1998 GMC SAVANA air condition

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?# HEAT/DEFROST Use this setting to divide
airflow between the heater floor vents and windshield.
DEFROST This setting directs air through the
windshield defroster vents. This setting is useful when
you have fog or ice on the windshield.
Heater/Air Conditioning Controls
If your vehicle has air conditioning, your heatedair
conditioning controls will look like this.
Before using your vehicle’s air conditioning, open
the
windows to clear the vehicle of hot air.
Fan Knob
The knob on the left side of the heating system control
panel controls the fan speed. The knob has four speed
positions. To increase airflow, move the knob toward
HI. To decrease airflow, move it toward LO. To turn the
fan off, move the mode knob on
the far right to OFF.
Temperature Knob
The middle knob on the control panel lets you select the
relative temperature
of the air flowing into the passenger
area of your vehicle. This knob will allow
you to adjust
the relative air temperature independently of the
function knob setting. Move the knob toward the red
area for warmer air. Move the
knob toward the blue area
for cooler air.
Mode Knob
The right knob on the control panel changes the
heatedair conditioning setting.
MAX A/C: Move the right knob to MAX A/C for
maximum cooling. This setting puts the system in the
recirculation mode and helps to maximize your air
conditioner’s performance and your vehicle’s
fuel
economy. This setting also cools the air the fastest. After
the vehicle’s interior reaches a comfortable temperature,
move the knob to the right to place the air conditioning
system in the
A/C mode.
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A/C: Use for normal cooling on hot days. This setting
cools
outside air and directs it through the instrument
panel outlets.
’’ BI-LEVEL A/C: Use this setting to divide aifflow
between the heater floor vents and instrument panel
vents. The air conditioning compressor may operate in
this setting to cool the air.
*a
/.I VENT: This setting directs air through the
instrument panel vents.
+’ HEAT This setting directs air through the heater
floor vents. This setting is useful for cold weather.
+# HEATDEFROST: Use this setting to divide
airflow between the heater floor vents and windshield.
+a
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DEFROST: This setting directs air through the
windshield defroster vents. This setting is useful when
you have fog or ice on the windshield.
Rear Heater (Without Air Conditioning)
If you have a rear heater (without rear air conditioning),
the control switch
is located on the instrument panel.
To increase and decrease the flow of heated air to the
rear floor vents, move the switch marked
REAR HEAT
to the blower speed you want.
The knob has three speed positions. To increase the flow
of heated air, move the switch toward
HIGH. To turn the
fan off, move the switch
to OFF.
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Rear Air Conditioning and Rear Heater
If your vehicle has a rear air conditioning and rear heater
system combination, controls are provided
to regulate the
temperature, location and speed
of the airflow.
Front Passenger Control
To adjust the air temperature, turn the temperature knob
on the right side
of the control panel.
For warmer air, turn the knob toward the red area, and
for cooler air, turn the knob toward the blue area.
To regulate the airflow location, adjust the center knob
on the control panel. Turn the knob to the left for floor vent airflow
or to
the right for headliner vent air flow.
Generally, the upper vents are used
for air conditioning
and the floor vents for heating. The control knob can be
set to any blend setting.
To adjust the airflow speed, turn the fan control knob on
the left side of the control panel to the desired blower setting.
To activate the rear control, move the fan knob on the
front control
to REAR CNTL.
Rear Passenger Control
The rear control works just like the front control. It will
allow second seat passengers to adjust the controls as
they desire.
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Air Conditioning Heating
Before using your vehicle’s air conditioning, open the
windows to clear the vehicle
of hot air. This reduces the
time it takes for your vehicle to cool down. Then keep
your windows closed for the air conditioner to work at
its best.
You can use MAX
AIC with the temperature knob in the
blue area when it’s really hot outside and you need to
cool
the inside air quickly. MAX A/C lets in only a little
air from the outside.
If you first
use MAX A/C, you can then use A/C with
the temperature knob in the blue area, as soon as the
vehicle has cooled down,
so outside air will be going
through your vehicle.
If your vehicle has rear air conditioning, setting it on
LO
may enhance front A/C performance by allowing
trapped refrigerant in rear lines to circulate.
When the air conditioning,
DEFROST or BLEND is on,
you may notice a slight increase
or decrease in engine
speed, due to compressor operation. This
is normal
because the system
is designed to cycle the compressor
on and off to keep the desired temperature.
