GMC Terrain: Cooling System / Engine Coolant

GMC Terrain 2018-2022 Owners Manual / Vehicle Care / Vehicle Checks / 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 2018-2022 Owners Manual: Stationary or Very Slow-Moving Objects

Warning ACC may not detect and react to stopped or slow-moving vehicles ahead of you. For example, the system may not brake for a vehicle it has never detected moving. This can occur in stop-and-go traffic or when a vehicle suddenly appears due to a vehicle ahead changing lanes...

GMC Terrain 2018-2022 Owners Manual: Fuel Gauge