2001 CHEVROLET IMPALA ECU

2-16 Trunk Release Sensor TrapAlert
System
(If Equipped)
Your vehicle may have a sensor located on the underside
of the filler panel inside the trunk.The sensor is designed to open the trunk automatically.
If the sensor detects motion and a difference in
temperature in the trunk, the sensor will sound the horn
if the ignition is in OFF. There will be three short chirps
and a pause repeated for up to two minutes. After one
minute, the trunk latch will release. If the ignition is not
in OFF, the trunk latch will not release automatically
and the horn will not sound.
To cancel the horn alarm and automatically release the
trunk lid before two minutes are up, turn the ignition
to ON.
Do not cover the sensor with items you put into the
trunk or with add
-on accessory equipment. If the
sensor's field of view is blocked, it will not detect
motion and will not function properly.
Be sure to secure items in your trunk so that they
won't move around and cause the trunk to open.

2-28
3. Press the DISP button to start programming. When
the message PUSH FOB flashes, press and hold the
LOCK and UNLOCK buttons on the first transmitter
at the same time for 15 seconds. A chime will be
heard to verify the transmitter is learned.
4. Repeat Step 3 for each additional transmitter.
The transmitter is programmed now. You can either exit
the programming mode by following the instructions
later in this section or program the next feature available
on your vehicle.
EXIT (Exit Feature Customization Mode): This
feature allows you to exit the vehicle customization
programming. To exit do the following:

Scroll until EXIT appears on the display.

Press the DISP button to exit programming.
A chime will be heard to verify the exit.Passlock
Your vehicle is equipped with the Passlock
theft
-deterrent system.
Passlock is a passive theft
-deterrent system. Passlock
enables fuel if the ignition lock cylinder is turned with a
valid key. If a correct key is not used or the ignition lock
cylinder is tampered with, fuel is disabled and the
engine will not start.
During normal operation, the SECURITY message will
be displayed after the key is turned to the ON ignition
position. See ªMessage Center, Securityº in the Index.
If the engine stalls and the SECURITY message flashes,
wait until the light stops flashing before trying to restart
the engine.
If the engine is running and the SECURITY message
comes on, you will be able to restart the engine if you turn
the engine off. However, your Passlock system is not
working properly and must be serviced by your dealer.
Your vehicle is not protected by Passlock at this time. You
may also want to check the fuse (see ªFuses and Circuit
Breakersº in the Index). See your dealer for service.
In an emergency, contact Chevrolet Roadside
Assistance. See ªRoadside Assistanceº in the Index for
more information.

2-66
The light will be red in the event of an OnStar system
malfunction. If this occurs press the OnStar button to
attempt to contact an advisor. If the connection is made,
the advisor will assist you with steps to take to make
sure that the system is functioning properly. If you
cannot contact the advisor, take your vehicle to your
dealership as soon as possible for assistance.
Safety and Security Services

Automatic Notification of Air Bag
Deployment
-- If an air bag deploys, a priority
emergency signal is automatically sent to the center.
An advisor will locate your vehicle's position, try to
contact you and assist you in the situation. If the
center is unable to contact you, an emergency service
provider will be contacted.

Stolen Vehicle Tracking
-- Call the center at
1
-888-4-ONSTAR (1-888-466-7827) to report your
vehicle stolen. The system can then locate and track
your vehicle and the advisor will be able to notify
the proper authorities.

Roadside Assistance with Location
-- For vehicle
breakdowns, press the OnStar button. An advisor
will contact the appropriate help.
Remote Diagnostics
-- If an instrument panel
light comes on, the center can perform a check of the
engine on
-board computer. An advisor can then
recommend what action needs to be taken.

OnStar MED
-NET -- Med-Net can store your
personal medical history and provide it to emergency
personnel if necessary.

Accident Assist
-- An advisor can provide
step
-by-step guidance following an accident.

Remote Door Unlock
-- To contact the center,
call 1
-888-4-ONSTAR. You will be required to
provide your security information. An advisor will
send a command to your vehicle to unlock itself.
The advisor can delay unlocking your vehicle.
Remote Door Unlock is disabled 48 hours after
the vehicle is parked to maintain the battery charge.

Vehicle Locator Service
-- To contact the center,
call 1
-888-4-ONSTAR. You will be required to
provide your security information. An advisor will
send a command to your vehicle to sound the horn
and/or flash the lamps.
In order to provide you with excellent service, calls with
the OnStar Center may be monitored or recorded.

