Chevrolet Aveo 2007 Owner's Manual page 89

When a new vehicle is delivered, the dealer
removes the key tag and gives it to the first owner.
The tag has a code on it that tells your dealer
how to make extra keys. For vehicle security, keep
the key tag in a safe place and also record the
key number somewhere other than inside of
the vehicle. If you lose your key, you will be able
to have a new one made easily using the tag.
One key is used for the
ignition, the doors and
all other locks.
Your vehicle may have an electronic immobilizer
designed to protect your car against theft. If
so, only keys with the correct electronic code can
be used to start the vehicle. See Immobilizer
Operation on page 106 for additional information.
Even if a key has the same profile, it will not
start the engine if the electronic code is incorrect.
If you need a new key, contact your dealer
who can obtain the correct key code. Also see
Roadside Assistance Program on page 408.
Notice: If you ever lock your keys in your
vehicle, you may have to damage the vehicle to
get in. Be sure you have spare keys.
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