O8 chevy silverado wont start just cranks

I saw what you replaced. What testing have you done? Make sure battery has a full charge and connections all good. Have a helper crank it while you visually check for spark at the plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse. Any applicable trouble codes? My diagnostics may be slow, but, I usually get there. I haven't looked at your security system, where applicable. Security system can cause a problem.

Ive tested the compression, all good, but when i turn key over not started but on it says i have none. But they tester says other, no codes at all security has been check not a problem. Haven't checked the apark yet tho been busy probably doing today