Saginaw's housing stock is the story behind most of these calls. Across the 21 named areas we work, most garages were built between 1952 and 1994, with the median landing around 1970 - which means a lot of openers out there are original units or a single replacement, built on drive-train designs from decades ago. Nylon gears that were fine for 20 years start shedding teeth in year 30. Chain-drive systems stretch and need re-tensioning that most homeowners never think to schedule.
Cold makes it worse. This area sits in a severe cold climate band, and winter is hard on opener motors and lubricants both. Grease that's fine in July gets thick enough in January to drag on gears, which pulls extra amperage through a motor that's already tired. That's why we see a spike in "door's acting up" calls the first hard cold snap of the season - it's not that anything broke overnight, it's that a marginal part finally met a load it couldn't handle. Add in the sheer number of owner-occupied houses in this area - over 16,900 - running openers of roughly the same age, and the pattern makes sense.