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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 501 (Engine Controls/Fuel - Hybrid (LZ1) - Repair Instructions) >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

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

    Fig 1: Locating Engine Wiring Harness Electrical Connector, Clip, Bolt & ECT Sensor
    GM1960215Courtesy of GENERAL MOTORS COMPANY
  1. Drain the cooling system to a level below the engine cooling temperature (ECT) sensor. Refer to Cooling System Draining and Filling (Static Fill) .
  2. Disconnect the engine wiring harness electrical connector (2) from the ECT sensor (1).
    3. Fig 2: View Of ECT Sensor
    GM855737Courtesy of GENERAL MOTORS COMPANY
  3. Remove the ECT sensor.
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