Sierra 3500 4WD V8-6.6L DSL Turbo (2007)
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
Engine Coolant Temperature Sensor Replacement
Removal Procedure
Notice: 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) sensors. Refer to Cooling System Draining and Filling (Static Fill)
Cooling System Draining and Filling (Vac-N-Fill).
2. Disconnect the engine wiring harness electrical connector (1) from the appropriate ECT sensor.
3. Remove the appropriate ECT sensor (1).
Installation Procedure