lack of power

Ok fellow Trailvoyers I got a tough one i need help with. I am having an engine stutter on occasion when accelerating from a stop. It happens only occasionally and intermittently. Doesn't seem related to weather or temperature. And it's only for a quick half second and then drives fine...

ok, So I have an 04 engine after the plunge (Continue to scroll down after the image).. For those who haven't already seen this. Yet remember I have a 2005 model. I took it into Chevy about a few months ago about not having A/c - even after recharging it twice. I also told them that after...