2004 CHEVROLET MONTE CARLO cooling

Lockout Protection
To protect you from locking your key in the vehicle, this
feature stops the power door locks from locking while
the key is in the ignition and a door is open.
If a power lock switch is pressed while a door is open
and the key is in the ignition, both doors will lock
and then the driver’s door will unlock. A chime will sound
continuously until both doors are closed.
Leaving Your Vehicle
If you are leaving the vehicle, take your keys, open your
door and set the locks from inside. Then get out and
close the door.
Trunk
{CAUTION:
It can be dangerous to drive with the trunk lid
open because carbon monoxide (CO) gas can
come into your vehicle. You can not see or
smell CO. It can cause unconsciousness and
even death. If you must drive with the trunk lid
open or if electrical wiring or other cable
connections must pass through the seal
between the body and the trunk lid:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. See Climate Control
System in the Index.
If you have air outlets on or under the
instrument panel, open them all the way.
SeeEngine Exhaust on page 2-29.
2-10

Climate Controls
Dual Climate Control System
With this system you can control the heating, cooling,
defrost, defog and ventilation for your vehicle.
Manual Operation
Turn the right knob clockwise or counterclockwise to
direct the airow inside of your vehicle.To change the current mode, select one of the following:
H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode allows for approximately a
50/50 split of air to the instrument panel outlets and
to the oor outlets.
6(Floor):This mode directs most of the air to the
oor outlets, with some of the air directed to the
windshield and side window outlets. In this mode,
the system will automatically select Outside Air.
The right knob can also be used to select defog or
defrost mode. For information on defogging and
defrosting, see “Defogging and Defrosting” later in this
section.
By positioning the right knob between two modes,
a combination of those two modes is selected.
It should be noted, that the air conditioning compressor
will be engaged unless the outside temperature is
40° F (4°C) or below. Recirculation cannot be selected
when in Floor Mode.
3-21

Heating
Adjust the air temperature by using the following levers:
D (Driver):Slide this lever up or down to raise or
lower the temperature on the driver’s side of the vehicle.
P (Passenger):Slide this lever up or down to raise
or lower the temperature on the passenger’s side of the
vehicle.
To warm your vehicle on cold days, do the following:
1. Select the oor mode.
2. Select the warmest temperature.
3. Select the fan speed.
4. Select outside air mode, after the air has warmed,
to prevent it from becoming too stale.
When it’s cold outside 0°F (−18°C) or lower, use the
engine coolant heater, if equipped, to provide warmer air
faster to your vehicle. An engine coolant heater warms
the coolant that the engine uses to provide heat to
warm the inside of your vehicle. For more information,
seeEngine Coolant Heater on page 2-20.
Cooling
On hot days, open the windows to let hot air escape;
then close them. This helps to reduce the time it takes
for your vehicle to cool down. It also helps the system
to operate more efficiently.
#(Air Conditioning):Press this button to turn the
air-conditioning system on or off. When the system is on,
an indicator light will come on and the system will
begin to cool and dehumidify the air inside of your
vehicle. During daylight hours, you may have to adjust
the instrument panel brightness control to the highest
setting in order to see the indicator light. SeeInterior
Lamps on page 3-16for more information.
You may notice a slight change in engine performance
when the air-conditioning compressor shuts off and
turns on again. This is normal. The system is designed
to make adjustments to help with fuel economy while
still maintaining the selected temperature.
The Air Conditioning System removes moisture from
the air, so you may notice a small amount of water
dripping underneath your vehicle when idling or after
turning off the engine.
3-23

Outlet Adjustment
The ow through ventilation system on your vehicle
allows outside air to enter your vehicle when it is moving.
Outside air will also enter your vehicle when the
air-conditioning compressor is running and even in small
amounts when the recirculation mode is activated.
Use the control located
below or to the side of
the vent, to change
the direction of the air
owing through them or
to shut them off.
For mild outside temperatures when little heating or
cooling is needed, do the following:
1. Select the vent mode.
2. Select outside air mode.
3. Select the temperature.
4. Select the fan speed.
Ventilation Tips

Clear away any ice, snow or leaves from the air
inlets on the hood that may block the ow of air
into your vehicle. This will help to remove fog
or frost from the windows it will also improve
heating.
Select the oor mode and set the fan at the highest
speed when rst starting your vehicle to help clear
the air intake ducts of moisture or snow. This
will also help to remove fog from the windows.
Keep the path under the front seats clear of objects
to help circulate the air inside of your vehicle more
effectively.
3-26

Engine Coolant Temperature GageThis gage shows the engine coolant temperature.
It also provides an indicator of how hard your vehicle
is working. During the majority of the operation,
the gage will read 210°F (100°C) or less.
If you are pulling a load or going up hills, it is normal
for the temperature to uctuate and approach the
250°F (122°C) mark. When the gage reads greater than
250°F (122°C), the HOT COOLANT TEMP light will
be illuminated in the message center and a chime
will sound continuously. If the gage reaches the
260°F (125°C) mark, it indicates that the cooling system
is working beyond its capacity.
SeeEngine Overheating on page 5-34.
United States-3400
V6 Engine Cluster
United States-3800
V6 Engine Cluster
Canada-3400 V6 Engine
ClusterCanada-3800 V6 Engine
Cluster
3-38

Battery Warning Message
When the vehicle is started
this message will be
displayed for three
seconds.
If the message is displayed when the engine is running,
you may have a problem with your charging system.
If there is a problem with the charging system, four
chimes will sound when the message comes on.
The battery display will also stay on while the key is in
ON until the engine is started.
If the message stays on after starting the engine it could
indicate a problem with the generator drive belt, or
some other charging system problem. Have it checked
right away. Driving with this message on could drain
your battery.
If you must drive a short distance with this message
displayed, it helps to turn off all your accessories.
Hot Coolant Temperature Warning
Message
This message is displayed when the cooling system
temperature gets hot. A chime will sound continuously,
also.
Check the coolant temperature gage and the coolant
level. SeeEngine Coolant on page 5-31,Engine Coolant
Temperature Gage on page 3-38andEngine
Overheating on page 5-34for further information.
United StatesCanada
3-45

If you drive regularly in steep country, or if you are
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 uid
levels and also the brakes, tires, 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.
{CAUTION:
If you do not shift down, your brakes could get
so hot that they would not 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 would not 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.
Know how to go uphill. You may want to shift down to
a lower gear. The lower gears help cool your engine
and transaxle, and you can climb the hill better.
Stay in your own lane when driving on two-lane
roads in hills or mountains. Do not swing wide or cut
across the center of the road. Drive at speeds that let
you stay in your own lane.
As you go over the top of a hill, be alert. There could
be something in your lane, like a stalled car or an
accident.
You may see highway signs on mountains that warn
of special problems. Examples are long grades,
passing or no-passing zones, a falling rocks area or
winding roads. Be alert to these and take appropriate
action.
4-25

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 uid (don’t overll),
engine oil, drive belts, cooling system and brake system.
Each of these is covered in this manual, and the
Index will help you nd 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. SeeEngine Overheating on
page 5-34.
4-45