2000 PONTIAC GRAND PRIX cooling

For
a More
Detailed Look at
What's Under the Hood
See Section 6
Tire Pressure
See Section 6
Service Station Guide
Oil Viscosity
Engine Oil
See Section 6
Engine Oil Dipstick
See Section 6Fuel
Use unleaded gas only,
87 Octane or higher.

See Section 6
Cooling System
See Section 5
Hood Release
See Section 6
Windshield Washer
Fluid
See Section 6
Spare Tire Pressure
See Section 5
Battery
See Section 6

2-23
Trunk
CAUTION:
It can be dangerous to drive with the trunk 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 trunk open or if
electrical wiring or other cable connections must
pass through the seal between the body and
the trunk:

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.
Trunk Lock
To unlock the trunk from the outside, insert the master
key and turn the key clockwise. You can also press the
trunk symbol on the remote keyless entry transmitter
(if equipped).
Remote Trunk Release (If Equipped)
Press the button located
behind the glove box door
to unlock the trunk from
inside the vehicle.
The shift lever must be in PARK (P) for the remote
trunk release button to work.

2-76 Engine Coolant Temperature Light
This light tells you that the
engine coolant has
overheated or the radiator
cooling fan is not working.
If you have been operating the vehicle under normal
driving conditions, you should pull off the road, stop the
vehicle and turn off the engine as soon as possible.
See ªEngine Overheatingº in the Index.
Engine Coolant Temperature Gage
United States Canada
You have a gage that shows the engine coolant
temperature. If the gage pointer moves into the red area,
the engine is too hot!
That reading means the same thing as the warning light.
It means that the engine coolant has overheated. If you
have been operating the vehicle under normal
conditions, you should pull off the road, stop the
vehicle, and turn off the engine as soon as possible.
See ªEngine Overheatingº in the Index.

3-2
Comfort Controls
Air Conditioning with Electronic Controls
With this system, you can control the heating, cooling
and ventilation in your vehicle. The system works best if
you keep your windows closed while using it.
Fan Knob
The left knob selects the amount of air you want. To turn
the fan off, turn the knob to OFF. The fan must be on to
run the air conditioning compressor.Temperature Knob
The center knob changes the temperature of the air
coming through the system. Turn this knob toward red
(clockwise) for warmer air. Turn it toward blue
(counterclockwise) for cooler air.
Mode Knob
The right knob has several settings to control the
direction of airflow:
MAX: This setting recirculates much of the air
inside your vehicle and sends it through the instrument
panel outlets. The air conditioning compressor will run
automatically in this setting unless the outside
temperature is below 38
F (3.3
C). (Even when the
compressor is running, you can control the temperature.)
UPPER: This setting brings in outside air and
directs it through the instrument panel outlets.
BI-LEVEL: This setting brings in outside air and
directs it two ways. Half of the air is directed through
the instrument panel outlets. Most of the remaining air is
directed through the floor ducts and a small amount to
the defrost and side window vents.

3-3
FLOOR: This setting sends most of the air
through the ducts near the floor. The remaining airflow
comes out of the defroster and side window vents.
DEFOG: This setting allows half of the air to go
to the floor ducts and half to the defroster and side
window vents.
DEFROST: This setting directs most of the air
through the defroster. Some of the air goes to the floor
ducts and the side window vent. The air conditioning
compressor will run automatically in this setting unless
the outside temperature is below 38
F (3.3
C).
Air Conditioning Compressor Button
Press the A/C button to operate the air conditioning
compressor. The indicator light above the button will
glow when the button is pressed. You don't have to
press the button to run the compressor in MAX or
DEFROST because it will already be running in
these modes.Air Conditioning
On very hot days, open the windows long enough to let
hot, inside air escape. This reduces the time for the
vehicle to cool down.
For quick cool
-down on very hot days, use MAX with
the temperature knob all the way in the blue area. If this
setting is used for long periods of time, the air in your
vehicle may become too dry.
For normal cooling on hot days, use UPPER with the
temperature knob in the blue area and the A/C button
pushed in. The system will bring in outside air and
cool it.
On cool, but sunny days, the sun may warm your upper
body, but your lower body may not be warm enough.
You can use BI
-LEVEL with the temperature knob in
the middle and the A/C button pushed in. The system
will bring in outside air and direct it to your upper body,
while sending slightly warmed air to your lower body.
You may notice this temperature difference more at
some times than others.

