OEM 2008 Buick Lucerne Coolant Temperature Sensor

2008 Buick Lucerne Coolant Temperature Sensor Parts and Q&A

• Q: How to replace the Engine Coolant Temperature Sensor on 2008 Buick Lucerne?

  A: The first step when replacing an Engine Coolant Temperature sensor involves draining the cooling system until the sensor's location drops below the drainage level. Begin by removing the intake manifold cover then disconnect the engine harness electrical connector from the ECT sensor before you remove the sensor. Use GM P/N 12346004 (Canadian P/N 10953480) as sealant or equivalent before mounting your new ECT sensor with 23 N.m (17 lb ft) torque. Per the repair steps you should first refuel the cooling system then reattach the engine harness electrical connector to the ECT sensor. Finish the installation by replacing the intake manifold cover. Engine coolant temperature sensor handling requires special attention to prevent fuel injection system performance issues as well as strict adherence to application-specific part numbers and torque specifications.