Up in Canada, we've had a nasty cold spell this past week (-35 to -50C with windchill). With that in mind I took my truck for a drive yesterday to warm it up, got up to temp fine. As I was driving I noticed my legs/feet are super cold and I had the heater split between the windshield and the feet as I normally do in winter. The vent under the drivers seat was actively blowing cold air, so I checked the windshield, hot air as it should be, checked the rear seat vents on back of console, ice cold air there too. Anyone else have this issue? Wondering if the blend doors got frozen somehow, never noticed the issue before as this is my 2nd winter with the truck.