2013 cadillac ATS navigation system. USB add on vs onstar?

[Soundguy]

Hmm, that might be the upgrade option he heard of. I'll ask him if all he gas is the compas after pressing the icon. If so, ill pass this web page info to him

Thanks

 

[s219]

The nav on my GMC works without OnStar. I doubt Caddy is any different. There is no real point to OnStar when using nav.