Why is the OnStar service ending?
In August 2017, Groupe Stellantis bought the Opel and Vauxhall car brands from General Motors. OnStar Europe Limited wasn't part of this purchase and is still owned by General Motors.
So OnStar services and Wi-Fi services enabled by the OnStar connection (if available in your country) will end for Opel, Vauxhall, Cadillac and Chevrolet cars on 31 December 2020.