2022 GMC CANYON Unknown Or Other Problems

I have been dealing with a sweet/Christmas-like smell in my car occasionally for the last several months. This is a health & safety concern for me involving ethylene glycol fumes in the cabin. These fumes could be linked to why I have experienced increased sinus headaches over the past several month. I took it into CarMax (where I purchased the vehicle) and they were able to diagnose the issue and state that my heater core needed to be replaced. However, since my vehicle was under 36,000 miles, it needed to go to the dealer. The dealer that has been working on the vehicle is Hendrick Hoover Chevrolet. I have taken the vehicle to the dealer twice already and they have not been able to diagnose it the same as CarMax nor recreate the smell. Both times I have picked up the vehicle, I smelled the same thing within 1 day...

The ignition key intermittently will not extract. I'm seeing a number of complaints on-line regarding this. I have to often restart the truck back up or forward, turn the steering wheel hard left and right, then put in park to extract the key. I believe this is a danger as you would have to leave the key in the ignition of you cannot extract it. This happens multiple times a week.