GMC 2003 Sierra - Manual (Page 105)

Theft-Deterrent Systems
Vehicle theft is brg business, especially in some cities.
Although your vehicle has a number of theft-daterreni
lealures, we knoiAi that nothing we pul on it can make il
impossible lo steal. Howsvef. there are ways you
can help.
Content Theft- Deterrent
Vour vehicle itlay be equipped with a contení
theit-PeteTrent ajanri system.
With this system, the
security light will ffash as
you open the door (il
your ignition is otf). 10 1st
you know lhat you are
aclivaling the system.
This message remincls you Ic activate the tbeft-deterrent
system. Here's how to do (L
1. Open the door.
2. Lock the door with the power door lock switch or
1tie remote keyless enify transmitter. The security
light shouEcJ come oo and hash. Il using the
remote keyless entry transmilter, the door does not
need lo be 0F>en.
If Ihe delayed locking feature is active, ihe alarm
will not be activated until ati doora are dosed
and the securily light goes off.
3. Close all doors. The security light will stop flashing
and stay solid- The light should go off after
approsimatelv 30 seconds. The alarm is not armed
until the Eiecurlly light gees off.
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