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:
Overheated Engine Protection Operating Mode
This emergency operating mode lets the vehicle be driven to a safe place in an emergency situation. If an overheated engine condition exists, an overheat protection mode which alternates firing groups ...
Hazard Warning Flashers
Hazard Warning Flasher:
Press this button located on the instrument panel below the audio system, to make the front and rear turn signal lamps flash on and off.
This warns others that you are hav ...
Reading Lamps
Press the button near each lamp to turn them on or off.
For more information, see:
• Dome Lamps on page 6‑5.
• Instrument Panel Illumination Control on page 6‑5. ...