Windshield Drain Holes?

[Doppleganger]

After pulling my windshield, I found alot of heavy surface rust underneath it. Was odd to me because the whole truck is so clean otherwise. There looks to be a drain hole (?) in each lower corner about the size of a pencil. As I have found with other cars I had, someone in the past replaced the windshield and used a ton of mastic, plugging these holes and making the mess I have.

What I'm wondering (since I dont remember ever seeing a square without the glass)- are these drain holes or rust holes?

I pulled the dash out last night and found quite a bit of surface rust between it and the windshield lip too. Of course no paint under there either - all just thin primer. Looking forward to having this whole thing stripped down and sealed.

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[Termite_Delight]

Yes, they are drain holes.

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You can see one in the picture.

 

[yevgenievich]

They are drains. If using urethane to set the windshield, can be deleted. Otherwise should keep open path for water to drain down.

 

[Doppleganger]

I used to run into this with old Volvos. Could pick up a lifetime GA car - super clean. Pull the windshield and it was a mess. Always full of mastic. The fella that does my windshields is better versed in this than others I have known. He keeps them clean.

Thanks fellas!