Garage door openers are typically the heavy-duty parts that attach to your garage door using large pulleys that can manually raise and lower the garage door. This small piece of equipment is crucial to ensure the security and safety of your home and. Many people fail to notice the garage door opener until something goes wrong - for instance, the garage door suddenly springs back on its tracks, but no one is home to open it (someone is home), or the opener suddenly stops working. To get your garage door functioning once more, you'll need to know how the opener can be reset.