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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