???? Hmmmm, it helps if you're not an Ugly MoFo , but I would say the key to getting some @ss is not to be an @sshat . Hope that helps :-)
If you are working on a GM with Pass Key security system and getting intermittent no crank no start, or long crank hard start no start.Make sure the ignition switch doesn't have a small open causing a drop out of ignition voltage and current supply to the pcm.