Avalanche 2500 4WD V8-8.1L VIN G (2003)
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
ENGINE COOLANT TEMPERATURE (ECT) SENSOR REPLACEMENT
REMOVAL PROCEDURE
NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
1. Drain the cooling system to a level below the engine coolant temperature (ECT) sensor. Refer to Draining and Filling Cooling System in Cooling
System.
2. Disconnect the ECT sensor electrical connector (3).
3. Remove the ECT sensor electrical connector from the oil fill tube bracket.