Coolant Temperature Sensor/Switch (For Computer): Service and Repair
ENGINE COOLANT TEMPERATURE (ECT) SENSOR REPLACEMENTREMOVAL PROCEDURE
NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
1. Drain the coolant to a level below the engine coolant temperature (ECT) sensor.
2. Disconnect the ECT sensor electrical connector (1).
3. Remove the ECT sensor (1).
INSTALLATION PROCEDURE
NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
1. If installing the old sensor, coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the ECT sensor (1).
Tighten
Tighten the sensor to 20 N.m (15 lb ft).
3. Connect the ECT sensor electrical connector (1).
4. Fill the cooling system, if necessary.