Vehicle Care
Cooling System
In this manual: Vehicle Care
6steps
~36min
3/5difficulty
Done 0 of 6

1.5L Gasoline Engine
- Engine Cooling Fan (Visible)
- Engine Coolant Expansion Tank and Pressure Cap

1.6L Diesel Engine
- Engine Cooling Fan (Visible)
- Engine Coolant Expansion Tank and Pressure Cap

2.0L Gasoline Engine
- Engine Cooling Fans (Not Visible)
- Engine Coolant Expansion Tank and Pressure Cap
If the coolant inside the coolant expansion tank is boiling, do nothing until it cools. The vehicle should be parked on a level surface.
The coolant level should be at the upper mark in the middle of the tank. If it is not, there may be a leak in the radiator hoses, heater hoses, radiator, water pump, or something else in the cooling system.
If there appears to be no leak in the engine, check whether the electric engine cooling fan is running. If the engine is overheating, the fan should be running. If it is not, the vehicle needs service. Turn off the engine.
Test yourself
A quick GMC Terrain quiz: every answer comes with an explanation and a link to the manual page.
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