Warranty. It is a faulty fuel pump. We have had ours replaced twice on our '09 Scg as well. Get it in to the dealer and documented before your warranty runs out.
What is really strange is that we have both an '09 Scg and an '09 R, and the it happens on the Scg and not the R. I haven't looked to see if the part numbers for the fuel pumps are the same or not. If they are, I think it is a wiring harness problem. I have read quite a few times of people having the exact same problems, but all of them are Lightnings, I have never heard of a Firebolt with this problem.