My girlfriend owns a 2002 Sunfire, and she said that a couple of times it has stalled at idle - before the engine has warmed up. Most recently, she was unable to restart the car for a few minutes afterwards. I have been unable to get it to stall out when I've driven in. What should I be looking at? Other than the few stalls my girlfriend has experienced, the car runs perfectly fine. No CEL, no rough idle, nothing out of the ordinary.

2002 Sunfire
175k miles
2.2L Ecotec
4spd Auto

Check the vacuum line just in case maybe. Was the problem on my z24 couple weeks ago. Hope this helps

It could also be the throttle body sensors as well.