Chevrolet 2003 Impala Owner's Manual page 74

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(Remote Alarm): Press this button to activate an
alarm. The ignition must be in OFF or ACC for the
remote alarm to work. When you press the remote
button, the headlamps will flash, the horn will sound
repeatedly and your interior lamps will turn on attracting
attention if you need it. The alarm will continue until
one of the following occurs:
The remote alarm button is pressed a second time,
the vehicle's ignition is turned to ON or
an alarm period of 11 0 seconds has elapsed.
a
(Trunk Release): Press the button to release
the trunk.
Operating the remote keyless entry transmitter may
interact with the content theft-deterrent system, if your
vehicle has this option. See Content Theft-Deterrent
on page 2- 16.
Transmitter Verification
This feature provides feedback that a command has
been received by the keyless entry receiver. The
headlamps and back-up lamps will flash on every lock
and on the first unlock command. The horn will also
sound once for every lock and twice for the first unlock
command. Silent operation and other options may
be selected for this feature. See Vehicle Personalization
on page 2-45.
If your vehicle has the optional content theft-deterrent
system, the first time the remote unlock is received,
three flashes from the headlamps will be seen and
chirps will be heard to indicate an alarm condition has
occurred since last arming. See Content Theft-Deterrent
on page 2- i6.
2-5