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Home >> Cadillac >> 2005 >> Escalade EXT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.8L, 5.3L & 6.0L - Introduction >> Repair Instructions >> Engine Coolant Temperature (ECT) Sensor Replacement >> Removal Procedure
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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: View Of Engine Wiring Harness Ground Bolt, ECT Sensor Electrical Connector, Negative Battery Cable & Harness Ground (4.8L, 5.3L, and 6.0L Engines)
    GM1235684Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system to a level below the engine cooling temperature (ECT) sensor. Refer to Draining and Filling Cooling System in Engine Cooling.
  2. Disconnect the ECT sensor electrical connector (5).
    3. Fig 2: View Of ECT Sensor
    GM855737Courtesy of GENERAL MOTORS CORP.
  3. Remove the ECT sensor.
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