I believe it’s heat related too. The only code I have in my car is actually a P0601 check sum PCM code. I believe is the Pcm is getting too hot. When I take the pcm out and let it cool down and put it back it starts right up every time and the code goes away for awhile until I drive it for some time again. Just to double check the pcm is the part number 12629313 and is in front of the fuse box?

 

Did you disconnect the ECM while the battery was still connected? That may have caused the problem

https://www.obd-codes.com/p0601

thats where it lives , ye

these guys can help you

https://www.fs1inc.com/catalogsearch/result/

 

I was wondering if there was any other trusted sites that I could buy an ECM from. I placed an order with flagship one like 3 weeks ago they said it would take a 1-2 weeks with programming and shipping. It still hasn’t even been shipped I also have seen a lot of bad reviews saying the same thing and that then when they did receive their module it was faulty. So I refunded it I don’t care if the module is already programmed or not I have a place that can. But if anyone can point me anywhere that’s trusted it would be much appreciated.

 

If you can get it programmed, key in the part number and pick up used one from eBay or any other site.

https://store.allcomputerresources.c...-computer.html

 

The code goes away because disconnecting the ECM clears the codes.

In your first post, you suspected the neutral safety. Is this a manual or automatic transmission?