Have any of you had a hard to find popping like noise coming from around the rear window? I can't tell if it is the latch for the slider or the window seal. I have oiled and greased the latch and can't find anything to tighten up on it but it seems to be worse when it is colder and going over bumps in the highway. Thanks

 

Sometimes my rear seatbelt latch will hit the side post..trying wrapping a rag around yours and see if it cures the sound..