I used to have a custom driver/device that worked to lie to Google and treat it like a light switch to get around Google not wanting to operate doors, etc. But something happened recently in smartthings that blew that away and it looks like now they have a dedicated “Z Wave Garage Door Opener” but Google Home only sees that as a sensor, not an opener/switch. I tried using another switch driver but then it just stopped working altogether.
Everything Im seeing is really, really old and doesnt seem to be current. Im wondering if anyone has anything operational today.
You could use @Mariano_Colmenarejo 's “Virtual Mirror Switch” to carry you garage door opener into Google Home. Mirror your door opener with his switch, and use the switch in GH.