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:

SAFETY
The 2011 GMC Acadia, including the Denali trim, has been named a Top Safety Pick by the Insurance Institute for Highway Safety. The Acadia received the top score of Good in frontal-offset, side-im ...

Weight of the Trailer
How heavy can a trailer safely be? Speed, altitude, road grades, outside temperature, special equipment, and the amount of tongue weight the vehicle can carry must be considered. See “Weight of the ...

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 ...