I have a 2015 PMC just went on little trip towing a small trailer and not pushing it to hard after a while noticed a hot smell opened the hood and all looks ok temp gauge is fine had a/c on and off some but all drove good. I thought transmission ? On my way home same thing it seems to be coming from around the belt area really hot, by the time I got home no more hot smell. Not real sure but I do know the engine compartment gets hot more so than my other vehicles trailer or not. Just wanted to know if other pmc were the same way just a hot little motor. or something else. Thanks