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Home >> Cadillac >> 2009 >> STS V >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 4.4L - Introduction >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Installation Procedure
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Installation Procedure

CAUTION: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
CAUTION: 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.
    Fig 1: View Of ECT Sensor
    GM1247897Courtesy of GENERAL MOTORS CORP.
  1. Coat the sensor threads with sealer GM P/N 1050805, or equivalent.
    2. CAUTION: Refer to Fastener Caution .
  2. Install the ECT sensor and tighten to 20 N.m (15 lb ft).
    3. Fig 2: View Of ECT Sensor Harness Connector
    GM887908Courtesy of GENERAL MOTORS CORP.
  3. Connect the ECT sensor harness connector.
  4. Install the rear supercharger inlet duct assembly. Refer to Supercharger Inlet Duct Assembly Replacement .
  5. Refill the coolant system. Refer to Cooling System Draining and Filling (GE 47716) or Cooling System Draining and Filling (Static Fill) .
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