Pass-Key Iii+ Electronic Immobilizer; Testing The Alarm - GMC 2010 Yukon XL Denali Owner's Manual

Testing the Alarm

To test the alarm:
1. From inside the vehicle, lower the driver's window
and open the driver's door.
2. Activate the system by locking the doors with the
power door lock switch while the door is open,
or with the RKE transmitter.
3. Get out of the vehicle, close the door and wait for
the security light to go out.
4. Then reach in through the window, unlock the
door with the manual door lock and open the door.
This should set off the alarm.
While the alarm is set, the power door unlock switch
will not work.
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 6 107.
If the alarm does not sound or the headlamps
do not flash, the vehicle should be serviced by
your dealer/retailer.
3-22
®
PASS-Key III+ Electronic
Immobilizer
See Radio Frequency Statement on page 8 19
for information regarding Part 15 of the Federal
Communications Commission (FCC) Rules and
RSS-210/211 of Industry and Science Canada.
®
PASS-Key III+ Electronic
Immobilizer Operation
Your vehicle has PASS-Key
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.
The security light will come on if there is a problem with
arming or disarming the theft-deterrent system.
®
III+ (Personalized