Today I had the ecm back from reprogmamming. I hooked it up to my car jumped into cockpit and the car started like new. I Think this was the most annoying problem ever wtih this car.. Next thing to do is get rid of the security light and install nev rke module to get doors operating with remote controls.. I recommend this procedure to all european chevy owners who has same immobilizer that I had in my car.(suv's. vans, pick-ups etc. european models) If ypur remote control looses it's sychronization with rke module and you don't have 5-digit safety code, this is almost only way to get the car running without new ecu which is quite expensive, at least in Finland( about 1500€)