Since the day I sat in my car I hear a small rattle. Its almost like a cracking noise of styrofoam. I think its because its new, I have narrowed the noise down to the insulation between the windshield and the dash. Am I wrong and does anyone else notice this??

 

Not that noise, the only one I have is something resonating either under the dash or under the hood at low speed. Annoying as I have not been able to isolate it, but I have not given up. I noticed it after installing my grounding kit so it is probably something I did.