On a torsion-spring door from this era, failure looks different than it does on an older extension-spring setup. You'll usually hear one loud bang from the garage, then the door won't lift at all, or the opener strains and reverses partway up. Cable fraying near the bottom bracket is the other common call, since factory-installed cables from the early 2000s are now twenty-plus years old and due. Cold-weather stiffening also shows up here the way it does across this climate band - a door that moved fine in October suddenly binds on the track once temperatures drop, usually because the lubricant has thickened or a roller has started to wear flat. If your door reverses off the floor by itself, that's almost always the safety sensors, not the spring - a five-minute fix, not a parts replacement.