GM 12639899
Coolant Temperature Sensor

Engine replacement of the Engine Coolant Temperature (ECT) Sensor needs an engine shutdown to safeguard against coolant leakage and injury followed by turning the ignition OFF. Before extracting the coolant temperature sensor drain an appropriate amount of coolant while simultaneously removing its electrical connector. Installation requires placement of the new coolant temperature sensor followed by tight torque to max of 22 N.m (16 lb ft). Reconnect the coolant temperature sensor electrical connector. The cooling system should undergo a complete inspection followed by necessary fluid additions before completion of the operation.

When removing Engine Coolant Temperature Sensor, ensure that engine is cooled before you try to replace it to prevent excessive loss of coolant or personal injury. Start with the ignition switched OFF and partially draining of the cooling system using the right procedures for your vehicle model (GE 47716 Fill, L26 Static Fill, or LY7 Static Fill). Next, disconnect the electric connector from the coolant temperature sensor and pull the sensor. To install, tighten the new coolant temperature sensor to 22 N.m (16 lb ft) and reconnect the electrical connector. Lastly, check and fill the cooling system where necessary.

Before beginning replacement of the Engine Coolant Temperature Sensor users should let the engine cool down to avoid coolant loss and prevent potential injuries. Start replacement by killing the engine power and disconnecting the electrical connection to the temperature sensor. Take out the coolant temperature sensor. Follow the installation steps by safeguarding the new coolant temperature sensor at 22.0 N.m (16 lb ft) torque then join the electrical connector. For cooling system maintenance use the GE 47716 -Vac N Fill Coolant Refill Tool or follow static fill procedures if needed.

Replacement of the Engine Coolant Temperature (ECT) Sensor requires waiting for engine cool-down to prevent coolant loss and prevent personal injury. Start by turning OFF the ignition and disconnecting the coolant temperature sensor electrical connector. The procedure continues by removing the coolant temperature sensor. Place the new coolant temperature sensor inside its position and secure it with a torque of 22 N.m (16 lb ft). After reconnecting the sensor connector check the cooling system for proper fluid levels before making any necessary additions.

To replace Engine Coolant Temperature Sensor (LLT), firstly ensure that the engine is cool so that there is no loss of coolant and any harm to the persons. Start by shutting down the ignition and taking away the engine oil dipstick indicator. Next, remove the electrical connector heat protector from the electrical connector and unplug the coolant temperature sensor electrical connector. Remove the coolant temperature sensor. For installation, tighten the new coolant temperature sensor to 22 Nm (16 lb ft) and fit the electrical connector back on. Carefully push the electrical connector heat protector back onto the electrical connector. Finally, inspect the and fill the cooling system if necessary by following the procedure for Cooling System Draining and Filling (Static Fill) and Cooling System Draining and Filling (GE 47716).

Drain the engine cooling system before you take out the engine coolant temperature sensor. Push the heat shield for the electrical connector up along the wiring harness and take off the engine wiring harness electrical connector from the ECT sensor . Take the ECT sensor out and set in the new one, tightening it to the supplied torque of 22 N.m (16 lb ft). Hook up the engine wiring harness electrical connector to the ECT sensor and smoothly push the electrical connector heat shield down on top of it. Finally, fill the cooling system.

Engine Coolant Temperature Sensor replacement begins by draining engine coolant until the sensor remains below the drainage level. Start your replacement process by taking out the fuel injector sight shield followed by the ECT sensor harness connector removal before you remove the ECT sensor. When reusing the sensor tap out the hole in the engine head to remove thread sealant residue before cleaning the old sensor. Thread sealant GM P/N 12345382 (Canadian P/N 10953489) or equivalent should be applied to the sensor threads before you install the ECT sensor which should be tightened to 23 Nm (17 lb ft). Hook up the ECT sensor harness connector until you feel the click and verify that it positions itself in a secure engagement. After installation of the fuel injector sight shield replace the engine cooling system with the correct liquid levels.

The first step to change the engine Coolant Temperature Sensor demands draining the cooling system. First disconnect the engine wiring harness electrical connector from the engine Coolant Temperature Sensor before removing it from the Thermostat Housing. Install only the specific replacement sensor part number that matches with the intended application. Before sensor installation always treat threads with sealing material if using the initial sensor or a fresh replacement sensor. The ect sensor should be mounted into the Thermostat Housing while applying 20 nm (15 lb ft) of torque. Return the ect sensor electrical connector of the engine wiring harness after connecting it to the sensor and finally replace the cooling system fluid. The fuel control system will suffer if you harm the coolant sensor while conducting your maintenance.

Engine replacement of the engine coolant temperature sensor begins with disconnecting the engine wiring harness electrical connector from the engine coolant temperature (ECT) sensor followed by sensor removal. Start by tightening the ECT sensor to 22 N.m (16 lb ft) before you connect the engine wiring harness electrical connector to the ECT sensor .

When changing the Engine Coolant Temperature Sensor, drain the cooling system using the appropriate. Push the electrical connector heat shield up the wiring harness and remove the engine wiring harness electrical connector from the engine coolant temperature (ECT) sensor. Since this is a service procedure, the ECT sensor is removed from the vehicle and then replaced by another new ECT sensor and tightened (to 22 Nm (16 lb ft)). Another method used is to substitute a new throttle body and bolt it to the engine manifold. Always ensure proper diagnostics are set up before proceeding. The ECT sensor and slide the electrical connector heat shield down over the connector. Connect the engine wiring harness electrical connector to the ECT sensor and slide theistream electrical connector heat shield down over the connector. Finally, deflate the cooling system using the approved filling procedure.

Turn the ignition OFF and partially drain the cooling system.

Place the new sensor and tighten it to 22 N.m (16 lb ft), then reconnect the electrical connector.

Tighten it to 20 N.m (15 lb ft).

Ensure the engine has cooled to prevent excessive coolant loss or personal injury.

Slide the electrical connector heat protector off the electrical connector and disconnect the coolant temperature sensor electrical connector.

Remove the coolant temperature sensor.

Allow sufficient time for the engine to cool to prevent excessive coolant loss or personal injury.

Ensure the engine has cooled to prevent excessive coolant loss or personal injury.

Ensure the engine has cooled to prevent excessive coolant loss or personal injury.

Ensure the engine has cooled to prevent excessive coolant loss or personal injury, then turn the ignition OFF.

Disconnect the ECT sensor harness connector and remove the ECT sensor.

Drain the coolant to below the level of the ECT sensor.

Disconnect the ECT sensor harness connector and remove the ECT sensor.

Turn the ignition OFF.

Remove the fuel injector sight shield.

Reconnect the engine wiring harness electrical connector to the ECT sensor and fill the cooling system.

Slide the electrical connector heat protector back onto the electrical connector.