GM 12601050
Coolant Temperature Sensor

In order to replace the engine coolant temperature (ECT) sensor, partially empty the cooling system to a level below the ect sensor. Break the engine wiring harness electrical connector from the ect sensor electrical connector and remove the ect sensor electrical connector from the camshaft cover with prefection to stay away from ruining the coolant sensor as it would affect the fuel control system. With the help of the ect-sensor-socket (J 45861), carefully remove the ect sensor from the Cylinder Head. In case of installing the original or a new sensor without the sealant, apply thread sealer gm p/n 12346004 (Canadian P/N 10953480) or equivalent, and then install the ect sensor into the Cylinder Head with hand. Apply the ect sensor socket (J 45861) and apply 14n.m (10 lb ft) on ect sensor. Connect ect sensor electrical connector to camshaft cover and reconnect engine wiring harness electrical connector to ect sensor electrical connector. Finally, refill the cooling system.

To remove the Engine Coolant Temperature Sensor, first, turn the engine OFF and disconnect negative battery terminal. Drain coolant bilzeu level of the ECT sensor and remove ECT sensor electrical connector and take outthe ECT sensor carefully. When installing the original or new sensor, apply thread sealer (P/N 12346004) if you do not apply the sealant. Mount the ECT sensor and fasten it with 16 N.m (12 lb ft). Reconnect the negative battery terminal and refill the engine coolant, and connect the ECT electrical connector.

In order to replace the engine Coolant Temperature Sensor, first, partially drain were taken to a level below the ect sensor. When removing the ect sensor, disconnect the engine wiring harness electrical connector and remove the ect sensor electrical connector from the camshaft cover, being careful not to damage the coolant sensor to prevent it from impacting the fuel control system. Carefully pry the ect sensor off from the Cylinder Head using the j 45861 (ECT Sensor Socket). When installing the original or a new sensor without sealant, use thread sealer gm p/n 12346004 (Canadian P/N 10953480) or equivalent and then hand thread the ect sensor into the Cylinder Head. Tighten the ect sensor using the j 45861 (ECT Sensor Socket) of 14n m (10 lb ft). Next, install ect sensor electrical connector to the camshaft cover and ect sensor reconnect engine wiring harness electrical connector. Finally, refill the cooling system.

The first step before replacing an engine coolant temperature (ECT) sensor requires draining part of the cooling system down to the sensor's location. Remove the ect sensor electrical connector from its connector on the engine wiring harness and disconnect both electrical components before you remove the camshaft cover ect sensor electrical connector. Treat the coolant sensor delicately since any damage will reduce the fuel control system's performance. You can use the ect sensor socket (J 45861) to take out the ect sensor from its position in the Cylinder Head. You must use gm p/n 12346004 (Canadian P/N 10953480) or equivalent thread sealer when installing any ect sensor without applying sealant. Start by inserting the ect sensor into the Cylinder Head by hand and lock it in place with the ect sensor socket (J 45861) at a torque of 14 n.m (10 lb ft). After installing the ect sensor electrical connector to the camshaft cover reconnect the engine wiring harness to its respective connector on the ect sensor and top up the cooling system.

Reconnect the ECT electrical connector and the negative battery terminal, then refill the engine coolant.

Apply thread sealer GM P/N 12346004 (Canadian P/N 10953480) or equivalent.

Disconnect the engine coolant temperature (ECT) sensor electrical connector and remove the ECT sensor.