Ok. I've got a 2010 model. Yesterday, I removed the plastic cowl trim that covers the windshield wiper mechanism. I was just doing some cleaning of the drains under there and removing any stray leaves that had accumulated. Got a good handful of leaves out.
Now. I've read other posts regarding the butyl patch on the 06's. What shocks me is that on mine(and I'm sure other HHR's) that it's just 1 big open hole on the firewall. You can clearly see the cabin filter.
What the heck was GM thinking ? Why is it wide open where anything could fall in there ?
At the least, seems like there should be a fine mesh screen to cover that big hole and keep any debris out. I think I might just mount up my own screen now that I think about it.
Here's a few pics so you'll know what I'm ranting about.