Grand Prix V6-3.8L (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. Partially drain the cooling system. Refer to Draining and Filling Cooling System (L26, L32 GE 47716 Fill) Draining and Filling Cooling System
(L26, L32 Static Fill) Draining and Filling Cooling System (LS4 GE 47716 Fill) Draining and Filling Cooling System (LS4 Static Fill) in Engine
Cooling.
2. Disconnect the ECT sensor electrical connector.
3. Remove the ECT sensor.
Installation Procedure
Notice: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
Notice: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking
compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these
coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect
the operation of the component. Use the correct torque specification when installing components in order to avoid damage.
1. Coat the threads with sealer GM P/N 12346004 (Canadian P/N 10953480) or equivalent.
Notice: Refer to Fastener Notice in Service Precautions.
2. Install the ECT sensor.
Tighten the ECT sensor to 25 N.m (18 lb ft).
