Ok. Well I'm pretty sure it's my window because when I'm driving I can hear something like air getting through a very little crack. And it's only around 45 mph and up. But this morning when I got it. I had a decent amount of water on my windshield on the inside. It rained last night. But it's also around 40 degrees this morning. Why I said truck in the post was because I did back into something and got a lot of stuff back there replaced. So I don't know if it is coming from there either. Is there something I can buy to fix the leak on the window though. I have a 2012 gt premium.