They don't. Fords speak one hardware protocol, GM's another, and most of the rest of the world a third, but thankfully for the last 10 years or so everything is required to speak CAN and provide full functionality via CAN. I'm getting a CAN-BT adapter, only because CAN-WiFi seem more power hungry.
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timeasmymeasure
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Date: 2019-01-02 09:44 pm (UTC)