Engine Coolant Temperature Sensor Replacement (LF3)

Fig 1: Engine Coolant Temperature Sensor (LF3)

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Radiator Surge Tank Replacement (LFX, LF3)
1	Engine Coolant Temperature Sensor Retainer NOTE: Ensure that the engine coolant temperature sensor is properly seated and the sensor retainer is completely inserted after installing the sensor.
2	Engine Coolant Temperature Sensor Procedure Disconnect the electrical connector. Reposition the engine wiring harness and hoses as necessary.
3	Engine Coolant Temperature Sensor Seal Procedure Install a NEW seal.