2020 Ram won't start after new pcm install

[BobbyLee]

I have a 2020 ram with a cam and header swap. Installed smart access cable then sent hp the stock tune and ordered a new pcm. The truck does not start at all now. I checked everything I can think of. Need some help

[SultanHassanMasTuning]

see if you can scan it and get throuble codes

[pointofview_365]

This is the second time I've heard of this with the 2020 and cam swaps. Dave Weber at MMX might be able to help with that. It was his 2020 Ram it happened on. It took them a few weeks to figure it out. Give him a call, good guy and always willing to help.

[dlc_racing]

any info on what was the trouble im about to order a couple of new pcms and i sont like surprises like those no start

[N2speed]

I bet it has something to the 4 digit pin code needed on New 2019+ Pcms, If you know someone with Witech that should tell you.