I have an 06 Impala ltz and have had water leaking in when it rains. It leaks where the sunroof buttons are and down by the parking break. I'm pretty certain the drains are clogged however, I cannot find where the drains are located. I looked in the corners but there is a mesh cover thing that I think is blocking them.

I'm wondering if the sunroof is supposed to seal and it has just gone bad, or if there is a drainage system and it is clogged. If there is a drain system where do I find the drains and how do I get them unclogged?

 

Let me google that for you