Quote Originally Posted by bluegtp91 View Post
Flashing SES light is a P0300...which is a random misfire code. I wouldn't be beating on it at all and get those plugs/wires changed ASAP...remove the coils and clean underneath them just to insure a good connection to the ICM.

Didnt know that thanks alot. By the time I got it to Advance Auto it was just a steady light and just read #3 misfire. I havent beat on it since it started except the one more time to see if it was just a fluke. You have any recomendations for what to clean under the coils with. I got some electrical connection cleaner or is this just a wire brush job. So when Im WOT and its flashing that means all the cylinders are acting up or just thats when #3 is being a pain? You guys are a huge help.