OK guys, I need some solid information here.

What, EXACTLY are the changes to the Aveo engine from 2008 to 2009.

I know they call it an Ecotec now, but what is physically different from the E-tec?

ALSO, does the "new" engine still have the ****ty timing belt, or does it have a chain now?

FWIW, I asked the head tech at the dealer and he said they all have chains and you don't have to worry about the engine blowing if the belt breaks. I want to get my facts straight before I tear him a new one.

Thank you.