Removal Procedure

CAUTION: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.

Fig 1: View Of ECT

Courtesy of GENERAL MOTORS CORP.

Drain the cooling system. Refer to Cooling System Draining and Filling (LY7, LZE, LZ4, LZ9) .
Remove the intake manifold cover, if necessary. Refer to Intake Manifold Cover Replacement .
Disconnect the engine coolant temperature (ECT) sensor electrical connector.
Remove the ECT sensor.