I have a pesky leak when it rains. Water drips from my rear view mirror into the cup holder. I’ve cleaned the sunroof drains and they seem to be working well. No water running down the inside of the windshield and the headliner isn’t wet. Anyone have any suggestions? I’m stumped as to where this water could be coming from.

 

Very Nice rig! i have a 1999 Trailblazer as well!

Check that rubber strip that runs along the top of the windshield for damage, make sure its tight against the glass and body of the truck. alternatively to pin down the source of the leak move the mirror down so you can see behind it, while having someone drench the front end with a hose.