I have a 2014 ram 2500, installed a "rebuilt" PCM, now truck wont start, Have a blinking Security light on dash, anyone know how to clear or reset it ? already tried doing the lock doors and cycle key to "Run" 3 times, didnt work ! Put old PCM back in and still wont start anyone been thru this to help ?

 

You want to post in the Fourth Gen ram section.