Pontiac 1993 Sunbird Owner's Manual page 48

Start:
Starts the engine. When the
engine starts, release the key. The
ignition switch will return to Run for
normal driving.
Note that even if the engine is not
running, the positions Accessory and
Run are L'~n'7
positions that allow you
to operate your electrical accessories,
such as the radio.
NOTICE:
If your key seems stuck in
Lock
and you can't turn it, be sure it is
all the way in. If it is, then turn the
steering wheel left and right while
you turn the key hard. But turn the
key only with your hand. Using a
tool to force it could break the key
or the ignition switch. If none
of
this works, then your vehicle needs
service.