Thanks for taking a gander for me! So even if the truck is off and you stick your head back, and open and close the window, no whine? Wonder why mine is so noisy ...I just went out and looked. From the inside it probably does look like yours. But when it's open the opening is really small. From the outside it looks tiny...
But yeah, mine makes almost no noise. If the truck is running and the stereo is on you'd never hear it.