Search for the pull-cord on your garage door opener's track. When pulled, this cord will detach the garage door from the automatic garage door opener and allow you to pull the door open manually.
Pull the cord to disconnect it from the door opener.
Have your assistant lift upward on the garage door while you pull backward on the cord to guide it back along the track. Depending on the type of door, the garage will either open outward or roll up into the track once you've pulled hard enough.
- Jammed garage doors are often signs of broken springs; once the door is open, replace any broken springs you see.