Is My Cuda Killing Me?
Any rusted out holes in the trunk? Are all the floor plugs in the car? Check the one in the spare tire well. If they're all in place try getting into your trunk with a hammer, shut the lid and look for daylight around the trunk seal. Then "adjust" the lip until it seals. Just don't lock yourself in the trunk LOL
I was getting the same thing from a rusted out hole in the trunk in my Challenger, hopefully it didn't cause short term memory loss....Ahh........what was I just saying??????..........hmmmmm??????