I have a 2008 chevy cobalt that I swapped a matching number ecm from another vehicle. The software to change the vin is no  where to be found.  Not even on GMS SPS2 SITE. I want to rewrite the eeprom but even though I have an XP400 I can't get a procedure to follow for that. Getting very dissapointed in AUTEL these days. Countless hours spent on videos emails and wasted time for what was once a simple operation. It's not even that new a car