Ok, have a buddy that has an 06 mega auto stock other than intake and exhaust. When he started is this morning he was having problems. Turn the key on all light in dash come on like normal all lights go off then the engine light starts flashing, it you wait for the engine light to go off it stars fine. If you try to start it before it goes off the starter will turn over like normal a few times but then sounds like it dies down almost like a gasser that isn't get enough gas to fire. Checked for codes by key on and off three times but nothing happened, unless that's not the right way for the newer trucks??? Any ideas on what it could be???

Thanks,
Eric