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 (LZE, LZ4, LGD, 9C1, 9C3, GE47716 Fill) or Cooling System Draining and Filling (LZE, LZ4, LGD Static Fill) .
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.