1993 Oldsmobile Cutlass Supreme cooling

~ Comfort Controls &Audio Systems
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Climate Control
The air conditioner and heater work
best
if you keep your windows closed
while using them. Your vehicle also has
the flow-through ventilation system
described later in this section.
OFF: Press to turn the blower off.
Some air will still come from the outlets
at the floor. Press any function button
to turn the system
on.
Temperature Control Lever: This
lever changes the temperature of the air
coming through the system. The higher
the lever setting, the warmer the air.
3f: Selects the force of air you want.
Press
LO to lower the fan speed, HI to
raise
it.
Air Conditioning
On very hot days, open the windows
long enough to let hot inside air escape.
This reduces the time it tales for your
vehicle to cool down, which should help
fuel economy.
There are three air conditioning
settings:
MAX: Provides maximum cooling or
quick cool-down
on very hot days. This
setting also helps prevent outside odors
from entering your vehicle.
This setting recirculates much of the air
inside your vehicle, and it should not be
used for long periods because the air
may become too cold and
dry. This
setting is not recommended if an
occupant is smoking.
NORM: Use for normal cooling on hot
days. This setting brings in outside air,
cools it and directs it through the
instrument panel outlets.
BI-LEV (Bi-Level): Use on cool, but
sunny days. This setting brings in the
outside air, but directs it in two ways.
The cool air is directed to the upper
portion of your body through the
instrument panel outlets, but most
warmed air is directed through the
heater ducts and a little to the defrost
and side window vents. At times this
temperature difference may be more
apparent than others.

Heating and Venfilafion
When you don’t need to cool the outside
air, use these next settings.
You can
leave the air as it is or heat it.
The air conditioner compressor doesn’t
run in these settings. This reduces the
engine load, resulting in improved fuel
economy (gas mileage)
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VENT: For mild outside temperatures,
when little heating or cooling is needed,
push
VENT. Air flow is through the
instrument panel outlets. Slide the
temperature control lever to a
comfortable level.
HEAT: When outside temperatures are
cold, push
HEAT. Slide the temper-
ature control lever to a comfortable
level. For maximum heating, slide it all
the way to the right.
This setting will send most of the heated
air through the ducts near the floor. The
rest will come out of the defroster vents
and side window defogger vents.
Defogging and Defrosting
There are two settings for clearing your
windows. For each setting, adjust the
temperature control
as desired. The air
conditioner compressor will run in
these settings to remove moisture from
the air when the temperature
is above
freezing.
tv th This setting allows half of
e air to flow to the floor
heater ducts, and half to
go to the windshield and
side window vents located
in the windshield pillars.
Use this setting to warm
passengers while keeping
the windshield clear. The
DEF setting directs 90% of
the air
through the defroster vents and the side
window vents, and
10% to the floor.
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Comfort Controk &Audio Systems
Steering Wheel Touch Controls
for Climate Control
(OPTION)
Some heating and cooling controls can
be adjusted at the steering wheel. These
touch controls also operate some audio
controls. See the
Index under Steering
Wheel
Touch Controls for Audio
System.
FAN: Press the upper part of the
control to increase the fan speed; press
the lower part to reduce the fan speed.
TEMP: Press the upper part of the
control to raise the inside temperature
setting; press the lower part to lower
the setting.
MODE: This control can be used to
select the direction of air flow
(BI-LEV, UPPER, or LOWER
settings), or to select DEFOG,
DEF
(Defrost) or AUTO. Press the top
of the control to move to the next mode
on the right of the climate control
panel. Press the bottom
of the control
to move to the next mode on the left.
The indicator light will glow above the
selected mode, or
AUTO will appear on
the digital display.
Rear Window Defogger (OPTION)
R DEFOG: Press to warm the
defogger grid on the rear window. The
indicator light will glow while the rear
window defogger is operating. The rear
window defogger will turn off
automatically after about
10 minutes of
use. If you turn it on again, the defogger
will operate for about five minutes only.
You can also turn the defogger off by
turning off the ignition or pressing the
R DEFOG switch again.
Do not attach a temporary vehicle
license across the defogger grid
on the
rear window.

