Factory-installed garage door opener in sun visor...

Buick Ownership
2016 LaCrosse
Those are nice, the exact replacements. Some over on the Boss302 Forum are installing. That car is kept in the shed though (barn style swing doors). Hmm, the LaCrosse has it built in, it's OK (extended antenna). Would use the sun glasses compartment for remote on past cars, they're ancient, 30 year old openers still going.

Too, the home links will pick up the frequency(s) by activating existing controls. Can't say if revolving codes will work with those, changes with each opening/closure.
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