I am having the issue with the engine stumbling and the "cruise set" light coming on at the same time. Sometimes the CEL flashes just as you describe, but there are no codes. Frustrating <img src="/forums/images/graemlins/angry.gif" alt="" /> Usually a flashing CEL indicates that there is a stored code. Tomorrow I am going to replace the alternator (and serpentine belt while I'm at it) and if that doesn't work, I made an appointment at the dealership on Friday. But, without a code, the dealership has a hard time finding the source. Sorry - no answers - just sharing in your confusion.

Pete