1998 CHEVROLET ASTRO heater

Downloaded from www.Manualslib.com manuals search engine Your vehicle has air vents near the center and on the
sides of the instrument panel that allow you to adjust the
direction and the amount of airflow inside the vehicle.
Move the dial on the vent up or down to direct airflow
to your preference. Increase or reduce the amount of
airflow by opening and closing the louvers. The vents
rotate to direct the airflow from side to side.
When you close a vent, it will increase the flow of air
coming out of any vents that are open. If you
have rear heating or rear air conditioning, you
will have adjustable vents in the rear of the vehicle to
help direct the airflow. The rear air conditioning vents are located in the headliner at the rear
of the vehicle.
The rear heating vents are located next to the second
and third seat
on the driver’s side of the vehicle, near the
floor.
You can move the vents to direct the flow of air,
or close the vents altogether. When you close a vent, it
will increase the flow of air coming out of any vents that
are open.
Ventilation Tips
e
e
a
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.
When you enter a vehicle in cold weather, turn the
blower fan to HIGH for
a few moments before
driving off.
This helps clear the intake ducts of snow
and moisture, and reduces 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.
3-7

Downloaded from www.Manualslib.com manuals search engine Rear Window Defogger (Option)
If your vehicle has this option, the rear window will
have lines running across the glass.
These lines heat
your window.
For best results, clear the window of
as much snow or
ice as possible before using the rear window defogger.
To turn on the rear window
defogger, find the button to
the left of the heater
controls with
the defog
symbol on it.
Press
the button until the light comes on, then release it.
The rear window defogger will only work when the
ignition switch is in the
RUN position.
You
can turn the defogger off at any time by pressing
the button again. The defogger will shut itself off after
several minutes
so that the glass does not get too hot. If
the window
still isn’t clear, turn the defogger on again.
Do not attach a temporary vehicle license, tape or decals
across the defogger grid
on the rear window.
1 NOTICE: 1
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 defogger and the repairs
would not be covered by your warranty.
3-8

Downloaded from www.Manualslib.com manuals search engine 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.
Sr Y can trap exha. ler your vehicle.
~ This can cause deadly 60 (carbon monoxide) gas
to get inside. CO could overcome you and kill
you.
You can’t see it or smell it, so you might not
know
it is in your vehicle. Clear away snow from
around the base of your vehicle, especially any
~ that is blocking your exhaust pipe. And check
around again from time to time to be sure snow
doesn’t collect there.
Open a window just
a little on the side of the
vehicle that’s
away from the wind. This will help
~ keep CO out.
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 headlamps. Let
the heater run for a while.
You can run the engine to keep warm, but be careful.
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Downloaded from www.Manualslib.com manuals search engine 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.
0 Tow a trailer. See “Driving on Grades” in the Index.
If
you get the overheat warning with no sign of steam,
try this for a minute or
so:
I. 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 NEUTRAL (N);
otherwise, shift to the highest gear while
driving
-- DRIVE (D).
If you no longer have the overheat warning, you
can drive. Just
to be safe, drive slower for about
10 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 ofs
the engine nncl 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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Downloaded from www.Manualslib.com manuals search engine 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. 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 the
ADD 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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Downloaded from www.Manualslib.com manuals search engine [6h, CAUTION:
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, it could lose all coolant. That could
cause an engine fire, and you could be burned.
Get any leak fixed before you drive the vehicle.
I NOTICE: I
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 engine cooling 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 the
ADD mark, add a 50/50 mixture of
clean water (preferably distilled) and DEX-COOL@
engine coolant at the coolant recovery tank. (See
“Engine Coolant” in the Index for more information.)
A CAUTION:
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 mixture will. Your vehicle’s coolant
warning system is set for the proper coolant
mixture. With plain water or the wrong mixture,
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 mixture of clean water and
DEX-COOL@ coolant.
5-16

Downloaded from www.Manualslib.com manuals search engine NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other parts. Use the recommended coolant and the proper
coolant mixture. You
can be burned if you sl I 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 tank is at the
ADD mark, start your vehicle.
If the overheat warning continues, there’s one more
thing
you can try. You can add the proper coolant
mixture directly
to the radiator, but be sure the cooling
system is
cool before you do it.
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Downloaded from www.Manualslib.com manuals search engine 6. Grasp the top of the heater duct and pull down gently
to remove it. 7. Remove the two bolts at the engine cover. The bolts
are not supposed to come out of the cover, only from
the front of the dash.
When removing the cover, be careful not
to damage
the instrument panel or the trim.
8. Disconnect the AM radio ground strap.
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