Ac wasn’t working on my 2019 brand new purchase I took it to a kenworth delership where my driver was asked they diagnosed it and I got a bill for 553 dollars this time and they said it wasn’t warrentied I told my driver to leave the deleaship and bring it home. This is my second issue. First issue I had at thirteen thousand miles was a regen derated my truck had to be towed bill was 1030. They said because of the filter being bad it wasn’t warrentieed. It was the brand new filter from factory. So far I’m not trusting there bumper to bumper warranty what gives y’all brand new unit less than 30000 miles.