Service manual does not state which one it is. But the Training class covered this heavily. You could become a GM tech and take the training course. Sorry that's all I got for now.
You joke but that could be a possibly be a future career for me (cross fingers). Is it too much to ask for GM to give a definitive answer on this? If you're a GM tech perhaps you could ask to disclose the information relating to this. I'll continue to research this until I get a solid answer.
I hate it when I run across information like this:
Unfortunately I've run into a lot of people who while well intentioned, give out completely wrong information."It should be noted that all Zetec engines (2.0 DOHC) are NOT interference engines. They are listed as interference in most tech manuals but this is wrong. All Data recently corrected this mistake. There are deep reliefs cut into the top of the piston to clear the valves when they are fully extended. There will be no valve damage if the timing belt breaks on a Zetec engine."
That could true, but the valves might not need much clearance to operate.I'm no engineer, but my guess would be extremely tight tolerances.
Take a look at the picture under the "Performance" paragraph in XR's blog. There is literally no room in the cylinder except in the piston well when the piston is at TDC. It almost looks as if the valve reliefs are needed just to clear the valves at TDC. I just don't see this as being a non-interference engine.
What to Expect - The 2014 Chevy Cruze Diesel - The Xtreme Revolution
We're not dealing with a top-secret aircraft here. Anyone have a Cruze Diesel they want to offer up to science? I'd do it, but I have to get to work. :tempted: