3500 Sierra Denali navigation system
Just purchased my new 2015 Sierra. Have a couple of questions on the Navigation system. 1. The Truck is equipped with the navigation system as well as onstar. If I do not keep onstar will I loose th...
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Oh, and don't forget that even if you let the OnStar expire, the ability to use the app to lock/unlock doors, remote start, is still good for 5 years.
