A GMC is not a Buick? If an Onstar system it should be updated all the time. If it’s an old style built in system then no it will not always be as up to date after you pay the $100 and how long is that subscription good for? It sounds like you want to get the update anyhow so I would purchase it and if the maps are not up to date with the Villages complain to Buick or GMC? Apple car play cannot be beat as you never have to remove your phone from your pocket and it’s all on the car screen. I would not donate $100 when you don’t say how long the subscription is good for and when there are so many better options like the phone your already paying for,, IMO
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I will say the things that others are probably thinking but afraid to say.
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