Official NBS 4.3v6 to GEN 3 V8 swap Guide

[PitchBlackC3]

No, the VATS relearn is something you can do yourself.
key on, crank (no start), wait 10 minutes (600 seconds) (not a second less) with key on run, shut key off, replete 2 more times. the 4th crank try it will start (if it was a VATS issue.)

I'm not entirely convinced this is your issue though since you say the starter isn't cranking. Generally VATS issues give a crank and start then immediately die.

Try it though, because your VATS will have to be relinked since you swapped PCMs. It is something you will have to do anyway.

[b18c1turboedek]

Awesomel you have been a great help man..



And for the post above. I never read anywhere about the vats system in this thread. I have read as much as I could also. I'm just new too the Chevy world.