Leaking Sun Visor 2005 Denali

[SIB-HLR]

Had a heavy rain last night and today noticed a leak showing up on the headliner right where the drivers side sun-visor mount is located. Wet spot is about the size of a half dollar and dripped to the dash and floor. Did not notice until started driving. Any ideas? It was in the driveway on slight incline where front end was higher than the back end.

Thanks,

 

[M.M. 700]

The first thing I would do is check the roof rack. Put pipe dope/teflon tape on the bolts. Silicone around where the roof rack mounts.

Is it the original windshield?
Does it have a sunroof??