ok, lets start from the top, bought this camaro from a customer at my job, guy warned me the car had a problem starting, that it had something to do with the anti-theft on the car, his resolution was to unplugg the battery the reset the system, and start it, well after i bought the car me and my friend took it to his shop and took a look at it, well turns out he had tons of corrsion built up on the battery connectors, so this solved the problem after we cleaned them,even though it started with no problem the security light and the seat belt and interior lights flashed from time to time as if the was a short somewhere, also i could hear a clicking sound coming from the dash, i go to start it today and nuthing, try to reset the system nuthing. after messing with it for about thirty minutes it finally started. but it shorted out and i havent got it to start again, i've been comparing problem with other forums and thought it could be the BCM any good advice?

 

could be ur ignition switch or ur passlock sensor