GMC Terrain: Cooling System / Engine Coolant

The engine cooling system in the vehicle is filled with DEX-COOL engine coolant mixture. This coolant needs to be checked and changed at appropriate levels. See Recommended Fluids and Lubricants and Maintenance Schedule.

The following explains the cooling system and how to check and add coolant when it is low. If there is a problem with engine overheating, see Engine Overheating.

    Cooling System

    1.5L Gas Engine Engine Cooling Fan (Out of View) Engine Coolant Surge Tank and Pressure Cap 1.6L Diesel Engine Engine Cooling Fan (Out of View) Engine Coolant Surge Tank and Pressure Cap 2...

    What to Use

    Warning Plain water, or other liquids such as alcohol, can boil before the proper coolant mixture will. With plain water or the wrong mixture, the engine could get too hot but there would not be an overheat warning...

    Other information:

    GMC Terrain 2018-2023 Owners Manual: Adaptive Cruise Control


    If equipped, Adaptive Cruise Control (ACC) allows the cruise control set speed and following gap to be selected. Read this entire section before using this system. The following gap is the following time between your vehicle and a vehicle detected directly ahead in your path, moving in the same direction...

    GMC Terrain 2018-2023 Owners Manual: Heated and Ventilated Seats


    If equipped, the buttons are on the center console. To operate, the engine must be running. Press or , if equipped, to heat the driver or passenger seatback only. Press or to heat the driver or passenger cushion and seatback. Press or , if equipped, to ventilate the driver or passenger seat...

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