I purchased my HHR-SS 2 years ago. It's a 2008, red, black interior. Anyway, a friend was riding with me, and looked in glove box, checking out the owners manual packet and said, oh it's a 2009, I said no 2008, he showed me the manual and it said 2009. Weird, so I later looked and yep, it's a 2009 owners manual. I'm sure someone along the way just ordered a new one or threw it in there, but I see some threads where things do get messed up, could be a late 2008, that got a 2009 manual. It just struck me as weird is all.

 

I don't think there is any factual differences.
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