Headliner ticking/rattle
 

Having trouble getting the dealer to rectify a rattle/metallic ticking sound in the headliner. I'm pretty sure it's in the headliner or possiblly under the C pilar cover because if I put my hand over the headliner close to the passenger side or middle the rattle goes away. I have exhausted the forums for tips and so far this is what I could come up with for potential culprits:
- antenna cable
- bolts under the headliner near the side airbag not tightened
- metal bracket that support the side airbag in the C Pilar

So couple questions...has anyone tried to get up there to tighten/dampen anything under the headliner? I removed the C pilar cover on the passenger side and the headliner clips and there still isnt enough room to clear my hand to get a socket wrench in there without creasing the headliner. Is it possible to shimmy the headliner off the B pilars by just removing the clips and the C pilar cover?

Subbed, sounds like my passenger side super annoying in the morning till I turn the heat on then goes away. Taken the door panel off twice to rectify but couldn't solve it. Maybe the tweeter housing right above the vent? Think that's where I'm trying next

Is you issue near the front or the rear of the car? Mine is near the C pilar (most rear pilar).

Ah sorry I saw pillar and assumed, mine is at the front by the (a?) pillar. Faack in annoying haha