cooling PONTIAC FIREBIRD 1999 Owners Manual

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2-11 Resynchronization
Resynchronization may be necessary due to the security
method used by the remote keyless entry system. The
transmitter does not send the same signal twice to the
receiver. The receiver will not respond to a signal it has
been sent previously. This prevents anyone from recording
and playing back the signal from the transmitter.
To resynchronize the transmitter with the receiver, stand
close to your vehicle, and at the same time press and
hold the LOCK and UNLOCK buttons on the
transmitter for about eight seconds. The door locks
should cycle and the parking lamps should flash to
confirm synchronization. If this does not happen, you
may need to replace the battery in your transmitter or
match the transmitter to your vehicle.
Hatch
CAUTION:
It can be dangerous to drive with the hatch open
because carbon monoxide (CO) gas can come into
your vehicle. You can't see or smell CO. It can
cause unconsciousness and even death.
If you must drive with the hatch open or if
electrical wiring or other cable connections must
pass through the seal between the body and
the hatch:

Make sure all other windows are shut.

Turn the fan on your heating or cooling
system to its highest speed with the setting
on VENT. That will force outside air into
your vehicle. See ªComfort Controlsº in
the Index.

If you have air outlets on or under the
instrument panel, open them all the way.
See ªEngine Exhaustº in the Index.

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3-2
Comfort Controls
With this system you can control the heating, air
conditioning and ventilation in your vehicle.
Your vehicle also has the flow
-through ventilation
system described later in this section.
Fan Control Knob
Turn the fan knob to select the force of air
you want.Temperature Control Knob
Turn the center knob to change the temperature of the
air flowing from the system. Turn it toward the red
(clockwise) for warmer air and toward the blue
(counterclockwise) for cooler air.
Air Control Knob
OFF: The system is off.
MAX: Provides maximum cooling or quick cool
-down
on very hot days. This setting recirculates most of the air
inside your vehicle. If it is used for long periods of time
the air may become dry. This setting directs air through
the upper air vents.
A/C: Use for normal cooling on hot days. This setting
cools outside air and directs it through the upper air vents.
The air conditioner compressor operates in MAX, A/C,
bi
-level, blend and defrost when the outside temperature
is above freezing. When the air conditioner is on, you
may sometimes notice slight changes in your vehicle's
engine speed and power due to the operation of
the compressor.

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3-3
BI-LEVEL: Air is directed through the upper air
vents and the heater ducts.
VENT: Air flows through the upper air vents.
HEATER: This setting directs most of the air
through the heater ducts and some of the air through the
windshield defroster vents.
BLEND: Air is directed through the windshield
defroster vents and the heater ducts.
DEFROST: This setting directs most of the air
through the windshield defroster vents and some of the
air through the heater ducts.
Cooling
The air conditioner works best if you keep your
windows closed. On very hot days, open the windows
just long enough for the hot air to escape.
1. Turn the air control knob to A/C for normal cooling.
For faster cooling turn the knob to MAX.
2. Turn the temperature control knob to a
comfortable setting.
3. Turn the fan control knob to the desired speed.
Heating
The heater works best if you keep your windows closed
while using it.
1. Turn the air control knob to heater.
2. Turn the fan control knob to the desired speed.
3. Turn the temperature control knob to a
comfortable setting.
During initial start
-up only, if your vehicle is equipped
with an optional engine coolant heater, you can use it in
cold weather (around +20
F/
-8
C or lower) to improve
heater performance on initial start up. See ªEngine
Coolant Heaterº in the Index.
Bi-Level Heating
You may want to use bi-level heating on cool, but sunny
days. This setting directs cool air toward your body and
warmer air toward your feet.
1. Turn the air control knob to bi
-level.
2. Turn the temperature control knob to a
comfortable setting.
3. Turn the fan control knob to the desired speed.

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3-4 Ventilation
For mild outside temperatures when little heating or
cooling is needed, you can still direct outside air through
your vehicle.
1. Turn the air control knob to vent.
2. Turn the temperature control knob to a
comfortable setting.
3. Turn the fan control knob to the desired speed.
Defogging and Defrosting
1. Turn the air control knob to defrost.
2. Turn the temperature control knob to the
desired setting.
3. Turn the fan control knob to the desired speed.
The side window defogging works equally as well in the
heater, blend and defrost modes.
Rear Window Defogger
The rear window defogger
uses a warming grid to
remove fog from the
rear window.
Press the button to turn on the defogger. An indicator
light will come on to remind you that the defogger is on.
The 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 turn the
defogger off by pressing the button again. The indicator
light will go off when the system is turned off.
Do not attach anything like a temporary vehicle license
or a decal across the defogger grid on the rear window.

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3-5
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.
Ventilation System
Adjust the direction of airflow by moving the vents.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 blower fan is running.
For mild outside temperature when little heating or
cooling is needed, you can still direct outside air through
your vehicle.
1. Turn the air control knob to vent.
2. Turn the temperature control knob to a
comfortable setting.
3. Turn the fan control knob to the desired speed.
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.

When you enter a vehicle in cold weather, turn the
fan control knob clockwise 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.

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4-25
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, tires, cooling system and
transmission. 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.
CAUTION:
If you don't shift down, your brakes could get so
hot that they wouldn't work well. You would then
have poor braking or even none going down a hill.
You could crash. Shift down to let your engine
assist your brakes on a steep downhill slope.
CAUTION:
Coasting downhill in NEUTRAL (N) 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 would
then have poor braking or even none going down
a hill. You could crash. Always have your engine
running and your vehicle in gear when you
go downhill.

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4-40 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 transmission fluid (don't
overfill), engine oil, axle lubricant, drive belts, cooling
system and brake system. Each of these is covered in
this manual, and the Index will help you find them
quickly. If you're trailering, it's a good idea to review
this information before you start your trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When Trailer Towing
Your cooling system may temporarily overheat during
severe operating conditions. See ªEngine Overheatingº
in the Index.

5-
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5-1
Section 5 Problems on the Road
Here you'll find what to do about some problems that can occur on the road.
5
-2 Hazard Warning Flashers
5
-3 Other Warning Devices
5
-3 Jump Starting
5
-8 Towing Your Vehicle
5
-9 Engine Overheating5
-12 Cooling System
5
-24 If a Tire Goes Flat
5
-22 Changing a Flat Tire
5
-36 Compact Spare Tire
5
-37 If You're Stuck: In Sand, Mud, Ice or Snow

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5-12
Cooling System
When you decide it's safe to lift the hood, here's what
you'll see:
A. Electric Engine Cooling Fans
B. Radiator Pressure Cap
C. Coolant Recovery Tank
CAUTION:
An electric engine cooling fan under the hood can
start up even when the engine is not running and
can injure you. Keep hands, clothing and tools
away from any underhood electric fan.
If the coolant inside the coolant recovery tank is boiling,
don't do anything else until it cools down.

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5-13
When it is cool, remove the coolant recovery tank cap
and look at the dipstick. The coolant level should be at
the FULL 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.
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.