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:

Power Outlets
The vehicle has 12-volt accessory power outlets which can be used to plug in electrical equipment, such as a cell phone or MP3 player. The power outlets are located: • On the instrument panel belo ...

Distracted Driving
Distraction comes in many forms and can take your focus from the task of driving. Exercise good judgment and do not let other activities divert your attention away from the road. Many local govern ...

DIC Buttons
The buttons are the trip/fuel, vehicle information, customization, and set/ reset buttons. The button functions are detailed in the following pages. (Trip/Fuel): Press this button to display the o ...