2001 CHEVROLET IMPALA ignition

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.

3-7 Rear Window Defogger
Press the button marked
REAR to turn the defogger
on. An indicator on the
button will light.
When turned on, the rear window defogger uses a
warming grid to remove fog from the rear window.
If your vehicle has the optional heated outside mirrors,
they will heat to clear the mirror surface before driving.The rear window defogger and the mirrors will
automatically turn off after about 15 minutes. If you
turn them on again, the defogger and the mirrors will
only stay on for about seven and one half minutes before
turning off again. You can also turn them off by turning
the ignition off or by pressing the button again.
Do not attach anything like a temporary vehicle license
or decal across the defogger grid.
NOTICE:
Don't use a razor blade or something else sharp
on the inside of the rear window. If you do, you
could cut or damage the warming grid, and the
repairs wouldn't be covered by your warranty.
Don't put decals there because you might have
to scrape them off.

3-9
Audio Systems
Your audio system has been designed to operate easily
and give years of listening pleasure. You will get the
most enjoyment out of it if you acquaint yourself with it
first. Find out what your audio system can do and how
to operate all its controls, to be sure you're getting the
most out of the advanced engineering that went into it.
Setting the Clock
Press and hold the HR or MIN arrow for two seconds.
Then press the HR arrow until the correct hour appears.
Press and hold the MIN arrow until the correct minute
appears. The clock may be set with the ignition on
or off.
Setting the Clock for Systems with
Radio Data System
Press and hold the HR or MN buttons, located below the
tune knob, for two seconds. Then press and hold HR
until the correct hour appears. AM or PM will appear on
the display. Press and hold MN until the correct minute
appears. The clock may be set with the ignition on or
off. The clock symbol will appear on the display in
time
-set mode.
To set the clock to the time of an FM station
broadcasting Radio Data System (RDS) information,
press and hold HR and MN at the same time for
two seconds until UPDATED and the clock symbol
appear on the display. If the time is not available
from the station, NO UPDAT will appear on the
display instead.

3-13 AM-FM Stereo with Cassette Tape Player
with Radio Data System (RDS) and
Automatic Tone Control (If Equipped)
Playing the Radio
PWR: Press this button to turn the system on and off.
VOL: Turn this knob clockwise to increase volume.
Turn it counterclockwise to decrease volume.
DISP: Press this button to display the clock with the
ignition off. Press this button to display an RDS station
frequency or program type when the radio is on.AUTO VOL: Your system has a feature called
Speed
-Compensated Volume (SCV). With SCV,
your audio system adjusts automatically to make up
for road and wind noise as you drive. Set the volume at
the desired level. Press AUTO VOL to adjust the SCV.
AVOL will appear on the display. Each time you press
AUTO VOL, another volume setting (LOW, MEDIUM
or HIGH) will appear on the display. NONE will appear
on the display if the radio cannot find out the vehicle
speed. Then, as you drive, SCV automatically increases
the volume, as necessary, to overcome noise at any
particular speed. The volume level should always sound
the same to you as you drive. If you don't want to use
SCV, select OFF. Each volume setting allows for more
volume compensation at faster vehicle speeds.
Finding a Station
AM FM: Press this button to switch between AM,
FM1 and FM2. The display shows your selection.
TUNE: Turn this knob to choose radio stations.
SEEK: Press the right arrow to tune to the next
higher station and the left arrow to tune to the next
lower station and stay there. The radio will seek to
stations with a strong signal only.

