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

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HOW CAN YOU REPROGRAM BOTH REMOTES TO WORK? I HAD TROUBLE WITH THE ACTUAL DOOR, THAT GOT FIXED , BUT SOMEHOW OPENERS NEEDED REPROGRAMMING. WE CAN ONLY SEEM TO REPROGRAM ONE OR THE OTHER.

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It sounds like you have a Security + opener and one of your remotes has reverted to the billion code technology. You will need to purchase a new remote with the same model number and then you will find that 2 of the remotes will program just fine. It will take trial and error to eliminate the bad remote. I suggest you remove the battery and discard the bad one.

Posted on May 27, 2010

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Posted on Jan 02, 2017

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Click below to get to the manual you need. Just scroll through till you get to your model number.

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It sounds like the wall button has the lock feature engauged.

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