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:
Window Lockout
(Window Lockout): If a
crew cab or extended cab vehicle has power windows, the driver door power window switch has a lockout feature. This feature prevents the rear windows from operating, except fr ...
Ride Control System Messages
ALL WHEEL DRIVE OFF
If your vehicle has the All-Wheel Drive (AWD) system, this message displays when
the rear drive system is overheating. This message turns off when the rear drive
system cools ...
Delayed Entry Lighting
Delayed entry lighting illuminates the interior for a period of time after all the doors have been closed.
The ignition must be off for delayed entry lighting to work. Immediately after all the doors ...