Sounds like your drain tube is clogged. It's supposed to drain through a
tube and out through the firewall. Maybe the tube is disconnected or
clogged.

The drain tube is either blocker or disconnected.

Up near the passenger compartment, under the truck, there is a tube
that runs from the condenser.  Check that to see if it is blocked.

your A/C evaporator core drain is stopped up. Look for a small rubber
hose on the passenger side firewall.  Take a small object about the
diameter of a section of coat hanger and insert into the hose to
unclog the drain hose.  You should see some water come out. Start
car and turn on AC and let it run a while to verify AC is draining
properly out of this hose.   I would also make sure to dry out the
carpet inside the car.
-----------
Elbert
ask@me.com

There is a drain hose that is plugged.

You are looking for a hose about the size of one of the vacuum hoses in the
engine bay(I'll estimate the diameter to be about 3mm to 5mm), and made of
pretty much the same kind of rubber. It will poke through the firewall
(floor) to the outside.

I had your problem once and found a carpet hairball was stuck inside. It was
sort of a bitch, but I seem to recall pulling the hose into the passenger
comparment and using a short length of coat hanger to push the hairball out.
The bitch part of the job was poking the hose through the firewall again.

What you have is a drip tray under the evaporator. The evaporator generates
moisture that falls into the tray and flows out the hose. Except for where
the drip is flowing to, the rest of your symptom is completely normal.

Someones kicked the drain tube off. Locate and reattach with a dab of
silicon