So I noticed a VERY unpleasant smell when I was loading up my trunk to head to KC. So when I got back I did some detective work and found this.
Under the carpet a pool of water had formed.
So I did some sanding and picked up some paint over rust.
Sanded with a wire bristle brush
The paint I used
After the first coat of paint
Then I got a rubber under body coating that is water proof and applied 4 coats of that.
Next I tackled the vent, the foam gasket looked worn and dirty. Got some black RTV.
Then sprayed around it with the underbody coating
After the final coat of underbody coating.
Then I noticed quite a bit of moisture in the driver's tail light. Applied sealant and the next day applied heat.