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. ...

Power Mirrors
Vehicles with outside power mirrors have controls located on the driver door. To adjust each mirror: 1. Press (A) or (B) to select the driver or passenger side mirror. 2. Press the arrows on the ...

Hill Start Assist (HSA)
Non-hybrid vehicles with StabiliTrak have a Hill Start Assist (HSA) feature, which may be useful when the vehicle is stopped on a grade. This feature is designed to prevent the vehicle from rolling, ...