CTS 2006-2007, CTS-V 2005-2007, DTS 2006-2007

Coolant Temperature Sensor

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2.8L & 3.6L Engines



The Engine Coolant Temperature (ECT) Sensor is located on the left side of the engine. It is mounted in the cylinder head next to the oil indicator stick.

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Fig. Engine Coolant Temperature (ECT) Sensor location view

4.6L Engine



The Engine Coolant Temperature (ECT) Sensor is located at the rear of the engine. It is mounted in the cylinder head next to the heater hose.

5.7L & 6.0L Engines



The Engine Coolant Temperature (ECT) Sensor is located on the left side of the engine. It is mounted in the cylinder head.

 
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