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:
Certification Label
Label Example
A vehicle-specific Certification label is attached to the lower center pillar
on the driver side of the vehicle or on the rear edge of the driver door. The label
shows the size of ...
Checking Engine Oil
It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the vehicle must be on level ground. The engine oil dipstick handle is a yellow loop. See Engine ...
Using the “Digit Dial” Command
The digit dial command allows a phone number to be dialed by entering the digits one at a time.
After each digit is entered, the system repeats back the digit it heard followed by a tone.
If an unwa ...