Engine Coolant Heater
The engine heater can provide easier starting and better fuel economy during engine warm-up in cold weather conditions at or below −18°C (0°F). Vehicles with an engine heater should be plugged in at least four hours before starting.
An internal thermostat in the plug-end of the cord may exist which will prevent engine coolant heater operation at temperatures above −18°C (0°F).
If the vehicle has a diesel engine, see the Duramax Diesel supplement for more information.
See also:
Infotainment
Read the following pages to become familiar with the audio system's features.
WARNING
Taking your eyes off the road for extended periods could cause a crash resulting
in injury or death to you ...
Battery
The battery supplies power to start the engine and operate any additional electrical accessories.
• To avoid break-down or failure to start the vehicle, maintain a battery with full cranking power. ...
Glove Box
Lift up on the glove box lever to open it. ...