2003 CHEVROLET MONTE CARLO coolant temperature

Engine Coolant Heater
Your vehicle may be equipped with this feature. In very
cold weather, 0ÉF (-18ÉC) or colder, the engine
coolant heater can help. You'll get easier starting and
better fuel economy during engine warm-up. Usually, the
coolant heater should be plugged in a minimum of
four hours prior to starting your vehicle. At temperatures
above 32ÉF (0ÉC), use of the coolant heater is not
required.
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord. The
cord is attached to the underside of the diagonal
brace, which is located above the engine air
cleaner/®lter assembly.
3. Plug it into a normal, grounded 110-volt AC outlet.
{CAUTION:
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the
wrong kind of extension cord could overheat
and cause a ®re. You could be seriously
injured. Plug the cord into a properly grounded
three-prong 110-volt AC outlet. If the cord
won't reach, use a heavy-duty three-prong
extension cord rated for at least 15 amps.
4. Before starting the engine, be sure to unplug and
store the cord as it was before to keep it away
from moving engine parts. If you don't, it could be
damaged.
2-20

How long should you keep the coolant heater plugged
in? The answer depends on the outside temperature, the
kind of oil you have, and some other things. Instead
of trying to list everything here, we ask that you contact
your dealer in the area where you'll be parking your
vehicle. The dealer can give you the best advice for that
particular area.
Automatic Transaxle Operation
Your automatic transaxle has a shift lever located on
the console between the front seats.
The above graphic is displayed on your instrument
panel cluster.
Maximum engine speed is limited on automatic transaxle
vehicles while you're in PARK (P) or NEUTRAL (N) to
protect driveline components from improper operation.
2-21

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-7
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-7
Exterior Lamps.............................................3-15
Interior Lamps..............................................3-17
Accessory Power Outlets...............................3-20
Auxiliary Power Connection (Power Drop).........3-21
Ashtrays and Cigarette Lighter........................3-21
Climate Controls............................................3-22
Dual Climate Control System..........................3-22
Passenger Compartment Air Filter...................3-28
Warning Lights, Gages and Indicators.............3-30
Instrument Panel Cluster................................3-31
Speedometer and Odometer...........................3-33
Tachometer.................................................3-33
Safety Belt Reminder Light.............................3-34
Air Bag Readiness Light................................3-34
Voltmeter Gage............................................3-35
Brake System Warning Light..........................3-36
Anti-Lock Brake System Warning Light.............3-37Traction Control System (TCS)
Warning Light...........................................3-37
Engine Coolant Temperature Gage..................3-38
Malfunction Indicator Lamp.............................3-38
Oil Pressure Indicator Light............................3-42
Cruise Control Light......................................3-43
Fuel Gage...................................................3-43
Message Center.............................................3-44
Service Traction System Warning Message......3-44
Traction Active Message................................3-45
Battery Warning Message..............................3-45
Hot Coolant Temperature Warning Message.....3-46
Low Oil Pressure Message............................3-46
Low Engine Oil Level Message.......................3-47
Change Engine Oil Message..........................3-47
Low Tire Message........................................3-48
Door Ajar Warning Message...........................3-48
Trunk Ajar Warning Message.........................3-49
Security Message.........................................3-49
Low Washer Fluid Warning Message...............3-50
Low Fuel Warning Message...........................3-50
Low Brake Fluid Warning Message.................3-51
Service Vehicle Soon Message.......................3-51
Highbeam Out Warning Message....................3-52
Section 3 Instrument Panel
3-1

?(Recirculation):Press this button to turn the
recirculation mode on. When this mode is on, inside air
and a small percentage of outside air will recirculate
throughout your vehicle. This selection will reduce
the entry of outside air and odors from entering your
vehicle, it may also help heat or cool your vehicle more
quickly. When this button is pressed, an indicator
light in the button will also come on to let you know that
it is activated. During daylight hours, you may have
to adjust the instrument panel brightness control to the
highest setting in order to see the indicator light.
See
Interior Lamps on page 3-17for more information.
The recirculation mode can be used with vent and
bi-level modes, but it cannot be used with ¯oor, defog,
defrost or outside air modes.
This system will default back to the outside air setting,
so you will have to re-select this setting every time
that you start the vehicle.
If the weather is cold and damp, the system may cause
the windows to fog while using the recirculation
mode. If the windows do start to fog, do the following:
1. Select the defog or defrost mode.
2. Select the temperature.
3. Select the highest fan speed.
4. Operate the system in the outside air mode, to help
prevent a recurrence.
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 0ÉF (-18ÉC) 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,
see
Engine Coolant Heater on page 2-20.
3-24

