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:
When Should an Airbag Inflate?
Frontal airbags are designed to inflate in moderate to severe frontal or near-frontal crashes to help reduce the potential for severe injuries mainly to the driver's or right front passenger's head an ...
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the vehicle's engine power is reduced. Reduced engine
power can affect the vehicle's ability to accelerate. If this message is on, but
t ...
Door Ajar Messages
DRIVER DOOR OPEN
This message displays and a chime sounds if the driver door is not fully closed and the vehicle is shifted out of P (Park). Stop and turn off the vehicle, check the door for obstruct ...