heater OLDSMOBILE BRAVADA 1994 Owners Manual

Engine Coolant Heater (Engine
Block Heater)
(OPTION)
In very cold weather, 0°F (-18°C) or
colder, the engine coolant heater can
help.
You’ll get easier starting and
better fuel economy during engine
warm-up. Usually, the coolant heater
should be plugged in a minimum of four
hours prior to starting your vehicle.
To use the coolant heater:
1. Turn off the engine.
2. Open the hood and unwrap the
3. Plug it into a normal, grounded 110-
electrical cord.
volt outlet.
NOTICE:
After you’ve used the coolant
heater, be sure to store the cord as
it was before to keep it away from
moving engine parts. If you don’t, it
could be damaged. How long
should you keep the coolant
warmer plugged in? The answer
depends on the weather, the kind of oil
you have, and some other things.
Instead of trying to list everything here,
we ask that you contact an Oldsmobile
dealer
in the area where you’ll be
parking your vehicle. The dealer can
give you the best advice for that
particular area. I
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Comfort Cont'rok &Audio Systems
LO HI
Climate Control System
Your vehicle's heater and air
conditioner work best
if you keep your
windows closed. Your vehicle also has
flow-through ventilation, described later
in this section, to bring outside air into
your vehicle.
3f Fan Lever: The lever at the top has
four positions. Move it toward
HI to
increase the air flow. To decrease the
air flow, move it toward
LO.
Temperature Lever: Slide the lever on
the left to control the temperature of the
air flow into the vehicle. Move the lever
up for warmer air, down for cooler air.
Function Lever: Slide the lever on the
right to select the function desired. The
air conditioner compressor will operate
in all settings except
VENT and HTR
(Heater) when the outside temperature
is above freezing. When the air
conditioner compressor cycles
on, you
may sometimes notice slight changes in
your vehicle's engine performance and
power. This is normal, because the
system is designed to keep the desired
cooling level and help fuel economy. There are
three air conditioning
settings:
MAX A/C, NORM A/C, and
BI-LEV A/C. On very hot days, your
vehicle will cool down more quickly and
economically in any of these settings
if
you open the windows long enough to
let hot inside air escape. For all settings,
adjust the temperature control lever and
fan speed as desired.
MAX A/C: Select this setting to get
maximum cooling or quick cool-down
on very hot days. This setting
recirculates much of the air inside your
vehicle. It should not be used for long
periods
of time because the air may
become too cold and dry.
Also slide the temperature control lever
down to the coolest setting and adjust
the fan speed as desired.
NORM A/C: Use this setting for
normal cooling on hot days. This setting
cools outside air and directs it through
the instrument panel outlets.
BI-LEV A/C: Use on cool but sunny
days. This setting brings in outside air,
but directs it two ways-through the
instrument panel outlets and the heater
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ducts at your feet. At times this
temperature difference may be more
apparent than others.
VENT: The vent setting brings in
outside air through the instrument
panel outlets and at your front side
windows.
HTR The heater setting brings in most
heated air through the heater ducts, and
some through the defroster vents.
If you have the optional engine coolant
heater and use it during cold weather,
20°F (-8°C) or lower, your heating
system will more quickly provide heat
because the engine coolant is already
warmed. See the
Index under Engine
Coolant Heater.
most of the warmed air to the
windshield and side windows. Some
will also
go to the floor vents.
The air conditioner will also run in this
setting to remove moisture from the air
when the temperature is above
40°F
(4°C). Adjust the temperature control
as desired.
(Defrost): This setting directs
Defogging and Defrosting
To rapidly defrost the windshield, slide
the temperature control lever all the
way up and select the
(j@ setting.
Adjust the fan to the highest speed.
To rapidly defog the side windows,
select the
BI-LEV AfC setting and
adjust the fan to the highest speed. Aim
the side vents toward the side windows.
For increased air flow to the side vents,
close the center vents.
r
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Comfort Con&ols &Audio Systems
94
Rear Window Defogger
Press ON to warm the defogger grid on
:he rear window. The indicator light
will glow while the rear window
iefogger is operating. The defogger will
:urn off automatically after about
10
ninutes. If you turn it on again, the
iefogger will operate for about five
ninutes only.
You can turn the defogger
Iff by turning off the ignition or
?ressing
OFF.
Do not attach a temporary vehicle
.icense across the defogger grid on the
:ear window.
NOTICE:
Don't use a razor blade or
something else sharp on the inside
of the rear window. If you do, you
could cut or damage the warming
grid, and the repairs wouldn't be
covered by your warranty.
Flow-Through Ventilation System
Your vehicle's flow-through ventilation
system supplies outside air into the
vehicle when
it is moving. Outside air
will also enter the vehicle when the
heater
or the air conditioning fan is
running.
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.
weather, slide the function lever to
HTR and turn the blower fan to HI
for a few moments before driving off.
When you enter a vehicle in cold
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If You’re Caught in a Blizzard
If you are stopped by heavy snow, you
could be in a serious situation.
You
should probably stay with your vehicle
unless you know for sure that you are
near help and you can hike through the
snow. Here are some things to do to
su~nmon help and keep yourself and
your passengers safe: Turn on your
hazard flashers. Tie a red cloth to your
vehicle to alert police that you’ve been
stopped by the snow. Put on extra
clothing or wrap a blanket around you.
If
you have no blankets or extra clothing,
make body insulators from newspapers,
burlap bags, rags, floor mats
- anything
you can wrap around yourself or tuck
under
your clothing to keep warm.
You can run the engine to keep warm,
but be careful.
