2001 CHEVROLET IMPALA cooling

Service Station Guide
Oil Viscosity
Engine Oil
See Section 6
Engine Oil Dipstick
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

For
a More
Detailed Look at
What's Under the Hood
See Section 6
Tire Pressure
See Section 6
Fuel
Use unleaded only.
See Section 6
for octane ratings.

2-13
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't 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 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 key in
the lock and turn it. You can also press the car symbol
on your remote keyless entry transmitter (if equipped).
Remote Trunk Release
You can also unlock
the trunk from inside
the vehicle.
Press the button located below the headlamp control
knob on the underside of the dashboard. The shift
lever must be in PARK (P) for the remote trunk release
button to work.

2-83
Engine Coolant Temperature Gage
United States-3400 V6
Engine ClusterUnited States-3800 V6
Engine Cluster
Canada-3400 V6
Engine ClusterCanada-3800 V6
Engine ClusterThis 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 fluctuate 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.
See ªEngine Overheatingº in the Index.

2-90
Battery Life Indicator
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 Temp
United States Canada
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 ªEngine Coolant,º ªEngine Coolant
Temperature Gageº and ªEngine Overheatingº in the
Index for further information.

2-91
Low Coolant Level
United States Canada
This message is displayed when the cooling system is
low on coolant. Four chimes will also sound.
The engine may overheat. See ªEngine Coolantº in the
Index and have your vehicle serviced as soon as you can.Low Oil PressureUnited States Canada
This message is displayed when the engine oil
pressure is low. A chime will sound continuously, also.
See ªLow Oil Pressure Lightº earlier in this section.

3-2
Comfort Controls
Manual Single Zone Climate Control
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 knob on the left side of the climate control panel
regulates the fan speed. To turn the fan off, turn the
knob to OFF.If airflow seems very low when the fan knob is turned to
the highest setting, regardless of the mode setting, your
passenger compartment air filter (if equipped) may need
to be replaced. See ªMaintenance Scheduleº in the Index.
Temperature Knob
The center knob on the control panel 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 on the control panel has several settings
to control the direction of the airflow:UPPER: This setting directs air through the
instrument panel outlets.
BI-LEVEL: This setting directs air two ways.
Half of the air is directed through the instrument panel
outlets. Most of the remaining air is directed through the
floor vents and a small amount to the windshield
defroster and side window outlets.

3-4 Dual ComforTemp
Climate Control
(If Equipped)
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 knob on the left side of the climate control panel
regulates the fan speed. To turn the fan off, turn the
knob to OFF.
If the airflow seems very low when the fan is adjusted to
the highest setting regardless of the mode setting, your
passenger compartment air filter (if equipped) may need
to be replaced. See ªMaintenance Scheduleº in the Index.Driver's Temperature Lever
The lever on the left adjusts the air temperature on
the driver's side independent of the temperature set
by the passenger. Slide the lever upward to raise the
temperature. Slide the lever downward to lower
the temperature.
Passenger's Temperature Lever
The lever on the right adjusts the air temperature on
the passenger's side independent of the temperature
set by the driver. Slide the lever upward to raise the
temperature. Slide the lever downward to lower
the temperature.
Mode Knob
The knob on the right side of the control panel has
several settings to control the direction of airflow:
UPPER: This setting directs air through the
instrument panel outlets.
BI-LEV: This setting directs air two ways.
Half of the air is directed through the instrument panel
outlets. Most of the remaining air is directed through
the floor vents and a small amount to the windshield
defroster and side window outlets.

3-6 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. Then keep your windows closed
for the air conditioner to work its best.
For quick cool down on very hot days, turn the mode
knob on the control panel to UPPER; push the A/C
button on; push the RECIRCULATION button on and
move the temperature control(s) all the way into 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, turn the mode knob on
the control panel to UPPER; push the A/C button on;
push the OUTSIDE AIR button on and move the
temperature control all the way into the blue area. 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.
To remedy this you can turn the mode knob on the
control panel to BI
-LEV. Push the A/C button on and
move the temperature control to a comfortable setting.
Heating
On cold days, turn the mode knob on the control panel
to LOWER, push the OUTSIDE AIR button on and
move the temperature control all the way in the red area.
The system will bring in outside air, heat it and send it to
the floor ducts.
Ventilation
For mild outside temperatures when little heating or
cooling is needed, turn the mode knob on the control
panel to UPPER; push the A/C button off; push the
OUTSIDE AIR button on and move the temperature
control(s) to a comfortable setting. 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 control(s) all the way
in the red area. To warm passengers while keeping the
windows clear, use DEFOG. For more information,
see ªRecirculationº in the Index.