 6-5
Tank Capacity
........................... 6-69
Fuses and Circuit Breakers
.......... 6-43
Fuse Block
................................ 6-44
Headlights
................................. 6-43
Power Windows and
Other Power Options
........... 6-44
Trailer Wiring Harness
............. 6-44
Windshield Wipers
................... 6-44
G
Gages .................................. 2-66, 2-76
Coolant Temperature Gage
..... 2-77
Fuel Gage
.................................. 2-76
Odometer
................................... 2-66
Oil Pressure Gage
.................... 2-78
Speedometer
............................. 2-66
Tachometer
................................ 2-67
Trip Odometer
........................... 2-67
Voltmeter
................. ................. 2-79
Glove Box
..................................... 2-56
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