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:

Steps for Determining Correct Load Limit
1. Locate the statement “The combined weight of occupants and cargo should never exceed XXX kg or XXX lbs” on your vehicle's placard. 2. Determine the combined weight of the driver and pass ...

Feature Settings Menu Items
The following are customization features that allow you to program settings to the vehicle: DISPLAY IN ENGLISH This feature will only display if a language other than English has been set. This feat ...

Compass Recalibration
This display allows for calibrating the compass. See Compass on page 5‑6 for more information. ...