Yesterday bought a 99 camaro drove it appox 45 miles home. Went to go back to town and it died on the highway got it cranked again and brought it home and it wouldn't start again. Had it towed to mechanic he had trouble getting the computer to communicate so he cleaned it and it could read it there were no codes. He went over and tried to crank it, it started right up. Thought maybe it would be alright then he shut it off and on a few times and it acted up again and hasn't started since. Still not showing any code, holding fuel pressure fine, talked with chevy techs and still can't find what is wrong with it. Any ideas?

 

Bad alternator/battery, plugs, wires, fuel filter (could have some gunk/intermittent plugs)... Hard to say without some diagnosis -- ya got to start somewhere -- try the easier stuff first...