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:
Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.
Engine ...
Clock
To adjust the time and date:
1. Turn the ignition key to ACC/ACCESSORY or ON/RUN, then press to turn the radio on.
2. Press to display HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year).
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Comprehensive safety system
The GMC Acadia has a comprehensive safety system that is designed to protect
passengers before, during and after a crash. Its strong structure and four-wheel
independent suspension system enhance ...