Chevrolet 1997 Monte Carlo Owner's Manual page 70

When the PASS-Key 1 1 system senses that someone is
using the wrong key, it shuts down the vehicle's starter
and fuel systems. For about three minutes, the starter
won't work and fuel won't go to the engine.
If
someone
tries to start your vehicle again or uses another key
during this time, the vehicle will not start. This
discourages someone from randomly trying different
keys with different resistor pellets in an attempt to make
a match.
The ignition key must be clean and dry before, it's
inserted in the ignition or the engine may not start. If the
engine does not start and the SECURITY light is on, the
key may be dirty or wet. Turn the ignition off.
Clean and
dry
the key. Wait about three minutes and try
again. The SECURITY light may remain on during this
time. If the starter still won't work, and the key appears
to be clean and
dry,
wait about three minutes and try
another ignition key. At this time, you may also want to
check the fuses (see "Fuses and Circuit Breakers" in the
Index). If the starter won't work with the other key, your
vehicle needs service. If your vehicle does start, the first
ignition key may be faulty. See your Chevrolet dealer or
a locksmith who can service the PASS-Key 11.
If you accidentally use a key that has a damaged or
missing resistor pellet, the starter won't work and the
SECURITY light will come on. But you don't have to
wait three minutes before trying another ignition key.
See your Chevrolet dealer or a locksmith who can
service the PASS-Key I1 to have a new key made.
If you're ever driving and the SECURITY light comes
on and stays on, you will be able to restart your engine if
you turn it off. Your PASS-Key 1 1 system, however, is
not working properly and must be serviced by your
Chevrolet dealer. Your vehicle is not protected by the
PASS-Key I1 system.
If you lose or damage a PASS-Key I1 ignition key, see
your Chevrolet dealer or a locksmith who can service
PASS-Key I1 to have a new key made. In an emergency,
call the Chevrolet Roadside Assistance Center at
1-800-CHEV-USA (1-800-243-8872).
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