Hi, everyone got an 07 Chevy cobalt ls with an issue with cam sensor after being replaced with 3 different sensors now engine will roll over but won’t fire and code keeps coming up even after the sensor has been replaced. Any ideas

 

2.2l ecotec second engine in it now ran fine till after work got in it to go home and engine would just crank but wouldn’t fire ended up towing it home and it’s sat in my barn for 2 years. Everything on the engine is stock besides cold air intake and k&n air filter. I would say the sensors probably not even bad seeing I’ve changed it with 3 separate sensors now and same issue. Checked grounds, fuses, wiring harness only thing I can think it could be at this point is the silver computer I front of the fuse box but I could be wrong. Need to go test continuity from sensor wires to that computer but that’s only thing I haven’t tested so far. What other issues could stop it from actually firing. Oh and checked spark plugs and made sure it was getting fuel I’m at a loss for what could actually be going on at this point?