2001 CHEVROLET IMPALA Owners Manual

2-99
Compass Variance
Compass variance is the difference between magnetic
north and geographic north. In some areas of the
country, the difference is great enough to cause the
compass to give false readings. If this occurs, the
compass variance must be set.
Setting the Variance
Turn the ignition on and cycle the DIC to the
Compass/Temperature mode. Press the RESET
button for approximately five seconds. The last entered
variance zone number and ªVARº will be displayed.
Press the MODE button until the proper variance
number on the map is shown. Press the RESET button to
set the new variance zone and resume normal operation.
All the display segments will be illuminated briefly to
acknowledge the change in zone number. A chime will
sound to confirm that the new zone number has been set.
Automatic Compass Calibration
The compass is self
-calibrating, which eliminates the
need to manually set the compass. When the vehicle
is new, the calibration process may not be complete.
In these cases ªCALº will be displayed, and all
segments of the compass will be illuminated where
the compass reading is normally displayed.
All Segments Illuminated

2-100
To calibrate the compass, in an area free from large
metal objects, make one to two 360
turns.
The calibration symbol will turn off and the compass
reading will be displayed.
Manual Compass Calibration
If the compass appears erratic and the calibration
symbol does not appear, you must manually put the
compass into the calibration mode.
Turn the ignition on and cycle the DIC to the
Compass/Temperature mode. Press the RESET button
for at least 10 seconds until the calibration symbol
appears and all segments of the compass display are
illuminated. A chime will sound to confirm that the
calibration mode is active. Release the button and
complete two or three 360
turns in an area free from
large metal objects. The calibration symbol will turn off
and the compass reading will be displayed. A chime will
sound to verify that the calibration is complete.
Error Displays

An error of the speed sensor or fuel sender will
cause
-E- to be displayed.

In the absence of vehicle communications, a
dash ª
--º is displayed.
If one of these error messages appear, see your dealer.
Trip Computer
There are five trip computer displays which may be
stepped through by pushing the MODE button.
The information will appear in the following order:

AVG ECON (Average Fuel Economy): This shows
the average fuel economy since the last reset.

INST ECON (Instantaneous Fuel Economy): This
shows fuel economy for the most recent second
of driving.

RANGE (Trip Range): This shows the estimated
distance that can be traveled with the remaining fuel.
The fuel economy used to calculate range is based on
the last few hours of driving. When in a low fuel
condition, the word ªLOº is displayed.

FUEL USED (Trip Fuel Used): This shows the
accumulated fuel used since the last reset.

AVG SPEED (Average Speed): This shows the
average speed since the last reset.
Resetting the Trip Computer
Press and hold the RESET button for at least three
seconds. The reset is acknowledged with all segments of
the display lit briefly and a chime. A reset can only be
done in AVG ECON, FUEL USED and AVG SPEED
displays. Each setting must be reset individually.

3-
3-1
Section 3 Comfort Controls and Audio Systems
In this section, you'll find out how to operate the comfort control and audio systems offered with your vehicle.
Be sure to read about the particular systems supplied with your vehicle.
3
-2 Comfort Controls
3
-2 Manual Single Zone Climate Control
3
-4 Dual ComforTemp
Climate Control
(If Equipped)
3
-6 Air Conditioning
3
-6 Heating
3
-6 Ventilation
3
-6 Defogging and Defrosting
3
-7 Rear Window Defogger
3
-8 Ventilation System
3
-9 Audio Systems
3
-9 Setting the Clock
3
-9 Setting the Clock for Systems with Radio
Data System
3
-10 AM-FM Stereo
3
-13 AM-FM Stereo with Cassette Tape Player
with Radio Data System (RDS) and Automatic
Tone Control (If Equipped)3
-22 AM-FM Stereo with Compact Disc Player
with Radio Data System (RDS) and Automatic
Tone Control (Option)
3
-31 AM-FM Stereo with Cassette Tape and
Compact Disc Player with Radio Data System
(RDS) and Automatic Tone Control (Option)
3
-41 Theft-Deterrent Feature Non-RDS Radios
3
-41 Theft-Deterrent Feature RDS Radios
(If Equipped)
3
-42 Audio Steering Wheel Controls (If Equipped)
3
-43 Understanding Radio Reception
3
-43 Tips About Your Audio System
3
-44 Care of Your Cassette Tape Player
3
-45 Care of Your Compact Discs
3
-45 Care of Your Compact Disc Player
3
-46 Backglass Antenna
3
-46 Vehicle Customization Settings
3
-46 Chime Level Adjustment

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.

3-3
LOWER: This setting sends most of the air
through the ducts near the floor. The remaining air
comes out of the defroster and side window outlets.
The RECIRCULATION button cannot be selected
in this mode.
DEFOG: This setting sends half of the air
to the floor ducts and half to the defroster and side
window outlets. The air conditioning compressor will
run automatically in this setting unless the outside
temperature is below 40
F (4
C). The air inlet
will also be automatically set to outside air. The
RECIRCULATION button cannot be selected in
this mode.
DEFROST: This setting directs most of the air
through the defroster and side window vents. Some of
the air also goes to the floor ducts. The air conditioning
compressor will run automatically in this setting unless
the outside temperature is below 40
F (4
C). The
air inlet will also be automatically set to outside air.
The RECIRCULATION button cannot be selected
in this mode.
OUTSIDE AIR: Press this button to force the
system to use outside air. This button is usable with all
of the mode settings. An indicator on the button will
light up when this button is selected.
RECIRCULATION: Press this button to limit
the amount of outside air entering your vehicle. This is
helpful when you are trying to limit odors entering your
vehicle. This button is usable in UPPER and BI
-LEVEL
modes. An indicator on the button will light up when
this button is selected. The system will default back to
the outside air setting, so you will have to reselect this
setting every time you restart your vehicle.
While in the RECIRCULATION mode the system
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 refogging of the windows, use the
OUTSIDE AIR setting.
A/C: Press this button to turn the air conditioning
on and off. The system will cool and dehumidify the air
inside the vehicle when the A/C light and the fan are on.

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.

3-5
LOWER: This setting sends most of the air
through the ducts near the floor. The remaining air
comes out of the defroster and side window outlets.
The RECIRCULATION button cannot be selected
in this mode.
DEFOG: This setting sends half of the air
to the floor ducts and half to the defroster and side
window outlets. The air conditioning compressor will
run automatically in this setting unless the outside
temperature is below 40
F (4
C). The air inlet
will also be automatically set to outside air. The
RECIRCULATION button cannot be selected in
this mode.
DEFROST: This setting directs most of the air
through the defroster and side window vents. Some of
the air also goes to the floor ducts. The air conditioning
compressor will run automatically in this setting unless
the outside temperature is below 40
F (4
C). The
air inlet will also be automatically set to outside air.
The RECIRCULATION button cannot be selected
in this mode.
OUTSIDE AIR: Press this button to force the
system to use outside air. This button is usable in all of
the mode settings. An indicator on the button will light
up when this button is selected.
RECIRCULATION: Press this button to limit
the amount of outside air entering your vehicle. This is
helpful when you are trying to limit odors entering your
vehicle. This button is usable in UPPER and BI
-LEVEL
modes. An indictor on the button will light up when this
button is selected. The system will default back to the
outside air setting, so you will have to reselect this
setting every time you restart your vehicle.
While in the RECIRCULATION mode the system
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 refogging of the windows, use the
OUTSIDE AIR setting.
A/C: Press this button to turn the air conditioning
on and off. The system will cool and dehumidify the air
inside the vehicle when the A/C light and the fan are on.

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.