Matching Transmitter(S) To Your Vehicle - Hummer 2003 H2 Owner's Manual

(Lock): Pressing this button once will lock all of the
doors. Pressing the button again within three seconds
may cause the horn to chirp to confirm that the doors
have locked.
You can choose different feedback options for each
press of the lock button, such as having the vehicle's
perimeter lamps flash and/or have the horn chirp.
See "Driver Information Center (DIC)" in the Index
for more information.
(Panic): When the button with the horn symbol
on the key transmitter is pressed, the horn will sound
and the headlamps and taillamps will flash for up to
30 seconds. This can be turned off by pressing the horn
button again, or by waiting for 30 seconds, or by starting
the vehicle.

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.
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