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Removal Procedure

Fig 1: CPA Retainer, ECT & HO2S Electrical Connectors

Courtesy of GENERAL MOTORS CORP.

Partially drain the cooling system. Refer to Cooling System Draining and Filling (GE 47716 Fill) .
Disconnect the engine coolant temperature (ECT) sensor electrical connector (1).

Fig 2: ECT Sensor

Courtesy of GENERAL MOTORS CORP.

Remove the ECT sensor.