~ .--- . . .. . . .. ~ ~ ~, L
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.
3
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Problems on the Road
146
NOTICE:
If your engine catches fire because
you keep driving with no coolant,
your vehicle can be badly damaged.
The costly repairs would not be
covered by your warranty.
If No Steam Is Coming From Your
Engine
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. Turn off your air conditioner.
2. Turn on your heater to full hot at the
highest fan speed and open the
window as necessary.
3. If you’re in a traffic jam, shift to
N (Neutral). 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.
Cooling System
When you decide it’s safe to lift the
hood, here’s what you’ll see:
(A) Coolant recovery tank
(B) Radiator pressure cap
If the coolant inside the coolant
recovery tank is boiling, don’t do
anything else until it cools down.
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I
The coolant level should be at or above
the
FULL HOT mark. 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.
NOTICE:
Engine damage from running your
engine without coolant isn’t
covered by your warranty.
If there seems to be no leak, start the
engine again. See if the fan speed
increases when idle speed is doubled by
pushing the accelerator pedal down. 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 the
FULL HOT mark, add a 50/50 mixture
of
clean water (preferably distilled) and
a proper antifreeze at the coolant
recovery tank. (See
Engine Coolant in
the
Index for more information about
the proper coolant mix.)
I NOTICE: I
In cold weather, water can freeze
and crack the engine, radiator,
heater core and other parts. Use the
recommended coolant.
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Service & Appearance Care
1 70
NOTICE:
If you use oils that do not have
either the “starburst” symbol or an
API SH or SG designation, you can
cause engine damage not covered
by your warranty.
GM Goodwrench@ oil (in Canada, GM
Engine Oil) meets all the requirements
for your vehicle.
Engine Oil Additives
Don’t add anything to your oil. Your
Oldsmobile dealer is ready to advise
if
you think something should be added.
When to Change Engine Oil
See if any one of these is true for you:
Most trips are less than 4 miles (6
It’s below freezing outside and most
trips are less than
10 miles (16 km) .
The engine is at low speed most of the
time (as in door-to-door delivery, or in
stop-and-go traffic).
You tow a trailer often.
Most trips are through dusty places.
The vehicle is frequently operated off-
If any one of these is true for your
vehicle, then you need to change your
oil and filter every 3,000 miles (5 000
ltm) or 3 months - whichever comes
first.
lm) .
road.
Engine Coolant Heater (Engine Block Heater)
An engine coolant 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
Coolant Heater
in the Index.
What to Do with Used Oil
Did you laow that used engine oil
contains certain elements that may be
unhealthy for your skin and could even
cause cancer? 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. (See the manufacturer’s
warnings about the use and disposal of
oil products.)
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.
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Let the warning lights and gages work
What to Use
Use a mixture of one-half clean water
(preferably distilled) and one-half
antifreeze that meets
“GM Specification
6038-M,” which won’t damage
aluminum parts. If you use this mixture,
you don’t need
to add anything else.
as
they should.
NOTICE:
If you use an improper coolant mix,
your engine could overheat and be
badly damaged. The repair cost
wouldn’t be covered by your
warranty. Too much water in the
mix can freeze and crack the
engine, radiator, heater core and
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 the engine is cold
and follow the steps under
Adding
Coolant for the proper way to add
coolant.
If you have to add coolant more than
four times a year, have your dealer
check your cooling system.
NOTICE:
If you use the proper coolant, you
don’t have to add extra inhibitors
or additives which claim to improve
the system. These can be harmful.
~~
Adding Coolant
To Check Coolant
When your engine is cold, the coolant
level should be at
ADD, or a little
higher. When your engine is warm, the
level should be up to
FULL HOT, or a
little higher.
L
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INST LPS PWR ACC
HORNIDM IGNIGAU BRAKE STOPIHAZ
h TAIL LPS TURNIBU HTR A/C RADIO
%se Usage
Position
INST LPS
PWR ACC
HORN/DM
IGN/GAU BRAKE
STOP/HAZ
TAIL LPS
TURNDU HTR A/C RADIO
ECM B
ECM I
PWR WDO
WIPER
CRANK
TRAILER*
Rating
(AMP.)
5
30
20
20
15
15
20
15
25
15
15
10
30
25
3
30
UNDERHOOD':' 4
CD PLAYER 10
"In-line fuse.
Circuitry
Instrument Panel Lights, Headlight Warning Buzzer, Heater
Light, Ashtray Light, Radio Illumination Light, Rear Wiper
Switch Light
Power Door Locks, Rear Defogger, Console Accessory
Receptacles, CD Player
Horn, Dome Lights, Glove
Box Light, Clock, Lighter, Lighted
Vanity Mirror, Outside Rearview Mirror, Courtesy Lights
Indicator Lights and Gages, Rear Defogger Relay, Cruise
Control, Rear Defogger Switch, Seat Belt Timer
Four Wheel Anti-lock Brake Module, Digital Ratio Adapter
Module (Speedometer)
Stop Lights, Hazard Warning Lights, Chime Module, Center
High Mounted Stop Light (CHMSL)
Light Switch, TaiVPark Lights, Electronic Cluster, License Light
Turn Signals
& Back-up Lights
Heating and Air Conditioning
Radio, Inside Rearview Mirror Map Lights, Rear Wiper, Rear
Washer, Compass
Electronic Control Module, Fuel Pump
Electronic Control Module
Power Windows
Windshield Wipers and Washer
Electronic Control Module
Trailer Wiring Harness
Underhood Light
CD Player (attached to fuse block)
197
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