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Home › Buick › 2011 › Lucerne Super › Repair and Diagnosis › Engine Performance › Engine Control Systems › Engine Controls And Fuel - 4.6L - Repair Instructions › Repair Instructions › Exhaust Gas Recirculation Valve Replacement › Removal Procedure

Removal Procedure

    Fig 1: Locating Engine Harness Electrical Connectors
    GM1662118Courtesy of GENERAL MOTORS COMPANY
  1. Remove the fuel injector sight shield, if necessary. Refer to Fuel Injector Sight Shield Replacement .
  2. Disconnect the engine harness electrical connector (2) from the exhaust gas recirculation (EGR) valve.
    3. Fig 2: Identifying EGR Bracket Shield Nuts
    GM1564178Courtesy of GENERAL MOTORS COMPANY
  3. Remove the EGR bracket shield nuts.
  4. Remove the EGR bracket shield.
    5. Fig 3: View Of EGR Valve Bolts
    GM1564195Courtesy of GENERAL MOTORS COMPANY
  5. Remove the EGR valve bolts.
  6. Remove the EGR valve.
  7. Remove and discard the EGR valve gasket.
    8. NOTE:

    Inspect the EGR passages in the water pump housing for deposits. Clean the EGR passages as needed. Refer to Exhaust Gas Recirculation (EGR) System Cleaning .

  8. Clean the EGR valve mounting surface.
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