I bet it isn't Cliff. Yes, I have seen this problem before on my 96. Look
very carefully at your Cargo light. I had a very small crack in the lens and
it leaked when parked and the wind was only in one direction.
Steve, is your 96 a reg or club cab?
Reason I ask is I have same issue (wet floor) but have a Club cab and don't
see how water could get from the Cargo/brake light fixture to the front pass.
I have a club cab. It drove me crazy too, but I removed the rear seat, front
seats and the entire flooring. I then removed the side panels in back. I sat
in the truck during a rain storm and discovered water leaking from under the
rear window. I removed the rear window and reinstalled it with sealant as
well, but the leak was still there. When I looked closely, I discovered that
the rear window is mounted inside a double panel that extends right up to
the roof. The outer and inner sheet metal cab panels are spot welded
together as one assembly. However, the cargo light is mounted between the
two panels and when the light leaked, water entered the area between the two
panels and flowed around the window and leaked below the window, initially
appearing as a window leak. In fact, the side of the window that the water
stream appeared on was a product of the level of the truck, so the dampness
would appear on both sides depending on how you parked the truck. The water
would then make its way forward on either side as the center of the floor
panel is raised in the center directing the water to the forward seating
Have same issue on 96 Club cab. Still looking for cause.
Heater core -should smell antifreeze
AC Evaporator tray leaking/drain plugged
Leaking windshield, rear window, around back-up/cargo light
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