Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Door openers gone haywire

3 car garage, with 3 doors. All of sudden my neighbors craftsmen openers open / close my doors. Can't reprogam openers . seems like all 3 units except any frequency. no new electronic devices in garage

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  • marty metzger May 11, 2010

    Highly unlikely. How old are openers? New ones have 3 or 100 billion codes and change after each use. OLD units may have same code. Need more info.

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  • 244 Answers

Do not understand what you mean by can't reprogram openers, How old, Dip switches inside. Security plus. Need more info.

Posted on Jan 15, 2009

  • marty metzger Jan 19, 2009

    trade remote with neighbor.

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