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Home >> GMC >> 2001 >> Sierra 2500 HD, 2D Pickup, 6.6 1, 4WD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.6L - Repair Instructions >> 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: ECT Sensor
    GM740508Courtesy of GENERAL MOTORS COMPANY
  1. Coat the threads with sealer GM P/N 9985253 or equivalent. If part is new and has sealer, do not recoat threads.
  2. Refer to FASTENER NOTICE in Cautions and Notices.

    Install the ECT sensor (1).

    Tighten 

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

    3. Fig 2: ECT Sensor Electrical Connector
    GM740506Courtesy of GENERAL MOTORS COMPANY
  3. Connect the ECT electrical connector (1) to the sensor.
  4. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
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