Yesterday, I started the Camaro to let it run (which I do from time to time since I don't drive it much) and after running for 3- 5 mins, it suddenly shut off and will not start again. I'm getting a SES light and the engine tries to turn over, but nothing beyond that. I have a 12 disc changer in the car that I hear it shuffling discs, which leads me to think it's something electrical. It's not the battery, as the car tries to start though I did try jumping it with my other car to be sure.

Any ideas? Should I get my hands on a scanner to check for thrown codes to narrow down the exact problem? Thanks!