viberation noise

if only one window is down it will make a weird noise. :)

try opening another window & see if that works. if only one window is open you'll hear a weird noise. hope that helps :)

there is nothing wrong with the car- when you open the window you change air flow- it will still do it some with 2 windows open (I drive one).

when I start my gm terrain it makes a rattling noise what could it be

It could be an American car