DeVille, Eldorado, Seville 1999-2005

Removal & Installation

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  1. Turn OFF the ignition
  2.  
  3. Drain the coolant to below the level of the engine coolant temperature (ECT) sensor.
  4.  
  5. Disconnect the ECT sensor harness connector.
  6.  
  7. Remove the ECT sensor.

    Click image to see an enlarged view

    Fig. Showing position of the Engine Coolant Temperature (ECT) Sensor (1)

  8.  

To install:

  1. Coat the sensor threads with sealer GM P/N 1050805, or equivalent.
  2.  
  3. Install the ECT sensor (1). Tighten the ECT sensor to 20 Nm (15 ft. lbs.).
  4.  
  5. Connect the ECT sensor harness connector.
  6.  
  7. Refill the coolant system.
  8.  

  1. Turn the ignition OFF .
  2.  
  3. Drain the coolant to below the level of the Engine Coolant Temperature (ECT) sensor.
  4.  
  5. Disconnect the ECT sensor.
  6.  
  7. Remove the ECT sensor.

    Click image to see an enlarged view

    Fig. Engine coolant temperature sensor (1).

  8.  

To install:


WARNING
Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.


NOTE
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 sensor threads with sealer GM P/N 1050805, or an equivalent.
  2.  
  3. Install the ECT sensor and tighten to 15 ft. lbs. (20 Nm).
  4.  
  5. Connect the connector to the ECT sensor.
  6.  
  7. Refill the coolant system.
  8.  

 
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