Water in cargo area?

Anybody experience water in the cargo compartment in the rear of your Envoy? My wife has a 2002 GMC Envoy and discovered in the cargo area, underneath the "trap door", the carpeting is completely water soaked! Nothing was stored that could have spilled. We are going to take it to the dealership but was hoping to find out what the problem could be before we get there. (The last thing I want is the dealer to claim its not a GMC problem) Again, no reason whatsoever for that compartment to be soaking wet! John

PLEASE BE SURE TO SEND EMAIL WITH RESPONSE. I DONT ALWAYS MAKE IT BACK TO THE BOARDS. YOU CAN EMAIL ME AT: [email protected]

Thanks!