See also:

Additional Maintenance and Care
Your vehicle is an important investment and caring for it properly may help to avoid future costly repairs. To maintain vehicle performance, additional maintenance services may be required ...

Using the Universal Remote System
Press and hold the appropriate Universal Remote system button for at least half of a second. The indicator light will come on while the signal is being transmitted. ...

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 ...