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Home >> Chevrolet >> 2005 >> Silverado 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Controls - 4.3L (Introduction)) >> Repair Instructions >> Engine Coolant Temperature (ECT) Sensor Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of TP Sensor, IAC Motor, ECT Sensor, Control Port Injector Module & Engine Harness Clip Bolt
    GM782174Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system to a level below the sensor. Refer to Draining and Filling Cooling System (w/RPO HP2) or Draining and Filling Cooling System (w/o RPO HP2) in Engine Cooling.
  2. Disconnect the engine coolant temperature (ECT) sensor electrical connector (5).
    3. Fig 2: View Of ECT Sensor
    GM246800Courtesy of GENERAL MOTORS CORP.
    NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
  3. Remove the ECT sensor.
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