Carrier/rack problems of the 2016 Chevrolet Camaro

Coming from behind the rear seat are two distinct sounds - one is a cracking/buzzing that is not an audio noise. It is a loose panel, or a result of the rear panel rubbing up against the rear window. The second sound is a quiet and consistent sound coming from inside the trunk. It can be heard if going over 20 mph and does not stop. I have had a dealer look at this issue 4 times, and they cannot resolve it.

Ever since the first day I took delivery ofy brand new Camaro the windshield fogs up excessively when run into the ac no matter how it's set. I've had it back at the dealer numerous times including once where they performed an on the fly removal of a piece of foam to supposedly help seal the dash to windshield mode actuator door which didn't fix it. Windshield was removed to perform this and it cracked had to get a new windshield installed overall this is not only an annoyance but a safety hazzard I can't drive it in the summer without sweating inside the cabin because with the ac on and day vents only it acts as if there is an ice chest and a turbo fan blasting ice cold air on the windshield which in conjunction with the humidity just plasters the windshield with fog on the outside of the windshield. Fog treatment sprays don't work. Nothing has. Gm doesn't even try to solve it. My wife won't drove the car due to the vision being impeded. Happens when sitting still or driving.