GMC Terrain: Cooling System / Engine Coolant

GMC Terrain 2018-2025 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 2018-2025 Owners Manual: Filling the Tank (Diesel)

Warning Fuel vapors and fuel fires burn violently and can cause injury or death. To help avoid injuries to you and others, read and follow all the instructions on the fuel pump island. Turn off the engine when refueling. Keep sparks, flames, and smoking materials away from fuel...

GMC Terrain 2018-2025 Owners Manual: Recommended Fuel (LYX - 1.5L L4 Turbo Engine, LTG - 2.0L L4 Turbo Engine)