Chevrolet 2001 Impala Owner's Manual page 80

Operation
Pause for about one second, then press UNLOCK again
within five seconds to unlock the passengers' doors.
To lock all doors, press LOCK. To release the trunk,
press the trunk symbol on the remote keyless entry
transmitter. The shift lever must be in PARK (P) for
this to work.
Operating the remote keyless entry transmitter may
interact with the content theft
vehicle has this option). See "Content Theft
System" in the Index.
2-10
Press UNLOCK once
to unlock the driver's
door and to turn on
the interior lamps.
(See "Illumination on
Remote Activation"
in the Index for
more details).
-
deterrent system (if the
-
Deterrent
Panic Alarm Button
This feature allows you to activate an alarm by pressing
a button on the remote keyless entry transmitter. The
ignition must be in OFF or ACC for the instant alarm to
work. When you press the horn button on the remote
keyless entry transmitter, the headlamps will flash, the
horn will sound repeatedly and your interior lamps will
illuminate attracting attention if you need it. The alarm
will continue until one of the following occurs:
D
You press the alarm button on the remote keyless
entry transmitter a second time,
D
the ignition is in ON or
D
an alarm period of 110 seconds has elapsed.
Transmitter Verification (If Equipped)
This feature provides feedback to the holder of the
remote keyless entry transmitter that a command
has been received by the keyless entry receiver. The
-
headlamps and back up lamps will flash on every lock
and the first unlock command, and the horn will 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 Customization
Settings" in the Index).