VIN appears with yyyyyyyyyyyyyyyyy?

Hi,

I have a problem on AVEO 1.2 DOHC (year 2010) Hatchback ?
On Easydiag or GM MDI diagnostic, VIN appears with only "yyyyyyyyyyyyyyyy" , it's not normal ?
on ECM...
2 keys (to start engine) are OK (programming). I don't know if ECM or ICU are changed on vehicule.
Do you have any ideas of problem and how can i solve this ?

Passed ECM in neutral mode ?

Thanks by advance for your respond.

Regards.