I have a 2006 Supercrew and ever since I bought it, there was a squeak coming from the back right area of the cab. I thought it was something in the door or possibly the jack (took the jack and bracket out - still squeaks), but now it appears like it might be coming from behind the seat in the back right. I can see that the mechanism that opens and closes the rear sliding window is back behind the seat and was wondering if anyone else had any problems like this? I am going to guess I would have to take the back seat out in order to get to this area to see if anything is loose correct?

Thanks in advance