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Removal Procedure

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. 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: Identifying Engine Harness Electrical Connectors - Top Of Engine
    GM1647986Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill LE5, L61) or Cooling System Draining and Filling (GE 47716 Fill) .
  2. If equipped with regular production option (RPO) MN5, disconnect the engine harness electrical connector (3) from the engine coolant temperature (ECT) sensor.
    3. Fig 2: Identifying Engine Harness Electrical Connectors
    GM1648166Courtesy of GENERAL MOTORS CORP.
  3. If equipped with RPO M86, disconnect the engine harness electrical connector (3) from the ECT sensor.
    4. Fig 3: View Of ECT Sensor
    GM773501Courtesy of GENERAL MOTORS CORP.
  4. Carefully remove the ECT sensor.
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