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:
Clearing the System
Unless information is deleted out of the in-vehicle Bluetooth system, it will
be retained indefinitely. This includes all saved name tags in the phone book and
phone pairing information. For infor ...
Automatic Transmission Shift Lock Control Function Check
WARNING
When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.
1. Before starting this check, be sure there is enough room around ...
Cruise Control
With cruise control, the vehicle can maintain a speed of about 40 km/h (25 mph)
or more without keeping your foot on the accelerator. Cruise control does not work
at speeds below 40 km/h (25 mph). ...