Water leaking under dash!?

My 1998 Z71 leaks under the dash when it rains or I wash the truck.

It is always on the passanger side right around the fan motor and drips right at the top of the floormat's right side.

I have tried to figure out where this is coming from with no luck.

Any suggestions?

Thanks!

I have the same problem, sometimes. I think someone said it is the seal around the fan motor or a/c or something. It is behind the coolant recovery bottle on the firewall. do a search with some key words and I'm sure you'll find the post. Good luck.

I am having no luck with the search.

Anyone have a link?

Thanks

Btt