Chevrolet 2002 Astro Owner's Manual page 78

When a new vehicle is delivered, the dealer provides the
owner with a pair of identical keys and a bar
-
The bar coded tag has a code on it that tells your dealer
or a qualified locksmith how to make extra keys. Keep
this tag in a safe place. If you lose your keys, you'll be
able to have new ones made easily using this tag.
This vehicle has one
-
double sided key for the
ignition and door locks. It
will fit with either side up.
-
coded tag.
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 keys inside. You may even have to
damage your vehicle to get in. So be sure you
have extra keys.
If you ever do get locked out of your vehicle, call GM
Roadside Assistance Center. See "Roadside Assistance"
in the index.
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