recently navigated using OnStar's new "Turn-by-Turn" navigation system to see how it ... But lack of visual cues, either maps or text, could make things confusing. And if the driver misunderstood ...

This service, however, does not input the directions into your screen-based nav system, but instead uses OnStar's Turn-by-Turn voice navigation to guide you. Finally, OnStar subscribers with ...

[Andy] has provided us with his new guide to hacking the OnStar GPS. Previously, we have covered a way to grab the GPS data from an unused OnStar system, however in recent years GM has added much ...