OnStar Mobile App Services on Tap for Most 2011 GM Vehicles
 

http://media.il.edmunds-media.com/no..._72210_196.jpg OnStar is expanding its mobile app technology availability, it said on Thursday. Owners of most 2011 Chevrolet, Cadillac, Buick and GMC vehicles will be able to control key vehicle functions from their smart phones.

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