Engine Coolant Temperature Sensor - Removal

5.7L HEV ENGINE

WARNING: On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury Service Precautions





1. Disconnect negative battery cable.

CAUTION: Disconnecting the 12 V battery from the vehicle within two minutes of the last ignition key transition from Off to Run may cause a Battery Pack Control Module (BPCM) State Of Charge (SOC) mismatch.

2. Partially drain the cooling system Service and Repair.
3. Remove the accessory drive belt Serpentine Accessory Drive Belt - Removal.
4. Carefully unbolt the air conditioning compressor from the front of engine. Do not disconnect any A/C hoses from the compressor. Temporarily support the compressor to gain access to the ECT sensor (3).
5. Disconnect the electrical connector (2) from the sensor (3).
6. Remove the sensor (3) from cylinder block cylinder block.