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 210ÉF (100ÉC) or less.
If you are pulling a load or going up hills, it is normal for
the temperature to ¯uctuate and approach the 250ÉF
(122ÉC) mark. When the gage reads greater than 250ÉF
(122ÉC), the HOT COOLANT TEMP light will be
illuminated in the message center and a chime will
sound continuously. If the gage reaches the 260ÉF
(125ÉC) mark, it indicates that the cooling system is
working beyond its capacity.
See
Engine Overheating on page 5-29.
Malfunction Indicator Lamp
Check Engine Light
United States-3400 V6
Engine ClusterUnited States-3800 V6
Engine Cluster
Canada-3400 V6 Engine
ClusterCanada-3800 V6 Engine
ClusterUnited StatesCanada
3-38

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. See
Engine Coolant on page 5-26,Engine Coolant
Temperature Gage on page 3-38andEngine
Overheating on page 5-29for further information.
Low Oil Pressure Message
This message is displayed when the engine oil pressure
is low. A chime will sound continuously, also. See Oil
Pressure Indicator Light on page 3-42. United States
Canada
United StatesCanada
3-46

How to Add Fluid
Refer to the Maintenance Schedule to determine
what kind of transaxle ¯uid to use. See
Part D: Recommended Fluids and Lubricants
on page 6-16.
If the ¯uid level is low, add only enough of the proper
¯uid to bring the level into the cross-hatched area on
the dipstick.
1. Pull out the dipstick.
2. Using a long-neck funnel, add enough ¯uid at the
dipstick hole to bring it to the proper level.
It doesn't take much ¯uid, generally less than
one pint (0.5 L).
Don't over®ll.
Notice:
We recommend you use only ¯uid labeled
DEXRONž±III, because ¯uid with that label is
made especially for your automatic transaxle.
Damage caused by ¯uid other than DEXRON
ž±III is
not covered by your new vehicle warranty.
3. After adding ¯uid, recheck the ¯uid level as
described under ªHow to Checkº earlier in this
section.
4. When the correct ¯uid level is obtained, push the
dipstick back in all the way.
Engine Coolant
The cooling system in your vehicle is ®lled with
DEX-COOLžengine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs ®rst, if you add
only DEX-COOL
žextended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating or if you need to add coolant to
your radiator, see
Engine Overheating on page 5-29.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
žcoolant will:
·Give freezing protection down to-34ÉF (-37ÉC).
·Give boiling protection up to 265ÉF (129ÉC).
·Protect against rust and corrosion.
·Help keep the proper engine temperature.
·Let the warning lights and gages work as they
should.
5-26

Radiator Pressure Cap
Notice:Your radiator cap is a pressure-type cap
and must be tightly installed to prevent coolant loss
and possible engine damage from overheating.
Be sure the arrows on the cap line up with the
over¯ow tube on the radiator ®ller neck.
The radiator pressure cap is located in the front of the
engine compartment on the passenger's side, near
the diagonal cross brace. See
Engine Compartment
Overview on page 5-12for more information on location.
Engine Overheating
You will ®nd a coolant temperature gage and a warning
message about a hot engine on your instrument
panel cluster. See
Engine Coolant Temperature Gage
on page 3-38andHot Coolant Temperature Warning
Message on page 3-46.
Overheated Engine Protection
Operating Mode
This emergency operating mode allows your vehicle to
be driven to a safe place in an emergency situation.
If an overheated engine condition exists, an overheat
protection mode which alternates ®ring groups of
cylinders helps prevent engine damage. In this mode,
you will notice a signi®cant loss in power and engine
performance. The low coolant light may come on
and the temperature gage will indicate an overheat
condition exists. Driving extended miles (km) and/or
towing a trailer in the overheat protection mode should
be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine damage,
allow the engine to cool before attempting any
repair. The engine oil will be severely degraded.
Repair the cause of coolant loss, change the oil and
reset the oil life system. See ªEngine Oilº in the
Index.
5-29