2004 CHEVROLET IMPALA ECU

6. To tighten the belt, feed the shoulder belt back into
the retractor while you push down on the child
restraint. You may nd it helpful to use your knee to
push down on the child restraint as you tighten
the belt.
7. Push and pull the child restraint in different
directions to be sure it is secure.
To remove the child restraint, just unbuckle the vehicle’s
safety belt and let it go back all the way. The safety
belt will move freely again and be ready to work for an
adult or larger child passenger.
Air Bag Systems
This part explains the frontal and side impact air bag
systems.
Your vehicle has air bags – a frontal air bag for the
driver and another frontal air bag for the right front
passenger. Your vehicle may also have a side impact
air bag for the driver.
If your vehicle has a side
impact air bag for the driver
it will say AIR BAG on the
air bag covering on the side
of the driver’s seatback
closest to the door.
Frontal air bags are designed to help reduce the risk of
injury from the force of an inating frontal air bag.
But these air bags must inate very quickly to do their
job and comply with federal regulations.
1-51

{CAUTION:
Both frontal and side impact air bags inate
with great force, faster than the blink of an
eye. If you are too close to an inating air bag,
as you would be if you were leaning forward, it
could seriously injure you. Safety belts help
keep you in position for air bag ination before
and during a crash. Always wear your safety
belt, even with frontal air bags. The driver
should sit as far back as possible while still
maintaining control of the vehicle, and should
not lean on the door.
{CAUTION:
Anyone who is up against, or very close to,
any air bag when it inates can be seriously
injured or killed.
CAUTION: (Continued)
CAUTION: (Continued)
Air bags plus lap-shoulder belts offer the best
protection for adults, but not for young
children and infants. Neither the vehicle’s
safety belt system nor its air bag system is
designed for them. Young children and infants
need the protection that a child restraint
system can provide. Always secure children
properly in your vehicle. To read how, see the
part of this manual called “Older Children” or
“Infants and Young Children.”
There is an air bag
readiness light on the
instrument panel, which
shows the air bag symbol.
The system checks the air bag electrical system for
malfunctions. The light tells you if there is an electrical
problem. SeeAir Bag Readiness Light on page 3-32
for more information.
1-53

Programmable Automatic Door
Locks
Programmable automatic power door locks are a
standard feature that is intended to provide enhanced
security and convenience by automatically locking
and unlocking doors.
Programmable Modes
Mode 1:No automatic door lock or unlock.
Mode 2:Automatic all-door lock when the transaxle is
shifted out of PARK (P); no automatic door unlock.
Mode 3:Automatic all-door lock when the transaxle is
shifted out of PARK (P); automatic unlock for the
driver’s door only when the transaxle is shifted into
PARK (P).
Mode 4:Automatic all-door lock when the transaxle is
shifted out of PARK (P); automatic all-door unlock
when the transaxle is shifted into PARK (P).Your vehicle was originally programmed to Mode 4.
The mode may have been changed since then.
To determine the current mode, or to change the
mode, seeVehicle Personalization on page 2-44.
Disconnecting the battery for up to a year will not
change the programmed mode of the programmable
automatic power door locks.
Lockout Protection
To protect you from locking your key in the vehicle, this
feature stops the power door locks from locking while
the key is in the ignition and a door is open.
If a power lock switch is pressed while a door is open
and the key is in the ignition, all of the doors will
lock and then the driver’s door will unlock. A chime will
sound continuously until all doors are closed.
Leaving Your Vehicle
If you are leaving the vehicle, take your keys, open your
door and set the locks from inside. Then get out and
close the door.
2-10

Trunk Assist Handle
There is an assist handle
located on the inside of
the trunk lid toward
the driver’s side of the
vehicle.
Pull down on the handle to lower the trunk lid. Then
close the trunk with your other hand. If the trunk is not
properly closed, the TRUNK OPEN message will
appear in the message center of your instrument panel
cluster. SeeTrunk Ajar Warning Message on
page 3-49for more information.
Notice:Using the trunk assist handle as a tie-down
or anchor point when securing items in the trunk
may damage it. Use the trunk assist handle only to
help you close the trunk lid.
Emergency Trunk Release Handle
There is a glow-in-the-dark trunk release handle located
inside the trunk on the latch. This handle will glow
following exposure to light. Pull the release handle up to
open the trunk from the inside.
Notice:Using the emergency trunk release handle
as a tie-down or anchor point when securing
items in the trunk may damage it. Use the
emergency trunk release handle only to help you
open the trunk lid.
2-12

Arming with the Remote Keyless Entry
Transmitter
Your alarm system will arm when you use your remote
keyless entry transmitter to lock the doors, if the key
is not in the ignition. The light on the radio will turn on to
let you know the system is arming. After all doors and
the trunk are closed and locked, the light on the
radio will begin ashing at a very slow rate to let you
know the system is armed.
Disarming with the Remote Keyless
Entry Transmitter
Your alarm system will disarm when you use your
remote keyless entry transmitter to unlock the doors.
The light on the radio will go off to let you know
the system is no longer armed.
The rst time a remote UNLOCK command is received,
three ashes will be seen and three horn chirps heard to
indicate an alarm condition has occurred since last
arming.
Disarming with Your Key
Your alarm system will disarm when you use your key
to unlock the doors. The light on the radio will go
off to let you know the system is no longer armed.
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. SeeSecurity Message on page 3-49.
If the engine stalls and the SECURITY message
ashes, wait until the light stops ashing 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.
SeeFuses and Circuit Breakers on page 5-103. See your
dealer for service.
In an emergency, contact Chevrolet Roadside
Assistance. SeeRoadside Assistance Program on
page 7-6for more information.
2-16

Heated Outside Mirrors
If your vehicle has this feature, the surface of the
outside mirrors will heat when the rear window defogger
is activated.
Outside Convex Mirror
Your passenger’s side mirror is convex. A convex
mirror’s surface is curved so you can see more from
the driver’s seat.
{CAUTION:
A convex mirror can make things (like other
vehicles) look farther away than they really are.
If you cut too sharply into the right lane, you
could hit a vehicle on your right. Check your
inside mirror or glance over your shoulder
before changing lanes.
OnStar®System
OnStar®uses global positioning system (GPS) satellite
technology, wireless communications, and call centers
to provide you with a wide range of safety, security,
information and convenience services.
A complete OnStar
®user’s guide and the terms and
conditions of the OnStar®Subscription Service
Agreement are included in your vehicle’s glove box
literature. For more information, visit www.onstar.com,
contact OnStar
®at 1-888-4-ONSTAR (1-888-466-7827),
or press the blue OnStar®button to speak to an
OnStar®advisor 24 hours a day, 7 days a week.
A completed Subscription Service Agreement is required
prior to delivery of OnStar
®services and prepaid
calling minutes are also required for OnStar®Personal
Calling and OnStar®Virtual Advisor use. Terms and
conditions of the Subscription Service Agreement can be
found at www.onstar.com.
2-36

HomeLink®Transmitter
HomeLink®, a combined universal transmitter and
receiver, provides a way to replace up to three
hand-held transmitters used to activate devices such as
gate operators, garage door openers, entry door
locks, security systems and home lighting. Additional
HomeLink
®information can be found on the internet at
www.homelink.com or by calling 1-800-355-3515.
If your vehicle is equipped with the HomeLink
®
Transmitter, it 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 modications to this system by other than
an authorized service facility could void authorization
to use this equipment.
Programming the HomeLink®
Transmitter
Do not use the HomeLink®Transmitter with any garage
door opener that does not have the “stop and reverse”
feature. This includes any garage door opener model
manufactured before April 1, 1982. If you have a newer
garage door opener with rolling codes, please be
sure to follow steps 6 through 8 to complete the
programming of your HomeLink
®Transmitter.
Read the instructions completely before attempting to
program the HomeLink
®Transmitter. Because of
the steps involved, it may be helpful to have another
person available to assist you in programming the
transmitter.
2-38

Keep the original transmitter for use in other vehicles as
well as for future HomeLink®programming. It is also
recommended that upon the sale of the vehicle,
the programmed HomeLink
®buttons should be erased
for security purposes. Refer to “Erasing HomeLink®
Buttons” or, for assistance, contact HomeLink®on the
internet at: www.homelink.com or by calling
1-800-355-3515.
Be sure that people and objects are clear of the garage
door or gate operator you are programming. When
programming a garage door, it is advised to park outside
of the garage.
It is recommended that a new battery be installed in
your hand-held transmitter for quicker and more
accurate transmission of the radio frequency.
Your vehicle’s engine should be turned off while
programming the transmitter. Follow these steps to
program up to three channels:
1. Press and hold down the two outside buttons,
releasing only when the indicator light begins to
ash, after 20 seconds. Do not hold down the
buttons for longer than 30 seconds and do not
repeat this step to program a second and/or third
transmitter to the remaining two HomeLink
®buttons.
2. Position the end of your hand-held transmitter about
1 to 3 inches (3 to 8 cm) away from the HomeLink
®
buttons while keeping the indicator light in view.3. Simultaneously press and hold both the desired
button on HomeLink
®and the hand-held transmitter
button. Do not release the buttons until Step 4
has been completed.
Some entry gates and garage door openers may
require you to substitute Step 3 with the procedure
noted in “Gate Operator and Canadian
Programming” later in this section.
4. The indicator light will ash slowly at rst and then
rapidly after HomeLink
®successfully receives the
frequency signal from the hand-held transmitter.
Release both buttons.
5. Press and hold the newly-trained HomeLink
®button
and observe the indicator light.
If the indicator light stays on constantly, programming
is complete and your device should activate when the
HomeLink
®button is pressed and released.
To program the remaining two HomeLink®buttons,
begin with Step 2 under “Programming HomeLink®.”
Do not repeat Step 1 as this will erase all of the
programmed channels.
If the indicator light blinks rapidly for two seconds
and then turns to a constant light, continue with
Steps 6 through 8 following to complete the
programming of a rolling-code equipped device
(most commonly, a garage door opener).
2-39