3-19
Playing a Cassette Tape
Your tape player is built to work best with tapes that are
up to 30 to 45 minutes long on each side. Tapes longer
than that are so thin they may not work well in this
player. The longer side with the tape visible should face
to the right. If the ignition is on, but the radio is off,
the tape can be inserted and will begin playing. A tape
symbol is shown on the display whenever a tape is
inserted. If you hear nothing but a garbled sound, the
tape may not be in squarely. Press EJT to remove the
tape and start over.
While the tape is playing, use the VOL, FADE, BAL,
TREB, BASS, and SEEK controls just as you do for
the radio. The display will show TAPE and an arrow
showing which side of the tape is playing.
If you want to insert a tape when the ignition is off,
first press EJT or DISP.If CHK TAPE appears on the radio display, the tape
won't play because of an error.
CHK TAPE may be displayed when the tape is tight and
the player can't turn the tape hubs. Remove the tape.
Hold the tape with the open end down and try to turn
the right hub counterclockwise with a pencil. Turn the
tape over and repeat. If the hubs do not turn easily,
your tape may be damaged and should not be used
in the player. Try a new tape to make sure your player
is working properly.
CHK TAPE may be displayed when the tape is broken.
Try a new tape.
CHK TAPE may be displayed when the tape is wrapped
around the tape head. Attempt to get the cassette out.
Try a new tape.
If any error occurs repeatedly or if an error can't be
corrected, please contact your dealer.

3-21
SIDE (5): Press this button to play the other side of
the tape. TAPE and an up or down arrow will appear
on the display.

(6): Press this button to reduce background noise.
NR ON will appear on the display. Press it again to turn
Dolby off. NR OFF will appear on the display.
Dolby Noise Reduction is manufactured under a license
from Dolby Laboratories Licensing Corporation. Dolby
and the double
-D symbol are trademarks of Dolby
Laboratories Licensing Corporation.
SEEK: SEEK and a right facing triangle is the same
as NEXT, and a left facing triangle and SEEK is the
same as PREV. If the button is held or pressed more
than once, the player will continue moving forward or
backward through the tape. SEEK and a positive or
negative number will appear on the display.
AM FM: Press this button to play the radio when a tape
is in the player. The tape will stop but remain in the player.
TAPE AUX: With a cassette tape in the player and the
radio playing, press this button to play a cassette tape.
Press AM FM to return to the radio when a cassette tape
is playing.
EJT: Press this button located next to the cassette
slot to remove a tape. The radio will play. EJT may be
activated with the radio off. Cassette tapes may be
loaded with the radio off if this button is pressed first.
CLEAN: If this message appears on the display, the
cassette tape player needs to be cleaned. It will still play
tapes, but you should clean it as soon as possible to
prevent damage to the tapes and player. See ªCare of
Your Cassette Tape Playerº in the Index. After you
clean the player, press and hold the eject button for
five seconds to reset the CLEAN indicator. The radio
will display CLEANED to show the indicator was reset.
Tight/Loose Tape Sensor Defeat
With the radio off and the ignition on, press and hold the
TAPE AUX button to disable the tight/loose tape sensing
feature to enable play of some tape head cleaners and
portable CD adapters. The radio will display READY
and flash the cassette icon. The tight/loose tape sensing
feature will then be disabled until the next cassette eject.

3-22
CD Adapter Kits
It is possible to use a portable CD player adapter kit
with your cassette tape player after activating the bypass
feature on your tape player.
To activate the bypass feature, use the following steps:
1. Turn the radio off.
2. Press and hold the TAPE AUX button for
five seconds. READY will appear on the display
for five seconds, indicating the feature is active.
3. Insert the adapter into the cassette slot. It will power
up the radio and begin playing.
This override routine will remain active until EJT
is pressed.
CAL ERR: This message is displayed when the
radio has not been calibrated properly for the vehicle.
You must return to the dealership for service.
LOCKED: This message is displayed when the
THEFTLOCK

system has locked up. You must
return to the dealership for service.
AM-FM Stereo with Compact Disc Player
with Radio Data System (RDS) and
Automatic Tone Control (Option)
Playing the Radio
PWR: Press this button to turn the system on and off.
VOL: Turn this knob clockwise to increase volume.
Turn it counterclockwise to decrease volume.
DISP: Press this button to display the clock with the
ignition off. Press this button to display an RDS station
frequency or program type when the radio is on.