There's some squeaking sound coming from the rear shelf/part of the car. Sounds like when you have something in a polystyrene box and it rubs againt the box and you'll get a irritating squeaking sound. Suspect it's the rear speaker/board/shelf. Used to be when go over bumps/yellow lines can hear the rear shelf rattle but recently even on highway and got dips/uneveness on the road can hear the damn thing squeaking. How and where to check/fix it ah ? UDM pleasure being spoilt by this