GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Jimmy - 4WD 🢒 Engine 🢒 Engine Controls - 4.3L 🢒 Exhaust Gas Recirculation Pipe Replacement

Removal Procedure
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .

    2. Object Number: 486681 Size: SH
  2. Remove the EGR pipe bracket retaining fastener.
  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 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. Install the EGR pipe fitting to the exhaust manifold.

    4. Tighten
    Tighten the EGR pipe fitting to exhaust manifold to 30 N·m (22 lb ft).

  4. Install the EGR pipe fitting to the intake manifold.

    5. Tighten
    Tighten the EGR pipe fitting to intake manifold to 25 N·m (18 lb ft).

  5. Install the EGR pipe bracket retaining fastener.

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

  6. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .