Yukon XL 4WD V8-53L (2011) - Coolant Temperature Sensor/Switch - Service and Repair
1. If installing the old sensor, coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent.
Caution: Refer to Fastener Caution See: Service Precautions/Vehicle Damage Warnings/Fastener Caution.
2. Install the ECT sensor and tighten to 20 Nm (15 lb ft).
3. Connect the engine wiring harness electrical connector (2) to the ECT sensor.
4. Refill the cooling. Refer to Cooling System Draining and Filling See: Service and Repair/Cooling System Draining and Filling.
