I just got a 2008 G6 GT and I have notice a lurch when sitting at a light, or accelerating. It is very intermittent, but also not good. I was wondering if anyone knows the source of this problem or how to make it stop. I have tried injector cleaner and premium fuel thinking make that would help. Please let me know what to do, I drive 100miles a day to and from work and need to get this fixed.