Wet floor after rain

[vision170]

Hello,

My 2002 Sonoma (3 door extended cab) leaks when it rains. The lining beneath the rubber carpet is soaked through. It appears to be a chronic problem, some rust has formed and the wire harness gets wet. Just bought the truck used, the guy had an air freshener in it. Now I know why. Any thoughts would be appreciated. Thanks!

[Blue Bowtie]

What part of the floor is wet?

[vision170]

The driver's side floorpan, from the seat mounts all the way forward to the base of the firewall. Pulling back the pad and matting reveals standing water in this area.

[bluval721]

Maybe this will help. I had a similar problem on my 96 extended cab Sonoma (2 door). The difference was that my carpet was wet from the seat back to the rear wall, passenger side. There is a fill strip along the edge of the roofline (over the rear windows) that covers the weld that joins the wall and roof. There was a pinhole in the weld, which allowed water to drain along the B pillar moulding (inside the truck), directly onto the floor. The carpet then wicked it up and spread it around. A dab of RTV sealer fixed the problem.
To find a problem like this, you may have to spend some quality time with a garden hose.