On cold days, use HEATER with the temperature knob
in the red area. Outside air will be brought in through
the floor outlets. The heater works best if you keep your
windows closed while using it.
If you use the optional engine coolant heater before
starting your engine, your heating system will produce
warmer air faster
to heat the passenger compartment in
cold weather. See “Engine Coolant Heater” in the Index.
Ventilation Tips
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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
HI 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.
Your vehicle has air vents in
the center and on the sides
of your instrument panel.
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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:
0 Climb a long hill on a hot day.
0 Stop after high-speed driving.
0 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:
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 window as necessary. 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 ofSthe
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.
3. If you’re in a traffic jam, shift to NEUTRAL (N);
otherwise, shift to the highest gear while
driving
-- DRIVE (D).
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Engine Fan Noise If a Tire Goes Flat
Your vehicle has a clutched engine cooling fan. When the
clutch is engaged,
the fan spins faster to provide more air
to cool the engine. In most everyday driving conditions,
the fan is spinning slower and
the clutch is not fully
engaged. This improves
fuel economy and reduces fan
noise. Under heavy vehicle loading, trailer towing andor
high outside temperatures,
the fan speed increases as the
clutch more fully engages.
So you may hear an increase in
fan noise. This is normal and should not
be mistaken as
the transmission slipping or making extra shifts. It is
merely the cooling system functioning properly. The fan
will slow down when additional cooling
is not required
and the clutch partially disengages.
You may also hear this fan noise when you start
the engine. It will go away as
the fan clutch
partially disengages. It’s unusual
for a tire to “blow out” while you’re driving,
especially if you maintain your tires properly. If air goes
out of a tire, it’s much more likely to leak out slowly.
But
if you should ever have a “blowout,” here are a few
tips about what
to expect and what to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot off the
accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake
to
a stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like a
skid and may require the same correction you’d use in a
skid. In any rear blowout, remove your foot from the
accelerator pedal. Get the vehicle under control by
steering the way
you want the vehicle to go. It may be
very bumpy and noisy, but you can still steer. Gently
brake
to a stop -- well off the road if possible.
If a tire goes flat, the next part shows how to use your
jacking equipment to change a flat tire safely.
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If your vehicle is certified to meet California Emission
Standards (indicated on the underhood emission control
label), it is designed to operate on fuels that meet
California specifications. If such fuels are not available
in states adopting California emissions standards, your
vehicle will operate satisfactorily on fuels meeting
federal specifications, but emission control system
performance may be affected. The malfunction indicator
lamp on your instrument panel may turn on and/or your
vehicle may fail a smog-check test. If this occurs, return
to your authorized
GM dealer for diagnosis to determine
the cause of failure. In the event it is determined that
the
cause of the condition is the type of fuels used, repairs
may not be covered by your warranty.
Some gasolines that are not reformulated for
low
emissions contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT);
ask your service station operator whether or not his fuel
contains MMT. General Motors does not recommend the
use of such gasolines. If fuels containing MMT are used,
spark plug life may be reduced and your emission
control system performance may be affected. The
malfunction indicator lamp on your instrument panel
may turn on. If this occurs, return to your authorized
GM dealer for service.
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent deposits from forming
in your engine and fuel
system, allowing your emission control system to
function properly. Therefore,
you should not have to add
anything to the fuel. In addition, gasolines containing
oxygenates, such as ethers and ethanol, and
reformulated gasolines may be available in your area to
help clean the air. General Motors recommends that you
use these gasolines
if they comply with the
specifications described earlier.
NOTICE:
Your vehicle was not designed for fuel that
contains methanol. Don’t use it. It can corrode
metal parts in your fuel system and also damage
plastic and rubber parts. That damage wouldn’t
be covered under your warranty.
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Checking Things Under the Hood
A CAUTION:
If your vehicle has air conditioning, the auxiliary
engine fan under the hood can start up and
injure you even when the engine is not running.
Keep hands, clothing and tools
away from any
underhood electric fan.
A CAUTION:
Things that burn can get on hot engine parts
and start
a fire. These include liquids like
gasoline
or diesel fuel, oil, coolant, brake fluid,
windshield washer and other fluids, and plastic
or rubber. You or others could be burned. Be
careful not to drop or spill things that will burn
onto a hot engine.
To open the hood, first
pull this handle inside the
vehicle. It is
just in front of
the driver’s side door frame
near the floor.
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