Jaxxon,
I know this is an old post, but I figured since I just got this done on my 2006 Rendezvous, I would post it for everyone here, and everyone in the future that may need this done.
You are a special case, because you live in Canada. Same here. For the 2006 and later model year, in Canada ONLY, there are a few differences between the Canadian and American model of this SUV. And as you noticed, the PCV valve is one of them. So, this is where is it..
***It is part of the rear valve cover. The entire valve cover has to be replaced to change the PCV valve. As of 2019 prices in Canada, that's about $175 for the part. And like I said, this ONLY applies to the Canadian model and ONLY 2006 and up.
P.S. Another weird difference is that the driver side door window is different for these years as well. And again, only on the Canadian model.. We had to get ours replaced and it took over a month to find one. The Canadian model for the 2006 and up has a slightly different shape than the American model, and than any other year in Canada. Stupid GM..