2001 CHEVROLET IMPALA sensor

2-96
Service Vehicle Soon
United States Canada
This message will come on if you have engine problems.
These problems may not be obvious and may not
affect vehicle performance or durability. Consult a
qualified dealership for necessary repairs to maintain
top vehicle performance.
This message may also appear if there are electrical
problems with the trunk release sensor. See ªTrunk
Release Sensorº in the Index for more information.Trunk OpenUnited States Canada
This message will appear if the trunk is not completely
closed and the ignition is in ON.
If you are in a forward or reverse gear position you will
also hear four chimes.
If this message flashes for one minute after the ignition
is turned on, the trunk release sensor is turned off.
See ªTrunk Release Sensorº in the Index for
more information.

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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.

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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.

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SEEK: SEEK and the right facing triangle is the same
as NEXT, and SEEK and the left facing triangle 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 CD: With a tape in the player and the radio
playing, press this button to play a tape. Press AM FM
to return to the radio when a tape is playing. Press TAPE
CD to switch between the tape and compact disc if both
are loaded. The inactive tape or CD will remain safely
inside the radio for future listening.
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 cassette eject button for five
seconds to reset the CLEAN indicator. The radio display
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 CD 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.
Playing a Compact Disc
Insert a disc partway into the slot, label side up. The
player will pull it in. The disc should begin playing.
The display will show the CD symbol. If you want to
insert a compact disc with the ignition off, first press
DISP or EJT.
If you're driving on a very rough road or if it's very hot,
the disc may not play and CHECK CD may appear on
the display. When the road becomes smooth or the
temperature returns to normal, the disc should play.
If the disc comes out, it could be one of the following:

The disc is upside down.

It is dirty, scratched or wet.

It is very humid. (If so, wait about an hour and
try again.)
If any error occurs repeatedly or if an error can't be
corrected, please contact your dealer.

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Underhood Fuse Block (Lower)
Some fuses are in a fuse block on the passenger's side of
the engine compartment. See ªEngine Compartment
Overviewº in the Index for more information on location.
Circuit Relay Description
FAN CONT #3 Secondary Cooling Fan
(Passenger's Side)
FAN CONT #2 Cooling Fan Control Relay
FAN CONT #1 Primary Cooling Fan
(Driver's Side)Circuit Relay Description
IGN RELAY Ignition Relay
A/C CMPR HVAC Compressor
Maxi Fuses Description
IGN SW Ignition Switch
RT I/P #3 Rear Defogger, Audio System
U/HOOD #2 Ignition Relay, AIR Pump
COOLING
FANSCooling Fans (Battery)
Mini Fuses Description
FAN
CONT #2 & #3Cooling Fan Control
Relays #2 & #3
FAN CONT #1 Cooling Fan Control Relays #1
AIR PMP RLY Air Induction Reaction Pump
Relay (Battery)
FUEL INJ Fuel Injectors
TRANS SOL Transmission Solenoids
A/C RLY
(COIL)HVAC Control Relay
ENG DEVICES Canister Purge Solenoid, Mass Air
Flow Sensor (MAF), AIR Pump
Relay & Valve Control
DFI MDL Direct Fire Ignition Module
OXY SEN Oxygen Sensors
(Pre and Post Converter)

7-16 At Least Twice a Year
Restraint System Check
Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages are
working properly. Look for any other loose or damaged
safety belt system parts. If you see anything that might
keep a safety belt system from doing its job, have it
repaired. Have any torn or frayed safety belts replaced.
Also look for any opened or broken air bag coverings,
and have them repaired or replaced. (The air bag system
does not need regular maintenance.)
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace blade
inserts that appear worn or damaged or that streak or
miss areas of the windshield. Also see ªWiper Blades,
Cleaningº in the Index.
Trunk Release Sensor Check
At least twice a year, check to see if the system is
working properly. Make sure the horn chirps and the
latch releases. Follow the disabling procedure. See
ªTrunk Release Sensorº in the Index.Weatherstrip Lubrication
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth. During very cold,
damp weather more frequent application may be
required. See ªRecommended Fluids and Lubricantsº
in the Index.
Automatic Transaxle Check
Check the transaxle fluid level; add if needed. See
ªAutomatic Transaxle Fluidº in the Index. A fluid
loss may indicate a problem. Check the system and
repair if needed.
At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specified in Part D.
Body Lubrication Service
Lubricate all hinges and latches, including those for the
body doors, hood, secondary latch, pivots, spring
anchor, release pawl, rear compartment, glove box door,
console door and any folding seat hardware. Part D tells
you what to use. More frequent lubrication may be
required when exposed to a corrosive environment.