Hi all I have had a similar problem with my 2005 Aveo. I checked the cam belt, I checked for spark, I checked for fuel and even the compression! The compression was 400 kPa. All checked out and nothing is wrong. I swapped the crank sensor yet no luck. After 3 day of frustration and no answer I started playing with the cam timing. After adjusting the crank pulley 90 degrees from its origanal mark on the cover over the cam belt the car started??????????? I can not explain it but she is running like a dream.

Regards

Wimpie