GMC 2005 Savana - Manual (Page 85)

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(Panic Alarm): The remote keyless entry transmitter
comes equipped with an instant panic alarm. To use the
alarm, press the horn symbol while the ignition is turned
off. The horn will sound and both the interior and exterior
lamps will flash for up to thirty seconds. To stop the
instant panic alarm, press the panic button again, wait for
thirty seconds, or start the vehicle.
j
(Cargo Door): Press this button to unlock the cargo
doors only.
Matching Transmitter(s) to Your
Vehicle
Each remote keyless entry transmitter is coded to prevent
another transmitter from unlocking your vehicle. If a
transmitter is lost or stolen, a replacement can be
purchased through your dealer. Remember to bring any
remaining transmitters with you when you go to your
dealer. When the dealer matches the replacement
transmitter to your vehicle, any remaining transmitters
must also be matched. Once your dealer has coded the
new transmitter, the lost transmitter will not unlock your
vehicle. Each vehicle can have a maximum of four
transmitters matched to it.
Resynchronization
Resynchronization may be necessary due to the
security method used by this system. The transmitter
does not send the same signal twice to the receiver. The
receiver will not respond to a signal that has been
sent previously. This prevents anyone from recording
and playing back the signal from the transmitter.
To resynchronize your transmitter, stand close to your
vehicle and press and hold the lock and unlock buttons
on the transmitter at the same time for seven seconds.
The door locks should cycle to confirm synchronization. If
the locks do not cycle, see your dealer for service.
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