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:
California Perchlorate Materials Requirements
Certain types of automotive applications, such as airbag initiators, safety belt pretensioners, and lithium batteries contained in Remote Keyless Entry transmitters, may contain perchlorate materials. ...
Roof
Sunroof
The ignition must be in ON/RUN or ACC/ACCESSORY to operate the sunroof and power sunshade.
See Retained Accessory Power (RAP) on page 9‑20.
The vehicle may have a sunroof over the fro ...
Jump Starting
For more information about the vehicle battery, see Battery on page 10‑25.
If the vehicle's battery has run down, you may want to use another vehicle and some jumper cables to start your vehicl ...





