I've noticed since buying this car a few weeks ago that there are all kinds of rattles inside the interior. Obviously no big deal with the radio on, but just seems like more than I'm used to out of other models. Mainly sounds like the plastic creaking a bunch or things a little loose over time. Is there any known set of things that will do this from the interior, and any known ways to help it out a bit? Or is it just the overuse of plastic at that point in time in GM's history?