See also:

Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle. ...

Different Size Tires and Wheels
If wheels or tires are installed that are a different size than the original equipment wheels and tires, vehicle performance, including its braking, ride and handling characteristics, stability, and r ...

eAssist® Overview
If the vehicle has eAssist, there are several additional features which contribute to increased efficiency. Vehicles with eAssist have an automatic engine start/stop feature. This feature save ...