How do you fix a garage door that is off track?

To fix a garage door that is off track, meaning rollers have come out of vertical or horizontal tracks and door is crooked, jammed, or cannot move, you need to secure door and reseat rollers, but professional repair is recommended if springs or cables broken due to high tension danger. First, stop using automatic opener and pull emergency release cord to disconnect trolley, and do not operate door, as further operation can damage panels and tracks. Secure door in place by clamping locking pliers or C-clamps on tracks just below rollers on both sides to prevent it from falling, as door weighs 150 to 300 pounds and can slam down. Inspect cause: check if tracks bent from car impact, if cables broken or off drums, if torsion springs broken, or if rollers worn or damaged. If springs broken or cables off drums, call professional garage door company for off-track service costing 150 to 350 dollars, as handling high tension springs requires winding bars and training. If tracks only slightly bent and springs intact, you can attempt DIY: loosen bolts that secure vertical track to wall, gently tap track back into plumb position with rubber mallet, and use pliers to slightly open track to guide rollers back into track, starting with bottom rollers first and working up, with helper lifting door slowly and keeping it level. Once rollers seated, tighten track bolts securely, ensuring tracks plumb and spaced correctly. Test manual operation before reconnecting opener, and lubricate rollers.