Has anyone else with a GXP or any Bonneville for that matter noticed any trunk leaks from the bottom? I know that when the trunk is opened water tends to run off the lid into the trunk, but that is definitely not the case here.
Yesterday I drove through pouring rain in Ontario returning back to Michigan from the holidays. While unpacking my trunk I noticed everything was damp on the bottom. When I looked in the trunk the maton the bottom was soaking wet. It seemed to be the wettest in the back left. After only a quick look I couldn't see anything obvious but I didn't want to pullthe whole mat out. It obviously hasn't been to a dealer yet since I just found it yesterday.
I couldn't find any damp spots except for the floor of the trunk, so I think water must somehow be splashing up from below rather than coming in from above.
I bought the car last April and it now has 13,000 miles and this is the first I've noticed this, although that doesn't necessarily mean it just started.