In your first post you said it's immobiliser issue so is the title of the thread now you say it's not, the symptom is like when the engine ECU fails into "no code" status, i thought i explained that to you in private... go with nanocom into the engine ECU - Utility and check it's security status,
i say again
If a vehicle stalls immediately after starting it is possible that it has been immobilised. This means either:
l The ECM was configured as 'No Code' but the ECM is receiving a code at its alarm input pin.
l The ECM received an incorrect code.
l The ECM was expecting a security code but did not receive one at its alarm input pin.