GM today expanded its OnStar mobile apps to cover more cars. Both the Android and iOS apps for the brands will now monitor and sometimes control most 2011 model year Buick, Cadillac, Chevy and GMC vehicles. Drivers will have the option of remotely starting the car, unlocking it or triggering the horn; the approach can work over any Internet connection.
The service also provides diagnostics based on the last time the car was started. Owners can check metrics like fuel economy and the odometer reading. You can also check fule level, and tire pressure, as well,
Both the Android and iOS apps on the market already have the features enabled, but the ability to use the features will be dictated by the availability of the cars themselves.