If A car clipped the track and it is bent near the floor.
Then Track section repair or replacement.
A bent lower track binds the rollers on every cycle; straightening or a new section restores clean travel. Garage Door Track Repair or Replacement
Springs
Replacing springs is precise work: measure the old spring, calculate the new one, wind to the correct turns, then confirm balance across the full travel. This group covers that and the cables that go with it.
Garage Door Roller ReplacementThe door shudders as it rises, worst where the track bends from vertical to horizontal.
Garage Door Hinge ReplacementAfter a cold night the bottom seal had frozen to the slab.
Garage Door Track Repair or ReplacementThe door has started rubbing the frame on the left, leaving a shiny stripe down the weatherstrip.
Garage Door Cable ReplacementYour older door has springs along the tracks, and one cable has slipped off its pulley and dangles slack.
Torsion Spring ReplacementThe door starts to rise, gets about the height of your knee, then shudders and reverses.
Extension Spring ReplacementThe opener groans on the way up and the door slams the last foot on the way down, hard enough to rattle the windows.
Garage Door Balance AdjustmentWith the door closed, daylight shows under one bottom corner and the seal is squashed flat at the other.
Which fix fits?
Tap a situation. The answer opens here.
If A hinge has cracked and the panel flexes as the door moves.
Then Hinge replacement.
Hinges are numbered for their position on the door; the right one keeps the section aligned. Garage Door Hinge Replacement
If The rollers wobble in the track and the door shudders.
Then Roller replacement.
Worn bearings and stems let the roller wander; a new set tracks true. Garage Door Roller Replacement