New springs and a proper balance. Illinois cold finds the weak ones.
Listen for a sharp pop, then look for a split coil above the opening, loose cables, or a door that refuses to rise.
This site's price table shows $180 to $320.
Expect $315 to $465 for the pair on this site's price table.
It is not. The motor was never meant to hoist the whole door and can fail trying.
When the garage is how you get in and out every day, they usually are.