GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2006 🢒 Lucerne 🢒 Engine 🢒 Engine Controls - 4.6L 🢒 Exhaust Gas Recirculation Valve Replacement

Removal Procedure

    Object Number: 1662118 Size: SH
  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. Object Number: 1564178 Size: SH
  3. Remove the EGR bracket shield nuts.
  4. Remove the EGR bracket shield.

    5. Object Number: 1564195 Size: SH
  5. Remove the EGR valve bolts.
  6. Remove the EGR valve.
  7. Remove and discard the EGR valve gasket.

    8. Important: 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.

Installation Procedure

    Object Number: 1564195 Size: SH
  1. Install a NEW EGR gasket.
  2. Install the EGR valve.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the EGR valve bolts.

    4. Tighten
    Tighten the bolts to 24 N·m (18 lb ft).


    Object Number: 1564178 Size: SH
  4. Install the EGR bracket shield.
  5. Install the EGR bracket shield nuts.

    6. Tighten
    Tighten the nuts to 10 N·m (89 lb in).


    Object Number: 1662118 Size: SH
  6. Connect the engine harness electrical connector (2) to the EGR valve.
  7. Install the fuel injector sight shield, if necessary. Refer to Fuel Injector Sight Shield Replacement .