Crank no start? CRANK NO START I HAVE 12V TO CRANK AND CAM SENSOR?

Okay, I have an 8.1 Vortec then it’s been one and a half years since it didn’t start because it had injectors to do, but it was starting and 6 months ago. I tried to start i, it started for like 5 seconds holding the accelerator and a rough then it turned off and week went by I tried to start it and after 20 key cycle it started rough like 3 seconds holding the accelerator then it no longer starts since jai 62 PSI of continuous fuel pressure 12v to coil piece new: spark plug, coil, spark plug wire, air filter, fuel, fuel filter. Injector. I have 12v to crank and cam sensor and to crank signal jai 5v I don’t know if it’s normal I think it’s 10v but. I need help, it has to start. I think it’s the computer that’s not sending the 5v signal to the coil because I didn’t have time to see if I’ve has spark. The only code appeared because it’s not the right BCM but yet it started super well with it suddenly no because I’m changing the interior to make it luxurious LTversion brief. Grounds are good no resistance. The only dtc code is p0711-p0722-p0732-and full of other code that makes no sense and I have:u1041u1096 yet when I installed the BCM there was no code and it started super well and it is not a problem of pass lock because it is already programmed I do not have the code in the dash I do not have the symptoms of it.

That is not the pass lock security. I’ll try starting fluid and see if I have spark. Tomorrow my Noid injector tester arrive so I’ll check if I've injector pulse, but I have a question for you the Noid tester does it light on with 12v only cause I’ve seen that injector can receive only 6 volt. So don’t enough of voltage to pulse and start the vehicle if is the case what cause that low voltage the ground is solid. How to check the voltage with multimeter the voltage at injector.

Okay, I just wanted to be sure concerning testing injector. I checked yesterday I have spark no injector pulse 0v with ground at injector harness with the switch at on. 12v with the battery ground so no short in injector harness. And I have spark 62 PSI fuel pressure and I don’t have the pass lock light when cranking.

I have no ground crtl from the pcm but I get 12v cause if I put neg of my multimeter on neg of my battery I get 12v. I have crank cam maf signal good ground 12v no passlock security light on what it could be. In more this truck 1 1/2 years ago was running perfect and this truck is a project so he haven’t see the road in 5 years so what can it be if the sensor or good and changed the bcm about a year ago it wasn't the right one but I haven't got any code and he was running good. And 6 month ago that hell has begun crank no start no injector pulse but have 62psi fuel pressure and got spark. So how can he not start one day pow like this. I don't have a scope but I've done every this and he pass I just don't have the neg pulse to injector

How can it be my PCM if my has running about 24 hours in 3 years seriously I’ve another Silverado with 350100km on it with stock PCM and it work perfectly I’m sure it’s another thing the PCM decide to not ground pulsing the injector.

No injector pulse and no spark.

12v to injector just no gnd signal from PCM without short in wires between them.

No pass lock security light on.

I get spark, just its the ground injector pulse I’m not getting?

Can you help me think about it PCM goes bad while the truck has running like 12 hours in 3 years it’s impossible and I want a fisable solution.

You’re telling me that by unplugging the injectors and coils this will get my ground pulse back on my injectors.

Seriously, I’m getting spark but an inside coil short first how can inside of the coil without running I know an engine sitting for a while can wear a bit but not much like this and can you put another mechanic in this case because it has been two weeks of searching and no solution.