GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2002 🢒 LeSabre 🢒 Engine 🢒 Engine Exhaust 🢒 Exhaust Gas Recirculation Inlet Pipe Replacement

Removal Procedure

    Object Number: 703604 Size: SH
  1. Remove the exhaust gas recirculation (EGR) valve. Refer to Exhaust Gas Recirculation Valve Replacement .
  2. If applicable remove the secondary air injection (AIR) pump outlet pipe. Refer to Secondary Air Injection Pump Outlet Pipe/Hose Replacement .
  3. Remove the EGR valve outlet pipe. Refer to Exhaust Gas Recirculation Outlet Pipe Replacement .
  4. Remove the EGR valve inlet pipe mounting bolt (2) from the exhaust manifold.

    5. Object Number: 703601 Size: SH
  5. Remove the mounting bolt (2) and the stud (3) from the EGR valve inlet pipe bracket.
  6. Remove the EGR valve inlet pipe assembly (1).

Installation Procedure

    Object Number: 703601 Size: SH
  1. Install the EGR valve inlet pipe assembly (1).

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the mounting bolt (2) and the stud (3) to the EGR valve inlet pipe bracket.

    3. Tighten
    Tighten the bolt and stud to 50 N·m (37 lb ft).


    Object Number: 703604 Size: SH
  3. Install the EGR valve inlet pipe bolt (2) to the exhaust manifold.

    4. Tighten
    Tighten the bolt to 29 N·m (21 lb in).

  4. Install the EGR valve outlet pipe. Refer to Exhaust Gas Recirculation Outlet Pipe Replacement .
  5. If applicable install the secondary air injection (AIR) pump outlet pipe. Refer to Secondary Air Injection Pump Outlet Pipe/Hose Replacement .
  6. Install the EGR valve. Refer to Exhaust Gas Recirculation Valve Replacement .