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Home >> Pontiac >> 2008 >> G5 GT, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 2.4L - Introduction (2 Of 2) >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Installation Procedure

Installation Procedure

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.
NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
    Fig 1: View Of ECT Sensor
    GM773501Courtesy of GENERAL MOTORS CORP.
  1. If you are reinstalling the original sensor, or if you are installing a NEW sensor without a sealer, coat the threads with sealant. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    2. NOTE: Refer to Fastener Notice .
  2. Install the ECT sensor.

    Tighten:  Tighten the sensor to 20 N.m (15 lb ft).

    3. Fig 2: Identifying Engine Harness Electrical Connectors
    GM1648166Courtesy of GENERAL MOTORS CORP.
  3. If equipped with RPO M86, connect the engine harness electrical connector (3) to the ECT sensor.
    4. Fig 3: Identifying Engine Harness Electrical Connectors - Top Of Engine
    GM1647986Courtesy of GENERAL MOTORS CORP.
  4. If equipped with RPO MN5, connect the engine harness electrical connector (3) to the ECT sensor.
  5. Fill the cooling system. Refer to Cooling System Draining and Filling (GE 47716 Fill) or Cooling System Draining and Filling (Static Fill LE5, L61) .
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