Your Driving and the Road
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Hill and Mountain Roads
Driving on steep hills or mountains is
different from driving in flat or rolling
terrain.
If you drive regularly in steep
country, or if you’re planning to visit
there, here are some tips that can make
brakes, tires, cooling system and
transaxle. These parts can work hard
on mountain roads.
Know how to go down hills. The most
important thing to laow is this: let
your engine
do some of the slowing
down. Don’t make your brakes do it
all. Shift to a lower gear when you go
down a steep or long hill. That way,
you will slow down without excessive
your
trips safer and more enjoyable.
Keep your vehicle in good shape.
Check all fluid levels and also the
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Coasting downhill in N
(Neutral) or with the ignition
off is dangerous. Your brakes will
have to do all the work of slowing
down. They could get
so hot that
they wouldn’t work well. You could
crash. Always have your engine
running and your vehicle in gear
when you go downhill.
use of your brakes.
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Know how to go uphill. You may
want to shift down to a lower gear.
The lower gears help cool your engine
and transaxle, and you can climb the
hill better.
Stay in your own lane when driving
on two-lane roads in hills or
mountains. Don’t swing wide or cut
across the center
of the road. Drive at
speeds that let you stay in your own
lane. That way, you won’t be
surprised by a vehicle coming toward
It takes longer to pass another vehicle
when you’re going uphill. You’ll want
to leave extra room to pass.
If a
I you in the same lane.
vehicle is passing you and doesn’t
have enough room, slow down to
make it easier for the other vehicle to
get by.

Your Driving and the Road
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If You Do Decide to Pull a Trailer
(CONT.)
Then, during the first 500 miles
(800 km) that you tow a trailer, don’t
drive over
50 mph (80 lun/h) and
don’t make starts
at full throttle. This
helps your engine and other parts of
your vehicle wear in at the heavier
loads.
Three important considerations have
to do with weight:
Weight of the Trailer
How heavy can a trailer safely be? It
should never weigh more than 1,000
pounds
(450 kg), unless you have a
3.1L
V6 with the heavy-duty cooling
package. Then your vehicle can tow
up to
2,000 pounds (900 kg). But
even that can
be too heavy. It depends
on how you plan to use your rig. For
example, speed, altitude, road grades,
outside temperature and how much
your vehicle is used to pull a trailer
are all important. And, it can also
depend on any special equipment that
you have on your vehicle. You can ask
your dealer for our trailering
information or advice, or you can
write us at: Oldsmobile Customer Assistance
P.O. Box 30095
Lansing, MI 48909
In Canada, write to:
Network
General Motors of Canada Limited
Customer Assistance Center
1908 Colonel Sam Drive
Oshawa, Ontario, L1H 8P7

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
(C) Electric engine fan
If the coolant inside the coolant
recovery tank is boiling, don’t do
anything else until it cools down. The
coolant level should be at or above
the
COLD 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.
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CAUTION I
Heater and radiator hoses,
and other engine parts, can
1;, ;cry 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, it could
lose all coolant. That could cause
an engine fire, and you could be
burned. Get any leak fixed before
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you drive the vehicle.
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If there seems to be no leak, check to
see
if the electric engine fan is running.
If the engine is overheating, the fan
should be running.
If it isn’t, your
vehicle needs service.
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
50/50 mixture of clean
water (preferably distilled) and a proper
antifreeze at the coolant recovery
tank.
(See the Index under Engine Coolant
for more information abaut the proper
coolant
mix.)
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Problems on the Road
Adding only plain water to
your cooling system can be
dangerous. 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
50/50 mix of clean
water and a proper antifreeze.
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You can be burned if you
spill coolant on hot engine
-I.& Coolant contains ethylene
pdrts are hot enough. Don't spill
ycol
and it will burn if the engine
I I coolant on a hot engine.
When the coolant
in the coolant
recovery tank is at or above
COLD,
start your vehicle.
If the overheat
warning continues,
there's one more
thing you can try. You
can add the proper coolant mix directly
to the radiator, but be sure the cooling
system
is cool before you do it.
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can blow out and burn you badly.
They are under pressure, and
if you
turn the radiator pressure cap-
even a little-they can come out at
high speed. Never turn the cap
when the cooling system, including
the radiator pressure cap, is hot.
Wait for the cooling system and
radiator pressure cap to cool
if you
ever have to turn the pressure cap.
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How to Add Coolant to the Radiator: 1. You can remove the radiator pressure
cap when the cooling system,
including the radiator pressure cap.
and upper radiator hose, is no longer
hot. Turn the pressure cap slowly to
the left until it first stops. (Don’t
press down while turning the
pressure cap.)
If you hear
a.hiss, wait for that to stop.
A hiss means there is still some
pressure left.
2. Then keep turning the pressure cap,
but now push down
as you turn it.
Remove the pressure
cap.
You can be burned if you
spill coolant on hot engine
,&s. Coolant contains ethylene
glycol and it will burn
if the engine
~ I parts are hot enough. Don’t spill
coolant on
a hot --~ 3ine.
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