Can anyone tell me what holds the headliner up? Is it glued? My headliner only is sagging a little aroung the sunroof hole. The wind coming in probably what made it come loose. It is sagging very little but I want to fix it before it gets worse. I think the right kind of glue will fix it. The headliner is not coming apart, it is just loose from the ceiling. Help is appreciated. Thanks TexasCadillac :)

There are repair kits for headliners and your local autoparts store... At my job we use 3M adhesive spary all the time, it dries quick and its easy to apply.

Young Deville, thanks TexasCadillac

Elmer's Spray glue works very well too!