gtzx

So on my auto gt, whenever I start uporhave the the car in gear it idles fine, but when I go from gear to neutral or park, it will surge very low once, then idle fine. Once in a while the surge will drop enough to stall the car, when this happens mySES light comes on for about one driving cycle, then shuts of again. Could this still be the IAC, or is it something else?

contentsunderpressur

You need to get the car to an auto parts store that has a scan tool while the light is on. They'll be able to tell you exactly what's throwing the code.

mvr

or, plug in the xcal2 it says you have in your sig. it will be able to read the code.