Oldsmobile 2001 Silhouette Owner's Manual page 88

If you need a new key, contact your dealer, who can
obtain the correct key code.
Your vehicle has the PASS
system. The key has a transponder in the key head that
matches a decoder in the vehicle's steering column. If a
replacement key or any additional key is needed, you
must purchase this key from your dealer. The key will
have PK3 stamped on it. Keep the bar code tag that
came with the original keys. Give this tag to your
dealer if you need a new key made.
2-6
This key can be used for the
ignition as well as all door
locks, the liftgate lock and
the storage compartments.
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Key III vehicle theft
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Any new PASS Key III key must be programmed
before it will start your vehicle. See "PASS
in the Index for more information on programming your
new key.
NOTICE:
Your vehicle has a number of new features that
can help prevent theft. But you can have a lot of
trouble getting into your vehicle if you ever lock
your key inside. You may even have to damage
your vehicle to get in. So be sure you have an
extra key.
If you ever do get locked out of your vehicle, call
Oldsmobile Roadside Assistance. See "Roadside
Assistance" in the Index for more information.
If your vehicle is equipped with the OnStar system with
an active subscription and you lock your keys inside the
vehicle, OnStar may be able to send a command to
unlock your vehicle. See "OnStar
more information.
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Key III"
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" in the Index for