Pulled the driver's side edge of the headliner on my '02 F-150 XLT extender cab to chase a water leak and discovered the sunroof drain pan is leaking in a couple of spots. Guess I need to drop the front half of the headliner and try and seal the drain pan with silicone. How do I remove the headliner from around the sun roof?

 

http://www.f150forum.com/f4/removing-headliner-78036/

 

Thanks!

 

I'd see if the sunroof drain is working properly before I pull the headliner

 

Please update when you find out the problem. I suspect my sunroof gutter has failed as well.

 

Turns out the drains (two front and two rear) are all clear. The corners of the drain pan itself were leaking, which I resealed with silicone. I can also see small daylight along the back of the glass seal, so will be replacing that as well.