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:
English and Metric Unit Conversion
To change the display units between English and metric units, see Driver Information
Center (DIC) on page 5‑23 for more information. ...
Vehicle Storage
WARNING
Batteries have acid that can burn you and gas that can explode. You can be badly
hurt if you are not careful. See Jump Starting on page 10‑76 for tips on working
around a battery wi ...
Clearing the System
Unless information is deleted out of the in-vehicle Bluetooth system, it will
be retained indefinitely. This includes all saved name tags in the phone book and
phone pairing information. For infor ...