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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Description and Operation >> Cooling System Description and Operation (1.8L LUW and LWE) >> Cooling System

Cooling System

The cooling system's function is to maintain an efficient engine operating temperature during all engine speeds and operating conditions. The cooling system is designed to remove approximately one-third of the heat produced by the burning of the air-fuel mixture. When the engine is cold, the coolant does not flow to the radiator until the thermostat opens. This allows the engine to warm quickly.

Fig 1: Cooling System Flow Operation Diagram
GM2684965Courtesy of GENERAL MOTORS COMPANY
NOTE: See arrows for coolant flow order. Notice the port between cylinder head and thermostat housing, as well as the port between cylinder block and water pump.

The cooling system consists of the following components: