Chevrolet 2007 TrailBlazer Owner's Manua page 96

Remote Keyless Entry (RKE)
System Operation
If your vehicle has this feature, you can lock and
unlock your doors from about 3 feet (1 m) up
to 30 feet (9 m) away using the RKE transmitter
supplied with your vehicle.
You can program different feedback settings
through the Driver Information Center (DIC).
For more information see Driver Information
Center (DIC) on page 220.
96
K
(Unlock): Press
unlock for the driver's
door to unlock
automatically, the
parking lamps to flash
and the interior lights to
go on. Press the unlock
button a second time
within three seconds to
unlock all the doors.
Q
(Lock): Press lock to lock all the doors.
Press lock again within three seconds and the
horn will chirp.
L
(Panic): Press the horn symbol to make the
horn sound. The headlamps and taillamps
will flash for up to 30 seconds. This can be turned
off by pressing the horn button again, by waiting
for 30 seconds, or by starting the vehicle.
Matching Transmitter(s) to Your
Vehicle
Each RKE 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.