[1stIDFO]

Today I pulled into my driveway turned the key off pulled it out, and the car didn't miss a beat. I re-inserted the key moved between on and off positions..nothing. Pulled ignition fuse to stop the engine. Then had to take the ground off to get the rest of the electrical turned off,...also just noticed as I got out a metal pin and some plastic piece on the floor? Any ideas? Had this car throw a fit last year and refuse to start.Had to go to a Chevy dealer in little falls, paid an arm and a leg for an ignition cylinder and the labor to have it installed so It'd be a bitch if that was it again...any help would be great