2000 Camaro SS Starting problem

I have a 2000 SS with 21000 miles on it. 1000 miles ago, the car was a no start. Good battery and the windows went up/down fine, radio, etc. Had car towed to dealer where they replaced the ignition relay and steeering column ignition switch. This morning the same thing occurred. I removed and cleaned the ignition relay and the starter relay under the hood in the relay block. Car started fine and has since. Any suggestions would be greatly appreciated.
Thanks...
Gus

damn gus im sorry nobody has answered this for u yet, did u buy it from the dealership? if so, u may need to take it back to them and have them really take a look at her..thats suspect man....