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Home >> Chevrolet >> 2009 >> Chevy Express G3500, Van Passenger Extended >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Control System & Fuel System - 6.6L LMM - Introduction) >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
CAUTION: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
  1. Fig 1: Identifying ECT Sensor
    GM1861923Courtesy of GENERAL MOTORS CORP.

    Remove the intake manifold tube. Refer to Intake Manifold Tube Replacement (LMM) .
  2. Drain the coolant to a level below the engine coolant temperature (ECT) sensor. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac N Fill) .
  3. Disconnect the engine wiring harness electrical connector(s) (1) from the appropriate ECT sensor (s).
    4. Fig 2: Identifying ECT Sensor
    GM1861925Courtesy of GENERAL MOTORS CORP.
  4. Remove the appropriate ECT sensor(s) (1).
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