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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo Extended, 6.6 2 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 6.6L (LLY) - Introduction (2 Of 2) >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Removal Procedure

Removal Procedure

NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
    Fig 1: Identifying Engine Wiring Harness Electrical Connector
    GM1731275Courtesy of GENERAL MOTORS CORP.
  1. Remove the intake manifold tube. Refer to Intake Manifold Tube Replacement (LLY, LBZ) or Intake Manifold Tube Replacement (LMM) .
  2. Drain the coolant to a level below the engine coolant temperature (ECT) sensor. Refer to Draining and Filling Cooling System (Static Fill) or Draining and Filling Cooling System (Vac N Fill) .
  3. Disconnect the engine wiring harness electrical connector (1) from the ECT sensor.
    4. Fig 2: Locating Coolant Temperature Sensor
    GM1409328Courtesy of GENERAL MOTORS CORP.
  4. Remove the ECT sensor (1).
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