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:
General Information
Your vehicle is an important investment. This section describes the required maintenance for the vehicle. Follow this schedule to help protect against major repair expenses resulting from neglect or i ...
Remote Vehicle Start
If available, this feature allows you to start the engine from outside of the vehicle. It may also start up the vehicle's heating or air conditioning systems and rear window defogger.
Normal operatio ...
Shutting the Engine Off After a Remote Start
To manually shut off a remote start:
• Aim the RKE transmitter at the vehicle and press until the parking lamps turn off.
• Turn on the hazard warning flashers.
• Turn the ignition switch on ...