GM Service Manual Online
For 1990-2009 cars only

Exhaust Pipe Replacement - Right Side 6.6L Engine

Removal Procedure


    Object Number: 784226  Size: SH
  1. Remove the turbocharger exhaust pipe. Refer to Turbocharger Exhaust Pipe Replacement .
  2. The turbocharger exhaust pipe does not need to be removed from the vehicle in order to access the right exhaust pipe. Position the turbocharger exhaust pipe out of the way.

  3. Remove the exhaust gas recirculation (EGR) cooler tube nuts, from the studs (1).

  4. Object Number: 777476  Size: SH
  5. Remove the exhaust pipe to the exhaust manifold bolts (1).
  6. Remove the exhaust pipe to the turbocharger bolts (2).
  7. Remove the right exhaust pipe and gaskets.
  8. Clean the exhaust pipe.
  9. Clean the exhaust pipe mating surfaces.
  10. Inspect the exhaust pipe for dents and cracks.
  11. Replace the exhaust pipe if any damage is found.

Installation Procedure


    Object Number: 777476  Size: SH
  1. Install the right exhaust pipe with a NEW gasket to the turbocharger. Align the tab on the gasket to face inward.
  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.

  3. Install the exhaust pipe to turbocharger bolts (2).
  4. Tighten
    Tighten the bolts to 53 N·m (39 lb ft).

  5. Install the exhaust pipe to the exhaust manifold with a NEW gasket. Align the tab on the gasket to face outward.
  6. Install the exhaust pipe to exhaust manifold bolts (1).
  7. Tighten
    Tighten the bolts to 53 N·m (39 lb ft).


    Object Number: 784226  Size: SH
  8. Install the EGR cooler tube nuts, to the studs (1).
  9. Tighten
    Tighten the nuts to 30 N·m (22 lb ft).

  10. Install the turbocharger exhaust pipe outlet. Refer to Turbocharger Exhaust Pipe Replacement .