I had po501 vss code replaced it, and still won't start?

Hello, a VSS code will not cause a no start. Replacing cam and crank sensors seems like it wasn't necessary. I've never seen a case where those have had to be replaced, especially together. Do you have reason to believe the anti-theft system is engaged? Are you using proper keys programmed to run the vehicle? A fuel pressure gauge is necessary to properly check fuel pressure. Keep in mind that fuel is flammable and should not be handled improperly. I hear you have done a lot of different things but I'm not hearing that you've used a proper GDS diagnostic tool (or equivalent) to test or monitor any component function, and haven't used a workshop manual and wiring diagram to circuit test components, nor have taken a real fuel pressure test. You really need some professional help. www.repairpal.com/repair-shops