Wow - I have the same problem.
I deal with Saturn of Belleville because of convenience, decent service, and because I used to own an older Saturn (and it's all GM).
I had this same problem with my Sunfire. Once a month, to about one every couple/few months, it will suddenly start to act like it's out of gas (or I say air or water in the gas tank). It teases that it's going to stall and usually does after acting this way for a while. It will restart with a great deal of reluctance, sometimes the first time, sometimes not for a couple of minutes.
I took it to Saturn a couple times and always it was the same thing - the EGR (Exhaust Gas Recirulation) valve. Finally, September 2006 I had them replace it - pretty pricy. It didn't do the stalling/sputtering thing for almost a year. I thought it was fixed. Sometime early Summer it did it again. I took it to Saturn and they said they took the EGR valve and cleaned it (or something - no charge so I didn't analyze it). Then just last week the same thing - this time Saturn wouldn't help me unless I paid a $42 service charge, so I decided to stop going to Saturn. I didn't want to pay for service for an in-warranty part that was defective for the second time (that's another issue). I think this problem is just something that "happens" - maybe a poor timing belt, who knows. Possibly it could have been a recall issue if it happened to more vehicles.
Point being, I think it's the EGR valve as it fixed it for me for a few months. It just seems there's no permanent fix and also won't cause the car to break down permanently so only an intermittent, hour or two long issue.
Monday, August 27th, 2007 AT 1:56 PM