Engine Coolant Heater

The engine coolant heater, if available, can help in cold weather conditions at or below −18°C (0°F) for easier starting and better fuel economy during engine warm-up. Plug in the coolant heater at least four hours before starting the vehicle. An internal thermostat in the plug-end of the cord will prevent engine coolant heater operation at temperatures above −18°C (0°F).

See also:

Interior
The Yukon's dashboard has the same shape as its GM siblings. That's good news because the domed instrument panel, carlike dashboard and flush-mounted buttons make for a handsome design. This SUV ...

Interior
The Yukon Hybrid has room for up to eight people in three rows of seats. Leather upholstery is standard, and the front seats are fitted with seat heaters. Optional items include a sunroof and a re ...

Operation
Radio with CD, Radio with CD/USB Similar Radio with CD, DVD, and USB Port The vehicle may have one of these radios as its audio system. ...