Ok, I know this a Grand Prix forum but I'm putting up a Hail Mary. My wife's 06 Nox suddenly died while driving on the Interstate yesterday. I mean it was driving fine and then nothing. Electrical was fine, just no engine. I tried restarting it but it would turn over and immediately die. After about 30 min of just sitting there it started right up and we drove it 20 miles back to the house. It did it again last night but I was almost home and was able to coast to the driveway. Online research seems to indicate this is a fairly common problem but GM doesn't know what it is. BTW there are no engine codes. The only person on any forum that claims to have gotten it fixed, changed the PCM. So, what do y'all think? Its not the fuel pump. I checked and pressure is good. I was thinking maybe the Crank Position Sensor, but a few people have changed that and it didn't help. Calling all wrenches... any ideas?