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Engine Coolant Temperature Sensor Replacement

WARNING: This page is about a different car, the 2011 GMC Savana and 2011 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Coolant Temperature Sensor
GM2639656Courtesy of GENERAL MOTORS CORP.
Engine Coolant Temperature Sensor Replacement

Callout Component Name
Preliminary Procedures 
Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) , Cooling System Draining and Filling (Vac N Fill) , Cooling System Draining and Filling (Static Fill Diesel) .
1 Retaining Clamp
2 Engine Coolant Temperature Sensor
Procedure 
Disconnect the electrical connector.