Hummer 2007 H3 - Manual (Page 90)

LOCK: Press this button to lock all the doors. The
parking lamps may also flash and the horn may
chirp when this button is pressed.
If a door is open or ajar when the lock button is
pressed, the doors will lock, but the theft-deterrent
system will not arm until the open door is closed.
You can program different feedback modes
through the Driver Information Center (DIC).
To program the feedback modes, see “Remote
Keyless Entry Feedback” under DIC Controls and
Displays on page 192.
L (Panic): Press this button to make the horn
sound and the headlamps and taillamps flash
for up to 30 seconds. To turn them off, do one of
these three things: wait for 30 seconds; press
the panic button again; or start 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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