need help!!

[df2x4]

This is not so cheap but has good reviews. Around 260.00 to totally bypass the system and not just the key etc. https://newrockies.com/

I've seen this too, but for that price I'd add another $100 and get the PCM tuned by Black Bear or someone comparable.

 

[98vortec]

i swapped known good passlock module and sensor and ecm still same ****.... just got the truck couple weeks ago started ran fine no issues i did intake gasket and it started ran fine i then went to do the timing reset with scanner then this pproblem happened i looked under dash looks like a meth head got a hold of this truck wires spliced and cut all under dash....

 

[Oldblue98]

i swapped known good passlock module and sensor and ecm still same ****.... just got the truck couple weeks ago started ran fine no issues i did intake gasket and it started ran fine i then went to do the timing reset with scanner then this pproblem happened i looked under dash looks like a meth head got a hold of this truck wires spliced and cut all under dash....

ECM flashed to your vin ? I feel your pain I hate a chimpanzee with a pair of wire cutters and a roll of black tape =/ Or even worse scotch loks