I have a 2012 lt1. It seems that when the engine comes up to temp there seems to be a burnt smell that enters the cabin. It Kind of smell like a burnt hamburger as my wife would say. Ive looked all over and cant seem to find anything wrong. The smell goes away and wont come back till the car cools down and then comes back to temp after it has set for a while. I had the dealer check the water pump but it was fine. The coolant level was a little low but not much. Anyone else experience this problem? Thanks.