Alternate answer to wet trunk

[edrin]

I was completely unaware that water was accumulating in the spare tire well of my 2002 Chevy Prizm 4-door sedan (metallic blue-green) until a frigid day one February morning when I found that a tire had gone flat overnight. When we lifted the liner to get the spare we found that it was frozen in place due to a couple of inches of water that had accumulated and frozen solid in the well! The car had to be towed so I could get the tire repaired. I later took it to a body shop, where the mechanic showed me that I had drainage holes with plugs under the spare, and he drained the water out. We replaced the plugs and he suggested just keeping an eye on it before trying to diagnose where the water was coming from (he didn’t charge me anything). That was years ago. I check it regularly - it has never reoccurred, and I have no idea what caused the problem in the first place.