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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 357 (Engine Controls And Fuel - Hybrid (LZ1) - Repair Instructions) >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
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.

CAUTION:

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

    Fig 1: Engine Coolant (ECT) Sensor
    GM855737Courtesy of GENERAL MOTORS CORP.
  1. If installing the old sensor, coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent.
  2. CAUTION:

    Refer to Fastener Caution .

  3. Install the ECT sensor.

    Tighten 

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

  4. Fig 2: Engine Wiring Harness Electrical Connector, Clip, Bolt And ECT Sensor
    GM1960215Courtesy of GENERAL MOTORS CORP.
  5. Connect the engine wiring harness electrical connector (2) to the ECT sensor (1).
  6. Refill the cooling. Refer to Cooling System Draining and Filling (Static Fill) .