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Home >> Chevrolet >> 2004 >> Epica LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 2.5L (LBK) - Repair Instructions >> Repair Instructions >> Engine Coolant Temperature (ECT) Sensor Replacement >> Removal Procedure

Removal Procedure

    Fig 1: View Of Pressure Released From Coolant Reservoir
    GM1375162Courtesy of GENERAL MOTORS CORP.
  1. Relieve the pressure in the coolant reservoir by turning the coolant reservoir cap slightly counterclockwise.
    2. CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  2. Disconnect the negative battery.
    3. Fig 2: View Of VIS Vacuum Tank And Retaining Nuts
    GM1375163Courtesy of GENERAL MOTORS CORP.
  3. Remove the variable intake system (VIS) vacuum tank. Refer to Intake Manifold Tuning (IMT) Valve Vacuum Reservoir Replacement .
    4. Fig 3: View Of ECT Sensor Connector
    GM1375165Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the engine coolant temperature (ECT) sensor connector.
  5. Remove the ECT sensor from the cylinder head.
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