[sick472]

Great documentation of the drain holes!

The one observation that always pops into my mind when contemplating if I should put on another coat of paint in areas that are not exterior to the vehicle is that in all the rusty places I have sand blasted, treated with electrolysis, wire-wheeled, sanded, ect....the places where the original paint had runs...it was well preserved underneath it. I always add the second coat, maybe a third coat.

GM OEM procedures seem to have been...no paint where hidden and the lightest coat possible in others. Heck, I've seen F@rds with no paint on the under belly and others with just primer and overspray.