I associate the quad driver as more of a pcm problem than EGR. But that is in my experience. Having said that, I haven't run into many pcm problems on saturns. I have heard of the egr solenoid being a problem with two of those codes.
With this particular vehicle, I would take a look at the coolant temperature sensor. These are notorious for causing a variety of problems. They tend to crack. IT is a $10 part that is worth putting in, unless you have recently done it.
Wednesday, January 7th, 2009 AT 7:47 PM