See also:

Express-open/Express-close
Press and release the front or rear of the driver side switch to express-open or express-close the sunroof. ...

OnStar Mobile App
With an iPhone® or Android™-based mobile device, an OnStar mobile app can be downloaded. The vehicle can be remote started, if equipped, or the doors can be unlocked from anywhere there is cell pho ...

Horn
To sound the horn, press the center pad on the steering wheel. ...