I have inherited a project from my "father in law" and he is now no longer with us.
He swapped a vortec 4.3 of unknown vintage using a painless harness. That harness calls for PCM #16244210. Truck is to the point of ready to fire but the current PCM that he purchased does not have that service number.
1. Is it possible to use a different PCM than what is called for? I do not know if this PCM has been tinkered with.
2. Does HP Tuners support anything like this?
3. Am I looking at swapping the PCM to the 411?
Any help will be greatly appreciated.