3-4
Heating
On cold days use FLOOR with the temperature knob all
the way in the red area. The system will bring in outside
air, heat it and send it to the floor ducts.
If your vehicle has an engine coolant heater, you can use
it to help your system provide warm air faster when it's
cold outside 0
F (
-18
C) or lower. An engine coolant
heater warms the coolant your engine and heating
system use to provide heat. See ªEngine Coolant
Heaterº in the Index.
Ventilation
For mild outside temperatures when little heating or
cooling is needed, use UPPER, with the A/C button off,
to direct outside air through your vehicle. Your vehicle
also has the flow
-through ventilation system described
later in this section.
Defogging and Defrosting
Your system has two settings for clearing the front and
side windows. To defrost the windows quickly, use
DEFROST with the temperature knob all the way in the
red area. To warm passengers while keeping the
windows clear, use DEFOG.
Air Conditioning with Automatic and
Auxiliary Temperature Control
(If Equipped)
With this system, you set a ªdesired cabinº temperature.
You can then either let the system automatically control
airflow direction and amount (to maintain the desired
cabin temperature) or you can manually adjust it. The
system works best if you keep your windows closed
while using it.

3-6
Hot Weather Example: When you start the vehicle in
hot weather, 80
F (27
C) or after being parked during
the day in full sun, if your Driver Set Temperature is
73
F (23
C) and you are in Full Automatic mode, the
system will automatically move the temperature doors to
full cold. The blower will be at low speed momentarily
and then go to the high speed. The air intake will be
recirculated for maximum cooling performance. As the
interior of the vehicle cools down to your desired
comfort point, the blower will decrease and the
temperature door will move to a warmer position to
maintain your desired comfort. As the cabin cools down
or the sun load decreases the system could switch to air
delivered to A/C vents and the floor (BI
-LEVEL mode).
Manual Control
Fan Buttons
The fan buttons select the amount of air you want when
the system is not in AUTO. The display will show the
fan speed by illuminating a maximum of seven fan bars.Mode Button
The center panel has several settings to control the
direction of airflow when the system is not in AUTO.
The indicator light on the button will glow when the
button is pressed. To access the various modes available,
continue to press the MODE button until the desired
mode appears on the display.
If you prefer to manually control the heating, cooling
and ventilation in your vehicle, push UPPER, BI
-LEV,
LOWER, DEFOG or DEF. AUTO will go off the
display. Set the system to the temperature and fan speed
you want. The system will try to maintain the
temperature you set using the mode you select. The
following suggestions will help the system run more
efficiently in manual mode.
RECIRC: This setting recirculates much of the
air inside your vehicle and sends it through the
instrument panel outlets. The air conditioning
compressor will run automatically in this setting unless
the outside temperature is below 38
F (3.3
C).
Please note that operating the system in the
RECIRCULATION mode may cause fogging of the
windows when the weather is cold and damp. To clear
the fog, select either the DEFOG or DEFROST mode
and increase the fan speed. To avoid re
-fogging of the
windows, use the OUTSIDE AIR mode.

3-7
UPPER: This setting brings in the outside air and
directs it through the instrument panel outlets.
BI-LEV: This setting brings in the outside air and
directs it two ways. Half of the air is directed through
the instrument panel outlets. Most of the remaining air is
directed through the floor ducts and a little to the defrost
and side window vents.
LOWER: This setting sends most of the air
through the ducts near the floor. The remaining airflow
comes out of the defroster and side window vents.
Please note that the windows may fog up when using
this setting. See ªRecirculationº in the Index for
more information.
DEFOG: This setting allows half of the air to go
to the floor ducts and half to the defroster and side
window vents.
DEF: This setting directs most of the air through
the defrost vent. Some of the air goes to the floor ducts
and the side window vents. The air conditioning
compressor will run automatically in this setting unless
the outside temperature is below 38
F (3.3
C).Air Conditioning
On very hot days, open the windows long enough to let
hot, inside air escape. This reduces the time for the
vehicle to cool down.
For quick cool
-down on very hot days, use RECIRC.
If this setting is used for long periods of time, the air in
your vehicle may become too dry.
For normal cooling on hot days, use UPPER with the
A/C button pushed in. The system will bring in outside
air and cool it.
On cool, but sunny days, the sun may warm your upper
body, but your lower body may not be warm enough.
You can use BI
-LEV with the A/C button pushed in.
The system will bring in outside air and direct it to your
upper body, while sending slightly warmed air to your
lower body. You may notice this temperature difference
more at some times than others.