I did a search and could not find an answer. After I have driven my GT for at least 20 minutes, stop for a few minutes and then go to restart it, it does not want to start. I have to crank it for about 10 seconds (seems like forever!) before it will start. It has done this on several occasions now. My engine is stock with the exception of a GMS CAI. Any thoughts??

 

I've been monitoring something almost similar, when I restart after being warm, I need to hold the crank a second or two longer. Not 10 seconds, though. 10 second crank sounds like a fuel delivery problem, if you ask me.

 

Sounds like classic fuel pump replacement TSB syndrome to me. Just search this topic and you'll find it. They have to do it under warranty. Pump diaphrams are losing prime and causing the fuel starvation condition.