My poniac firebird want crank and the secerity light comes on. It will crank sometimes and then it will just cut off every time it does this the secerity light is blinking. The batery is good and the altanater is good. what can i do to get it to run.

if you have another key, try using that key. sometimes they will lose their memory

check fuel line input. all wiring. rodents love electrical wires

U have to check the wires or computer

Been there: had broken wiring in the key cylinder -- wouldn't read the 'chip'. Dealer dinged me for a whole assembly, meaning a new key-cut .. and new IGN keys !
Learned later that I 'could' have bypassed the chip-reader with $1.59 of resistors from RadioShack ..

replace fan clutch & thermostat.

it's usually on the front of the engine by crank pulley, cylindrical with one wire coming off it. Points at the crank damper. Some are other places but I'm not sure on this one. Try Googling crank sensor, 97 firebird.

it could be faulty fuel pump or coil pack transistor.

Hello edspring1...the little key chip you mentioned is the onboard security system for your firebird...GM called it the VAT system..it's possible this could be the cause of the no start conditions, sometimes they will reset if you disconnect the negative battery cable for 30 mins.
I really dont think that is your problem though...under the steering pillar...there is a "slider" type ignition switch...meaning...the terminals slide togather to make contact when the key is turned...these darn things get worn to a point they start arching and eventually wont make contact at all...i replaced one last week on a 95 firebird that had the same problem you are describing now.
i'll post a pic of the slider set in position for a tilt steering and non-tilt column....note the difference.
Good luck...i hope this helps...please rate me a fixya.

(from autostalk.com)
I'm pretty sure I know what the problem is, if you have the keys with
the small 'computer chip' on the black plastic part then your car is
equipped with a sensor in the ignition (where you actually put the key
into) that is supposed to be able to sense the key, to make sure its
the real key. In many cases, the wires from this sensor become loose or
faulty and will trip that light.

WHAT SIZE ENGINE