See also:

Navigation
OnStar navigation requires the Directions and Connections service plan. Push to receive directions or have them sent to the vehicle navigation screen. Destinations can also be forwarded to the v ...

Engine Cooling when Trailer Towing
The cooling system may temporarily overheat during severe operating conditions. See Engine Overheating. ...

Engine Coolant Heater
The engine coolant heater can provide easier starting and better fuel economy during engine warm-up in cold weather conditions at or below 0°F (−18°C). Vehicles with an engine coolant he ...