05 tahoe weird noise when driving in rain

[blake711]

I have an issue with a 05 tahoe I recently purchased. When ever I drive it in the rain it makes a very weird clicking or popping sound. It sounds like its coming from the dash or windshield. I am having no luck narrowing this down. Anyone got an ideas or know of any known issues? Its an 05 Z-71 4x4.


Thanks.