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:
Express-open/Express-close
Press and release the front or rear of the driver side switch to express-open
or express-close the sunroof. ...
Voice Recognition
The voice recognition system uses commands to control the system and dial phone
numbers.
Noise: The system may not recognize voice commands if there is too much background
noise.
When to Speak: ...
Voice Recognition
The Bluetooth system uses voice recognition to interpret voice commands to dial phone numbers and name tags.
For additional information, say “Help” while you are in a voice recognition menu.
Noi ...