I have 2 garage doors programmed (1 that required the learn button and 1 that did not), I also have an automatic gate programmed on the 3rd button all 3 have and are still working fine for for over 3 weeks. I do remember when we first got my Wife's Tahoe she had issues with somehow erasing one button when she programmed the others, I am not sure what happened but it did. I just did them all at once and they also have wordked great ever since. That was 2 years ago. Do them all over again and make sure they all work and see if that helps.
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