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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1306 (Engine Controls And Fuel - 6.6L - Introduction (1 Of 2)) >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. 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: View Of Engine Wiring Harness Electrical Connector
    GM1870783Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system to a level below the engine coolant temperature (ECT) sensors. Refer to Cooling System Draining and Filling (Vac-N-Fill) or Cooling System Draining and Filling (Static Fill) .
  2. Disconnect the engine wiring harness electrical connector (1) from the appropriate ECT sensor.
    3. Fig 2: View Of Engine Coolant Temperature Sensors
    GM1870784Courtesy of GENERAL MOTORS CORP.
  3. Remove the appropriate ECT sensor (1).
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