Immobilizer Operation - GMC 2010 Sierra Denali Owner's Manual

®
PASS-Key III+ Electronic
Immobilizer
See Radio Frequency Statement on page 8 20 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.
3-20
®
III+ (Personalized
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.
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When the PASS-Key III+ system senses that someone
is using the wrong key, it prevents the vehicle from
starting. Anyone using a trial-and-error method to start
the vehicle will be discouraged because of the high
number of electrical key codes.
If the engine does not start and the security light on the
instrument panel cluster comes on when trying to start
the vehicle, there may be a problem with your
theft-deterrent system. Turn the ignition off and try
again.
If the engine still does not start, and the key appears to
be undamaged, try another ignition key. At this time,
you may also want to check the fuse, see Fuses and
Circuit Breakers on page 6 114. If the engine still does
not start with the other key, your vehicle needs service.
If your vehicle does start, the first key may be faulty.
See your dealer/retailer who can service the
®
PASS-Key III+ to have a new key made. In an
emergency, contact Roadside Assistance.