GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2002 🢒 Express 🢒 Engine 🢒 Engine Controls - 4.3L 🢒 Exhaust Gas Recirculation Pipe Replacement

Removal Procedure

    Object Number: 486681 Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  2. Remove the retaining fastener from the EGR pipe bracket .
  3. Loosen the pipe fittings at both ends of the EGR pipe.
  4. Remove the EGR pipe.

Installation Procedure

    Object Number: 486681 Size: SH
  1. Install the EGR pipe in the proper location and start the pipe fittings by hand. Do not fully tighten at this step.
  2. Ensure that the EGR pipe fittings are correctly lined up on the adaptors to the exhaust and the intake manifolds.

    3. 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.

  3. Tighten the EGR pipe fittings to the intake manifold and the exhaust manifold.

    4. Tighten

        • Tighten the fitting to the intake manifold to 25 N·m  (18 lb ft).
        • Tighten the fitting to the exhaust manifold to 30 N·m (22 lb ft).
  4. Install the retaining fastener to the EGR pipe bracket .

    5. Tighten
    Tighten the fastener to 25 N·m (18 lb ft).

  5. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.