2-67
Premium Services (Includes Safety and
Security Services)

Route Support -- An advisor can provide directions
or guidance to anywhere you want to go. In addition,
they can help you locate gas stations, rest areas,
ATMs, hospitals, hotels, stores, eateries and more.

Concierge Services
-- The concierge advisor can
obtain tickets, reservations, or help with vacation/trip
planning and other unique items and services.

Ride Assist
-- An advisor can locate transportation
in the event that you are unable to drive.
OnStar System Limitations
Complete limitations can be found on the Subscriber
Services Agreement.
OnStar Service is:

available in the United States and Canada;

available when the vehicle is within the operating
range of a cellular provider;

subject to limitations caused by atmospheric
conditions, such as severe weather or topographical
conditions, such as mountainous terrain;

subject to cellular carrier equipment limitations.Global positioning capabilities used to deliver
OnStar Service will not be available if satellite
signals are obstructed.
OnStar will not function if the vehicle's battery is
discharged or disconnected. It may also be inoperative
if the vehicle is in an accident and the OnStar or vehicle
electrical system components are damaged.
Safety and security services are provided by existing
governmental emergency service providers. OnStar
will use reasonable efforts to contact the appropriate
emergency service provider and request assistance but
cannot promise that they will respond to the call in a
timely manner or at all.Assist Handles
An assist handle above each passenger door can be used
when getting out of your vehicle.
The rear assist handles also include courtesy and reading
lamps. See ªInterior Lampsº in the Index.
Garment Hooks
For your convenience, garment hooks are attached to the
rear trim near the roof of the vehicle.

2-69
HomeLink
Transmitter (Option)
The HomeLink Transmitter allows you to consolidate
the functions of up to three individual hand
-held
transmitters. It will operate garage doors and gates, or
with the accessory package, other devices controlled by
radio frequency such as home/office lighting systems
and security systems.
The HomeLink Transmitter will learn and transmit the
frequencies of most current transmitters and is powered
by the battery and charging system.This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and (2) this device must accept any interference
received, including interference that may cause
undesired operation.
This device complies with RSS
-210 of Industry Canada.
Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this
device must accept any interference, including
interference that may cause undesired operation of
the device.
Changes and modifications to this system by other than
an authorized service facility could void authorization to
use this equipment.

2-72 Training a Garage Opener with a ªRolling
Codeº Feature
If you programmed the HomeLink
Transmitter, but the
garage door will not open, and if your garage door opener
was manufactured after 1995, your garage door may have
a security feature that changes the ªcodeº of your garage
door opener every time it is opened or closed.
To determine if your garage door opener has this ªrolling
codeº feature, press the appropriate button on the
HomeLink Transmitter that was programmed. If the
indicator light flashes rapidly for one or two seconds, then
turns solid, your garage door opener has this feature.
To program a garage door opener with the rolling code
feature, do the following:
1. Program your hand
-held transmitter to the
HomeLink Transmitter by following the steps
provided under ªProgramming the Transmitterº
earlier in this section.
Because of the steps involved, it may be helpful
to have another person available to assist you in
programming the transmitter.2. Remove the cover panel from the garage door
opener receiver. It is located near the garage door
opener motor.
3. Locate the training button on the garage door opener
receiver. The exact location and color will vary
among brands.
4. Press the training button on the garage door opener
receiver. This will activate the training light.
5. Within thirty seconds of pressing the training button,
return to your vehicle and press the programmed
button on the HomeLink Transmitter until the
indicator light flashes rapidly (about two seconds).
6. Release the button, then press it again to confirm it
was programmed to the garage door opener receiver.
It may take more than one attempt to confirm that
the transmitter was programmed.
You may now use either the HomeLink Transmitter or
the hand
-held transmitter to open your garage door.
If you still have difficulty in programming and require
assistance, please call 1
-800-355-3515.

2-93
Door Ajar
United States Canada
This message will appear if the driver's door or one of
the passenger's doors 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.Security United States Canada
This message is displayed to monitor the
Passlock

system.
If the security message is displayed continuously while
driving and stays on, there may be a problem with the
Passlock system. Your vehicle will not be protected by
Passlock, and you should see your dealer for service.

4-26
Winter Driving
Here are some tips for winter driving:

Have your vehicle in good shape for winter.

You may want to put winter emergency supplies in
your trunk.
Include an ice scraper, a small brush or broom, a supply
of windshield washer fluid, a rag, some winter outer
clothing, a small shovel, a flashlight, a red cloth and a
couple of reflective warning triangles. And, if you will
be driving under severe conditions, include a small bag
of sand, a piece of old carpet or a couple of burlap bags
to help provide traction. Be sure you properly secure
these items in your vehicle.