I got the ticking this am as well. Comes from the firewall or back of the motor. I dunno?
At this point, I could care less, I've heard several other people having the same issue.
I bought a new Camaro and it comes with a warranty so I wouldn't have to freak out everytime I thought something was wrong. If the damn thing is going to blow up, it'll be sooner than later. Either way, I figure I got another 99k miles to go to figure it out.
Till then, I'm driving it. Eff the clicking at this point. lmao
-Ivan