Cadillac CTS 2008 Owner's Manual page 83

Either of the following keys come with the vehicle.
This key is used for the
driver door, ignition, and
glove box.
This key, located inside the
keyless access transmitter,
is used for the driver door,
glove box, and rear seat
pass-through door. See
"Rear Seat Pass-Through
Door" under Trunk on
page 2-21 for more
information.
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