2004 4.3 chevy truck cranks but no fire at coil

Make sure battery has a full charge and connections all good. I don't know what testing you have done? Key on, do you have primary voltage at ignition coil, pink wire, fuse protected, you can use test light to check for voltage. You can also check voltage at pink wire going to ignition module, it also is fuse protected. Engine cranking do you have proper fuel pressure and fuel injector pulse? Any applicable trouble codes?

theres a pressure sensor below the dist for oil and fuel no oil no fuel to run it has 3 wires