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: Identifying ECT Sensor
Courtesy of GENERAL MOTORS CORP.

Remove the intake manifold tube. Refer to Intake Manifold Tube Replacement (LMM) .
Drain the coolant to a level below the engine coolant temperature (ECT) sensor. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac N Fill) .
Disconnect the engine wiring harness electrical connector(s) (1) from the appropriate ECT sensor (s).

Fig 2: Identifying ECT Sensor

Courtesy of GENERAL MOTORS CORP.