I have had my G6 for quite a while and I have always liked the little thing. Lately, when I go to start it, it just cranks and tries to turto start, but it dies. I have to start it and Rev it up right away for it to start. I've read up on this problem and no one can figure it out and can't get it to stop. They have changed the fuel pump, intake manifold, intake valves, clean the fuel injectors, and ect. Does anyone else know what the problem is? I can't figure it out.