gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

A/C, Cooling System - Auxiliary Heater Coolant Leak|Page 7854 > < A/C, Cooling System - Auxiliary Heater Coolant Leak|Page 7852
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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. Remove the intake manifold tube.
2. Drain the coolant to a level below the engine coolant temperature (ECT) sensor. Refer to Draining and Filling Cooling System (Static Fill)

Draining and Filling Cooling System (Vac N Fill).

3. Disconnect the engine wiring harness electrical connector(s) (1) from the appropriate ECT sensor (s).

4. Remove the appropriate ECT sensor(s) (1).

Installation Procedure

A/C, Cooling System - Auxiliary Heater Coolant Leak|Page 7854 > < A/C, Cooling System - Auxiliary Heater Coolant Leak|Page 7852