Immobilizer Operation - GMC 2012 Sierra Series Owner's Manual

2-12 Keys, Doors, and Windows
It activates only if you use the
power door lock switch or the RKE
transmitter. The vehicle can be
started with the correct key if the
alarm is set off.
To avoid setting off the alarm by
accident:
If you do not want to activate the
theft-deterrent system, the
vehicle should be locked with
the door key after the doors are
closed.
Always unlock a door with the
RKE transmitter.
If the alarm is set off, press unlock
on the RKE transmitter or place the
key in the ignition and turn it to
START.
Testing the Alarm
To test the alarm:
1. Lower the driver window and
open the driver door.
2. Press lock on the RKE
transmitter.
3. Close the door and wait for the
security light to go out.
4. Reach in through the window,
unlock the door with the manual
door lock, and open the door.
This should set off the alarm.
If the alarm does not sound when it
should but the headlamps flash,
check to see if the horn works. The
horn fuse may be blown. To replace
the fuse, see Fuses and Circuit
Breakers on page 10 47.
If the alarm does not sound or the
headlamps do not flash, see your
dealer for service.
I n f o r ma t i o n P r o v i d e d b y :
Immobilizer
See Radio Frequency Statement on
page 13 22 for information
regarding Part 15 of the Federal
Communications Commission (FCC)
rules and Industry Canada
Standards RSS-GEN/210/220/310.

Immobilizer Operation

This vehicle has PASS-Key
(Personalized Automotive Security
System) theft-deterrent system.
PASS-Key III+ is a passive
theft-deterrent system.
The system is automatically armed
when the key is removed from the
ignition.
The system is automatically
disarmed when the key is turned to
ON/RUN, ACC/ACCESSORY,
or START from the LOCK/OFF
position.
You do not have to manually arm or
disarm the system.
®
III+