GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2008 🢒 Lucerne 🢒 Engine 🢒 Engine Controls and Fuel - 3.8L 🢒 Exhaust Gas Recirculation Valve Adapter Replacement

Removal Procedure

    Object Number: 1688504 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the exhaust gas recirculation (EGR) valve adapter pipe bolt.
  3. Lower the vehicle.
  4. Remove the EGR valve. Refer to Exhaust Gas Recirculation Valve Replacement .
  5. Remove the EGR valve outlet pipe. Refer to Exhaust Gas Recirculation Outlet Pipe Replacement .

    6. Object Number: 1694090 Size: SH
  6. Remove the EGR valve adapter bolts.
  7. Remove the EGR valve adapter.

Installation Procedure

    Object Number: 1694090 Size: SH
  1. Position the EGR valve adapter to the cylinder head.

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

  2. Install the EGR valve adapter bolts.

    3. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  3. Raise the vehicle.

    4. Object Number: 1688504 Size: SH
  4. Install the EGR valve adapter pipe bolt .

    5. Tighten
    Tighten the bolt to 25 N·m (18 lb in).

  5. Lower the vehicle.
  6. Install the EGR valve outlet pipe. Refer to Exhaust Gas Recirculation Outlet Pipe Replacement .
  7. Install the EGR valve. Refer to Exhaust Gas Recirculation Valve Replacement .