Chevrolet 2002 Tahoe Owner's Manual page 91

Your vehicle has one
-
double sided key for the
ignition and all door locks
as well as the spare tire
hoist lock.
Your vehicle may also have
a key that locks and unlocks
the center floor console
only (if equipped).
If you ever lose your keys, your dealer will be able to
assist you with obtaining replacements.
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 the
GM Roadside Assistance Center. See "Roadside
Assistance" in the Index. 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" in the Index for more information.
2-5