my 2002 chevy s10 4.3 its not sending current and it wont start what can the problem be please need some acruate answers please

What is not sending current? No crank? or crank and no start?

Make sure battery has a full charge and battery connections all good on both ends. The connections at the battery are fairly easy to check, but check the other ends, also, positive and negative. Check fusible links, where applicable. Check your fuse box. Some fuses are hot all the time, some go hot with the key on, use a test light and check voltage on those fuses. If it cranks good but won't start, have a helper crank it, while you check for spark at the plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse. I don't know what testing you have done? I can only help with testing.