@rjg2000, I just watched one of those short videos, tick tock or something, It wouldn't let me embed the link or video. but the guy was getting water intrusion in the rear of his truck though the pressure vents in the back of the cab. His complaint was the musty smell. He ran a hose on the back of the cab with the rear seats out and water just poured through the pressure vents. They were stuck open, claimed it was a common problem when not installed right. Something to look into if they think it's water problems. Vents are huge on these trucks.
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