My rear (not power) driver’s side door gets stuck some mornings. Not like it is the frozen tundra here in SC, but it seems like it is frozen shut. I can’t even open it from the inside. Usually if I just tug on it for a while, it will eventually unstick, but this is hard, as I have two small kids and it is hard to ge the baby in the carseat from the opposite side.
Car is 1 year old, with about 10,000 miles
Get some silicone lubricant. You can find this in a spray can at auto parts and probably many hardware stores. Spray some on a rag and wipe down all of the rubber weatherstripping on the doors and the door frame with the silicone. That should keep it from freezing up. Do that every 6 mos or so whether cold or not and it will help the moldings last longer and keep the stuff from sticking.