cooling OLDSMOBILE AURORA 1995 Owners Manual

Air Conditioning
The air conditioner cools, dehumidifies, and filters the
air for the inside of the vehicle.
The air conditioner compressor
is enabled in all modes.
However, when the outside temperature is below
42" F
(6"C), the compressor will not operate. When the air
conditioner is on, you may sometimes notice slight
changes
in your vehicle's engine speed and power. This
is normal, because the system is designed to cycle the
compressor
on and off to keep the desired cooling and
help fuel economy.
The air conditioning is always enabled
in defog or
defrost. In any other mode,
you can select or shut off the
air conditioning as desired by pressing
A/C ON. The
indicator light will glow while the air conditioning is
enabled. For maximum
continued cooling, press the blue
temperature button repeatedly until the display reads
60" F (16°C) and press the A/C ON button. Using the
upper vents will cause
you to feel cooler more quickly.
The direction of
the cool air can be controlled by
adjusting, or turning off, the outlets in the dash. Aiming
them over your shoulder will benefit both front and rear
passengers. Back seat passengers can also redirect air
flow using the vents at the rear
of the center console.
On hot days, open the windows long enough to let the
hot inside air out. This reduces the time the air
conditioner's compressor will have to run, which should
help fuel economy.
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Extended Idling with Automatic Electronic Climate Control
Extended idling is not recommended. See “Engine
Exhaust’’
in the Index.
Steering Wheel Touch Controls for Climate Control
Some heating and
cooling controls can be
adjusted at
the steering
wheel. Other touch
controls also operate some audio controls.
See “Steering Wheel
Touch Controls for
Audio System” later
in
this section. Press
the upper part
of the fan symbol to increase the fan
speed; press the lower part of the control to reduce the
fan speed.
Press
TEMP once to display the set temperature. Then press
the upper part of the control to raise the inside temperature \
setting; press the lower part to lower the setting.
Flow-Through Ventilation System
Your Aurora’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.
Keep the air path under the front seats clear of
objects. This helps air
to circulate throughout your
vehicle.
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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
your trips safer and more enjoyable.
Keep your vehicle in good shape. Check all fluid
levels and
also the brakes, tire.s, cooling system and
transaxle. These parts can work hard on mountain
roads.
Know how to go down hills. The most important
thing to know
is this: let your engine do some of the
slowing down. Shift to
a lower gear when you go
down a steep or long hill.
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Parking on Hills
You really should not park your vehicle, with a trailer
attached,
on a hill. If something goes wrong, your rig
could start
to move. People can be injured, and both
your vehicle and
the trailer can be damaged.
But if you ever have to park your rig on a hill, here‘s
how to do it:
1.
2.
3.
4.
5.
Apply your regular brakes, but don’t shift into
PARK (P) yet.
Have someone place chocks under the trailer wheels.
When the wheel chocks are in place, release the
regular brakes
until the chocks absorb the load.
Reapply the regular brakes. Then apply your parking
brake, and
then shift to PARK (P).
Release the regular brakes.
When You Are Ready to Leave After
Parking on a Hill
I. Apply your regular brakes and hold the pedal down
while you:
Start your engine:
Shift into a gear; and
Release the parking brake.
2. Let LIP on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you’re
pulling
a trailer. See the Maintenance Schedule for more
on this. Things that are especially important
in trailer
operation are automatic transaxle fluid (don’t overfill),
engine oil, belt, cooling system, and brake adjustment.
Each of these
is covered in this manual, and ;he Index will
help you find them quickly. If you’re trailering, it‘s a good
idea to review these sections before you stat your trip.
Check periodically
to see that all hitch nuts and bolts
are tight.
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Cooling System
If the coolant inside the coolant surge tank is boiling.
don’t do anything else
until it cools down.
When
you decide it’s safe to lift the hood, here’s what
you’ll see:
A. Coolant surge tank with pressure cap
B. Two electric engine fans
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The coolant level
should be at or above
FULL COLD. If it
isn’t and the LOW
ENGINE COOLANT
message appears on
the Driver Inforn~ation
Center, you may have
a leak
in the radiator
hoses, heater hoses,
radiator, water
pump
or somewhere else in
the cooling system.
I NOTICE:
Engine damage if you keep running your engine
without coolant isn’t covered by your warranty.
See “Overheated Engine Protection Operating
Mode” in the Index.
I
If there seems to be no leak, with the engine on, check to
see if the electric engine fan(sj are running. If the engine
is overheating, both fan(sj should be running. If they
aren’t, your vehicle needs service.
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How to Add Coolant to the Coolant Surge
Tank
If you haven't found a problem yet. but the coolant level
isn't at FULL COLD. add a SO/SO mixture of clecrn
c1*trreI- (preferably distilled) and a proper antifreeze at the
coolant surge tank, but be
SLIE the cooling system.
including the coolant surge tank pressure
cap, is cool
before
you do it. (See "Engine Coolant" in the Index for
more information about the proper coolant mix.)
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. .. I
1 . You can remove
the coolant surge
tank pressure cap
when the cooling
system, including
the coolant surge
tank pressure cap
and upper
r' d d' lator
hose, is no longer
hot.
Turn the pressure cap slowly about one-quarter
turn to
the left and then stop.
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
slowly, and remove
it.
3. Fill the coolant
surge tank
with the
proper
mix, up to
FULL COLD.
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Engine Coolant
The following explains your cooling system and how to
add coolant when
it is low. If you have a problem with
engine overheating, see “Engine Overheating” in the
Index.
The proper coolant for your Aurora will:
0 Give freezing protection down to -34°F (-37°C)
0 Give boiling protection up to 262°F (128°C).
0 Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning lights work as they should.
What to Use
Use a mixture of one-half c.lt.crr~ wwtor (preferably
distilled) and one-half antifreeze that meets “GM
Specification 182S-M,” which won‘t damage aluminum
parts.
You call also use a recycled coolant conforming to
GM Specification 1825-M
with a complete coolant tlush
and refill. Use GM Engine Coolant Supplement (sealer)
with any cotnplete coolant flush and refill. If you use
this mixture, you don‘t need to add anything else.
A
special procedure is required for adding sealer; see the
ALI~o~~ Service Manual. (To order a service 1nanual. see
”Service Publications“
in the Index.)
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Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted
or corroded. If wheel nuts keep coming loose, the wheel,
wheel bolts, and wheel nuts should be replaced.
If the
wheel leaks air, replace it (except some aluminum
wheels, which can sometimes
be repaired). See your
Aurora retailer if any
of these conditions exist.
Your retailer will know the kind
of wheel you need.
Each new wheel should have the same load carrying
capacity, diameter, width, offset, and be mounted the
same way as the one it replaces.
If you need
to replace any of your wheels, wheel bolts,
or wheel nuts, replace them only with new
GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts, and wheel nuts for your Aurora
model.
I NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling,
speedometer/odometer calibration, headlamp aim, bumper height, vehicle ground clearance,
and tire
or tire chain clearance to the body and
chassis.
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