Drivers Side Water Leak ??

[bojanglespa]

Rained all day today, parked in driveway. Entered truck and noticed some water on weather tech mat below e-brake and pad on ebrake was wet. Felt up under lip of bottom of dash just above e-brake and it was wet. As soon as I drove away a small amount of water ran from under dash in that spot and onto the mat as I accelerated and turned. What would be most logical cause for this??? WINDSHIELD? Sunroof Drain? Any ideas that are quite common. Never noticed this in the past until today. Once rain stops will try to investigate further but may be tough to see directly.

 

2017 Sierra Denali 1500

[rav3]

Most common place that I've seen is the shark fin antenna. Several videos on YouTube. 

[bojanglespa]

Just pulled off "A Pillar" cover and wet from top to bottom, also noticed a small stain on headliner in corner. Removed shark fin and sealed around the hole and reinstalled.