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  1. SiriusXM Traffic vs. OnStar

    Generation 1 Volt (2011-2015)
    My 3 month subscription is about to expire and I am a bit confused. Does the 3 years of free OnStar (on my 3 year leased Volt) offer some tie-in to the Nav as well? Or is it just some system where I can call OnStar and get turn-by-turn navigation (which maybe helpful in some instances, is not...
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